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Find cheap flights to Ontario from $44

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Ontario departing on 5/16. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
lun. 5/27
lun. 6/3

Search hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Ontario
These are the airlines KAYAK users have selected most often from within our search results for flights to Ontario
In the last 7 days travelers have searched 44,335,567 times on KAYAK, and here is why:

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Cheap flight deals to Ontario

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
10:10 am - 11:39 amSFO-ONT
1h 29mnonstop
7:58 am - 9:25 amONT-SFO
1h 27mnonstop
$48Frontier
Find Deal
mar., mai 7 - mer., mai 15
4:17 pm - 5:04 pmSLC-ONT
1h 47mnonstop
6:10 pm - 8:54 pmONT-SLC
1h 44mnonstop
$48Frontier
Find Deal
mer., mai 15 - mer., mai 22
11:25 am - 12:13 pmSLC-ONT
1h 48mnonstop
5:20 pm - 8:08 pmONT-SLC
1h 48mnonstop
$139Delta
Find Deal
mar., mai 14 - mer., mai 22
8:55 pm - 10:27 pmSFO-ONT
1h 32mnonstop
6:20 am - 7:45 amONT-SFO
1h 25mnonstop
$179United Airlines
Find Deal
sam., juin 1 - lun., juin 3
6:00 pm - 9:39 pmDEN-ONT
4h 39m1 stop
5:20 pm - 11:14 pmONT-DEN
4h 54m1 stop
$196Delta
Find Deal
sam., juin 1 - mer., juin 5
1:25 pm - 7:14 pmPDX-ONT
5h 49m1 stop
6:00 am - 10:29 amONT-PDX
4h 29m1 stop
$196Alaska Airlines
Find Deal
mar., mai 21 - jeu., mai 23
6:30 am - 9:05 amSEA-ONT
2h 35mnonstop
8:20 pm - 10:55 pmONT-SEA
2h 35mnonstop
$197Alaska Airlines
Find Deal
mar., juil. 9 - mar., juil. 9
9:30 pm - 11:04 pmSFO-ONT
1h 34mnonstop
6:00 am - 7:28 amONT-SFO
1h 28mnonstop
$215United Airlines
Find Deal
sam., mai 18 - lun., mai 20
6:53 pm - 10:29 pmDEN-ONT
4h 36m1 stop
12:53 pm - 10:05 pmONT-DEN
8h 12m1 stop
$228American Airlines
Find Deal
mer., mai 29 - ven., mai 31
5:45 am - 8:45 amSLC-ONT
4h 00m1 stop
9:30 am - 3:10 pmONT-SLC
4h 40m1 stop
$242American Airlines
Find Deal
jeu., mai 23 - dim., mai 26

Flights to Ontario - Travel Insights & Trends

Get data-powered insights and trends for flights to Ontario to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest flight to Ontario?

These are the best prices found by users searching on KAYAK in the last 72 hours.
If traveling to Ontario, the cheapest city to fly from in the last 3 days was Seattle, with flights as low as $44 one-way and $48 round-trip. Flights from San Francisco are the most searched and start at $48 for a return trip.

How much is a flight to Ontario?

The average and cheapest price for all flights to Ontario from each origin found by users searching on KAYAK in the last month.
On average, a flight to Ontario costs $130. The cheapest price found on KAYAK in the last 2 weeks cost $18 and departed from Phoenix Sky Harbor Intl Airport. The most popular routes on KAYAK are San Francisco to Ontario which costs $104 on average, and Portland to Ontario, which costs $112 on average.
See prices from:

What is the cheapest day to fly to Ontario?

The average price of all flights to Ontario clicked on KAYAK for each day over the last 12 months.
Based on KAYAK data, the cheapest day to fly to Ontario is Friday where tickets can be as cheap as $251. On the other hand, the most expensive day to fly is Sunday, where prices are $321 on average.

What is the cheapest month to fly to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to Ontario, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights to Ontario is January, where tickets cost $288 on average for one-way flights. On the other hand, the most expensive months are June and April, where the average cost of tickets from the United States is $633 and $630 respectively. For return trips, the best month to travel is September with an average price of $278.

What is the cheapest time of day to fly to Ontario?

The average price for all flights to Ontario depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
The cheapest time of day to fly to Ontario is generally in the afternoon, when flights cost $297 on average. The most expensive time of day to fly to Ontario is generally in the evening, which is peak travel time and where the average cost of a ticket is $386.

What is a good deal for flights to Ontario?

If you’re looking for cheap airfare to Ontario, 25% of our users found tickets to Ontario for the following prices or less: From Phoenix Sky Harbor Intl Airport $39 one-way - $58 round-trip, from Portland $39 one-way - $68 round-trip, from Salt Lake City $44 one-way - $48 round-trip.

How far in advance should I book a flight to Ontario?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights to Ontario, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 28 days before departure.

Which airlines fly to Ontario?

Southwest, Frontier, and American Airlines are commonly used to fly to Ontario from United States. See the amount of flights per week for popular airlines flying to Ontario.

Which airline offers the most flights to Ontario?

Of the 8 airlines that fly to Ontario, Southwest offers the most flights, with around 216 per week, followed by Frontier with 120 flights per week.

How long is the flight to Ontario?

The duration of your flight to Ontario depends on your departure and arrival airports. Obviously any flights that include a layover will also be longer. The most popular routes to Ontario on KAYAK are from San Francisco, which takes 1h 25m, Miami, which takes 5h 28m, New York, which takes 5h 45m, and Newark, which takes 5h 59m.

How many direct flights to Ontario are there each day?

There are around 99 direct flights from within United States to Ontario every day. Most flights depart in the morning, with 10:00 am the most common departure time and 45% of flights departing in the morning.

How many direct flights to Ontario are there each week?

Each week there are around 693 direct flights from within United States to Ontario. The most common day for departures is Sunday, with 16% of flights taking off on this day.

How many long-haul flights are there to Ontario each week?

Each week, there are 64 medium-haul flights (3-6 hour flight duration) and 525 short-haul flights (up to 3 hour flight duration) to Ontario. There aren't any long-haul flights (6-12 hour flight duration).

How many cities have direct flights to Ontario?

From the United States, there are direct flights to Ontario from 15 cities. The city with the most direct flights is Phoenix Sky Harbor Intl Airport, with 89 direct flights each week.

Good to know

Low season

January

High season

December

Cheapest flight

$44
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly with an average 24% increase in price.
Flight from Seattle to Ontario

When to book flights to Ontario

Are your dates flexible? Find out the best times to travel to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. The information is for flights to Ontario based on your location. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs - booking Ontario flights

  • Can I take a rideshare from the Ontario International Airport (ONT) to my final destination?

    Yes, you can order an app-based rideshare once you land and have claimed your baggage. After baggage claim, follow the signs for “Ride-Share Pickup Location” and these are located near the east end of each passenger terminal.

  • Does the Ontario International Airport (ONT) have services for travelers with limited mobility?

    Yes, ONT offers several services for passengers with reduced mobility. These include wheelchair rental and assistance navigating the airport after landing, as well as services for deaf and visually impaired travelers. Contact your airline in advance if you will need to utilize any of these services.

  • Can I fly directly to the Ontario International Airport (ONT) from any other major US hubs?

    Yes, you will find plenty of direct flights to Ontario from major US cities. For example, United Airlines and Frontier Airlines both operate direct flights from Denver (DEN) to Ontario. You will also find direct flights on board JetBlue from New York City’s JFK airport. Alaska Airlines also offers a direct flight from Seattle to Ontario.

  • What other cities are served by the Ontario International Airport (ONT)?

    The ONT airport mostly serves the city of Ontario, but there are many cities and attractions nearby that it serves, as well. These include Riverside and San Bernardino, as well as the San Bernardino National Forest. It is also quite close to Anaheim, Los Angeles, and Pasadena, California.

  • Are there good restaurants in Ontario International Airport?

    Passengers with flights to Ontario have several options when it comes to where to eat. Look for Schlotzsky’s Deli, El Paseo Cafe and Bar, and Route 66. You will find the restaurants and vending machines in Terminals 2 and 4.

  • Are there good malls or shopping places close to Ontario International Airport?

    Ontario Mills is the largest shopping mall and outlet mall in the Ontario area. Look for a variety of shops at Ontario Mills including Bath & Body Works, North Face, Coach, Polo, and Saks. Or, stop by the movie theater and enjoy a movie in between flights.

  • What kind of services does Ontario International Airport offer?

    At the airport, you can find shopping and dining options, free WiFi for up to 4 hours, cell phone parking lots, an inter-terminal shuttle, and a military lounge. Baggage carts are located for your use throughout the airport.

  • Do hotels in Ontario offer free shuttle service from Ontario International Airport?

    If you are looking for free shuttle service from the airport to a local hotel, you have two choices. Both Azure Hotel and Suites and Red Roof Inn Ontario offer free shuttle service to guests. They are both located approximately 5 minutes from the airport.

  • What is the best way to get from Ontario International Airport to Salt Oasis?

    Salt Oasis is located 6.1 miles from Ontario International Airport. The trip will take approximately 10 minutes by taxi by I-15N. Once you arrive, you can enjoy a salt bath and the salt caves. This is a relaxing way to spend time between flights or a way to de-stress before heading on to your final destination.

  • What is the cheapest flight to Ontario?

    If traveling to Ontario, the cheapest city to fly from in the last 3 days was Seattle, with flights as low as $44 one-way and $48 round-trip. Flights from San Francisco are the most searched and start at $48 for a return trip.

  • How far is Ontario from central Ontario?

    Central Ontario is 3 miles away from Ontario.

  • What is the name of Ontario’s airport?

    There is only 1 airport in Ontario, called Ontario (ONT). It can also be referred to as Ontario or Ontario Intl.

  • How much is a flight to Ontario?

    On average, a flight to Ontario costs $130. The cheapest price found on KAYAK in the last 2 weeks cost $18 and departed from Phoenix Sky Harbor Intl Airport.

  • How does KAYAK find such low prices on flights to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Ontario

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Ontario flight deals.
  • If you are picking up a rental car when you land at the Ontario International Airport (ONT), you will need to take the free shuttle bus to the offsite rental car center. You can find the shuttle bus pickup points in front of terminals 2 and 4 at the Terminal Islands.
  • If you are flying into ONT with a pet, you will be happy to find several pet relief areas both inside and outside the terminal buildings. You will find them at terminal 2 gate 210 and terminal 4 gate 410. Otherwise, they are at the far end of each terminal building.
  • If you need to relax after your flight to Ontario, you can take advantage of the Aspire Lounge, which is open to all travelers flying into and departing from the ONT airport. You will find these in terminal 2 at gate 210 and in terminal 4 at gate 410.
  • Landed at the Ontario International Airport (ONT) and not sure where to go next? Visit one of the Travelers Aid desks. The desks are located both in terminal 2 and terminal 4 and are staffed by volunteers committed to helping you get the most out of your trip to Ontario.
  • Have you arrived at the Ontario International Airport (ONT) but your luggage has not? Head to the baggage claim counters in the arrivals area to report the incident to the representatives on duty. They will be able to track your luggage and arrange a delivery to your accommodation address once your luggage arrives in Ontario for your convenience. Just be sure to report it before you leave the airport.
  • Passengers that book flights to Ontario will want to take advantage of the free shuttle provided by the airport. The Ontario Courtesy Shuttle will take passengers between the terminals, parking lot 5, and the Consolidated Rental Car Facility. Shuttle services operate 24 hours a day.
  • Those that are in the military will want to stop by the USO Lounge. Access to the lounge is free to all active military and their families. In the lounge, you can find a TV, snacks, computers, a child care area, and a library. It is open from 6 a.m. to 10 p.m. and can be found in the West Wing for passengers who want somewhere quiet to wait between flights.
  • If you’re picking up or dropping people off at Ontario International Airport, check out the free cell phone lots. You can park there for free while you drop off or wait for your passengers. This area is designed to prevent people from circling the airport endlessly. You can park for free for one hour. No overnight parking allowed.
  • It’s easy to get to and from Ontario International Airport using a variety of transportation options. Look for the car rental services in ConRac which can be reached using the free shuttle service. Or, look for the shuttle, bus, taxi, or train services near the baggage claim area.
  • If you’re looking for business services while you’re at Ontario International Airport, you’ll want to visit the airport hotel located 6 minutes away. The Ontario Airport Holiday Inn offers fully equipped meeting rooms as well as printing, copying, scanning and office supplies.
See more tips

Prefer to fly non-stop to Ontario?

Find which airlines fly direct to Ontario, which days they fly and book direct flights.

Nonstop departures

United States to Ontario

Monday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Tuesday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Wednesday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Thursday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Friday

Aeromexico, Air Canada, Air France, +21 more

Aeromexico, Air Canada, +22 more

Saturday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Sunday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

See more direct flights

Nonstop returns

Ontario to United States

Monday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Tuesday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Wednesday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Thursday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Friday

Aeromexico, Air Canada, Air France, +21 more

Aeromexico, Air Canada, +22 more

Saturday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Sunday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

See more direct flights
See more direct flights

Top 5 airlines flying to Ontario

 
See real verified KAYAK customer reviews for airlines flying to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from the United States to Ontario. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 9115 reviews
7.3food
8.6crew
8.2boarding
7.3entertainment
7.9comfort
Airline reviews

Pleasant flight, now wifi, but did get pushed to the exit row gracefully cause I am a tall man. Was a pleasant thank you.

8.0 ExcellentCountry, Apr 2024PAE - LAX
Read more about Alaska Airlines reviews

Pleasant flight, now wifi, but did get pushed to the exit row gracefully cause I am a tall man. Was a pleasant thank you.

Long flights are best when the seats have movies and shows to watch.

Good - San Jose security is a breeze. Exact opposite of San Diego. Flight on time. Bad - FA's were not that cheery or polite. I thought we may blow out a tire as the pilot slammed down a hard landing in perfect conditions. He came in pretty hot like he had a date waiting.

I was seated at the back of the plane and the flight attendants were fantastic. I did not get food so can’t say. Thought the movie selection was lean.

It was so easy to board using my boarding pass on my iPhone, and I liked what I was given on the plane for food and drink, and everyone was very friendly.

The messaging about the change in flight destination and options for getting to SFO was poor. There should have been frequent updates. When I spoke to the boarding agent moment before we were supposed to board, he was flippant and offered no help before the announcement was made that transportation would be arranged. It was as poor of an experience that I've ever had.

My plane ride down landed 20 min late. Boarding at SFO was strange too. The people at the terminal were nice—but, boarding lacked direction, and was confusing . Coming back was worse—the plane was hours behind—and I barely caught the last Bart train back to San Francisco (3 min more and I would have been in trouble). It was a very stressful trip, and it didn’t need to be.

The absolute coldest flight I’ve ever been on, even with a sweater and zip up sweatshirt. Was miserable the entire flight.

the departure got delayed due to SJC situation, but it was a quite good waiting thanks to Alaska airline teams.

The flight attendant in the back of the plane was barely understood as she rushed through instructions to the point of being intelligible. She had a bored demeanor in her delivery.

There was a loud squeaky sound the whole time we were flying.

Had a broken tray in business class. Crew just shrugged it off.

I didn’t like that I could not select my seat and was assigned a seat when I checked in at LAX

Great experience overall. Check in at Austin was congested as they only have about 6 check in kiosks, one was broken, and there was a lot of Spring Break travelers.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Everything was very good other than I had selected a specific seat when I booked the flight and they changed it once I checked-in the day before my flight. I was still in first class but lost my aisle seat for a window seat. Being tall, the aisle offers more comfort so I always select an aisle seat.

Flight diverted in SD. Later take off in Seattle by 1.3hrs

Crew was not friendly when I went to request a seat change.

Really impressive staff at airport and on plane, especially given how busy it was

Was a great smooth flight from Detroit to San Diego.

So so. Terrible aircraft choice for that leg of the flight.

delay several times and wait extra long to board. no entertainment service because there are problem for some rows. always encounter some delays for the last flight of the day.

On time every leg of the journey and exceptional staff at counter, gate, and on board. I haven’t travelled in US for a long time and was genuinely surprised how pleasant this was.

This was a Lufthansa flight. Disappointing main meal. Very rough over Canada and arrival at FRA. IFE was almost unusable.

Too many fees (but that seems to apply to all airlines nowadays)

For a 22 minute flight all you expect is for it to be safe and comfortable

I was not able to buy food in the flight. They refer to include your Credit card in the APP, and if you are not from USA (i have a credit card form Canada) it is not possible

Over two hours wait to get wheelchair assistance from arrival to the departure gate for LA was unreasonable even though there appreared to be heavy demand.

Airline did not explain reasons why flight was delayed two hours. Explanations were badly needed and rarely provided. Problem seemed to clearly be the airline’s fault and not the fault of the weather or airport.

I was delighted that we were able to get on the 4:40 pm flight rather than our original booking at 6:55 pm!! Other than that, the flight was comfortable and landed early😊

Fight crew was not very attentive and the bastions were gross!

Our flight was great we left Kona earlier and got into LAX almost an 1hour earlier as well. LAX AA is in repair so to get out and found our bus to get pick up was a bit confusing.

Plane was good but was delayed. probably not AA fault but caused a 1 hour delay. Seating was cramped.

5 hour flight - full flight - not enough room to use my computer - slightly delayed - Admirals club was excellent quality food, drink made up for flight seating. No food offerred on flight, you ahd to prebook.

We experience delays on departure and connecting flights resulting in 14 hour to our next departure. We were accommodated with a night's stay but was only provided a 12 dollar meals accommodation. The airlines rules state.at least 50 dollars. In any case, it can not make up for the whole day missed on our vacation in Sydney Australia.

I can say I will not be taking this airline again any time soon. Seat were uncomfortable and too tight. Lack of chair screen and little overhead space.

Plane felt so crowded and tightly packed. The chair itself was not comfortable.

They attended to my needs as I couldn't walk and they provided a wheelchair for me.q

Poor availability of food. Cold cabin temperature. Extremely long waiting time for a flight attendant to respond to a call button signal.

2.5h delay due to unruly passenger in first class. Had to be removed from the flight. No food unless pre ordered. Didn't know we would need it because of delay.

I purchased a carry on bag online…was supposed to cost $72 but after a whole slew of bs charges, the total was over $175.00. Because of these hidden charges, I will not even consider flying Frontier ever again. It’s just not worth the hassle. I’m scratching this company off my list forever.

Flight was OK. Seats were good no cell phone charges on the plane no TVs or entertainment.

There were 3 leg for the trip and each leg was delayed by 90 minutes or more. The boarding process takes forever with people waiting on the jetway even though most folks do not have carry-on. The whole process is poorly managed.

Flight cancelled and was told by a rude gate agent that they don’t accommodate on other airlines. Had to wait 5 hours for a connecting flight that had a 7 hour layover. Would not allow bags to be checked early so we couldn’t go through security .Had to rent a car for the afternoon to store bags and get a meal. Also incurred a hotel fee. No apology or reason given for the cancellation- just rudeness.

They cancelled the flight then did nothing to help us rebook. It was awful - I won’t fly with them again

The process of buying the ticket and navigating all the hidden charges that Frontier throws at you was a terrible experience. The actual airport experience and flying was fine.

The truck that was refueling the plane drove away with the hose still connected to the plane and ripped part of the plane off with it

Not have to pay for every single item to take a flight. Seating and delays sucked.

Flight was cancelled and I had to spend the night in the airport lugging my suitcase around

If you don’t check in 24 hours in advance, they will charge you $110 to check your bag instead of the $30. I did not get an email with this information and did not check in. In addition, my flight home was cancelled at layover and I had to spend the night in the airport, and then have another layover at another airport before making it home. Will not fly frontier again.

Book Cheap Ontario Plane Tickets

Recent round-trip flight deals

 
These are the cheapest round-trip flights to Ontario found on KAYAK in the last 72 hours.
5/7mar.
nonstopFrontier
1h 29mSFO-ONT
5/15mer.
nonstopFrontier
1h 27mONT-SFO
$48
5/15mer.
nonstopFrontier
1h 47mSLC-ONT
5/22mer.
nonstopFrontier
1h 44mONT-SLC
$48
5/14mar.
nonstopDelta
1h 48mSLC-ONT
5/22mer.
nonstopDelta
1h 48mONT-SLC
$139
6/1sam.
nonstopUnited Airlines
1h 32mSFO-ONT
6/3lun.
nonstopUnited Airlines
1h 25mONT-SFO
$179
6/1sam.
1 stopDelta
4h 39mDEN-ONT
6/5mer.
1 stopDelta
4h 54mONT-DEN
$196
5/21mar.
1 stopAlaska Airlines
5h 49mPDX-ONT
5/23jeu.
1 stopAlaska Airlines
4h 29mONT-PDX
$196
7/9mar.
nonstopAlaska Airlines
2h 35mSEA-ONT
7/9mar.
nonstopAlaska Airlines
2h 35mONT-SEA
$197
5/18sam.
nonstopUnited Airlines
1h 34mSFO-ONT
5/20lun.
nonstopUnited Airlines
1h 28mONT-SFO
$215
5/29mer.
1 stopAmerican Airlines
4h 36mDEN-ONT
5/31ven.
1 stopAmerican Airlines
8h 12mONT-DEN
$228
5/23jeu.
1 stopAmerican Airlines
4h 00mSLC-ONT
5/26dim.
1 stopAmerican Airlines
4h 40mONT-SLC
$242

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Recent one-way flight deals

 
Only flying one-way? Below are some of the best deals for one-way flights to Ontario found on KAYAK in the last 72 hours.
5/16jeu.
nonstopFrontier
2h 44mSEA-ONT
$44
5/5dim.
nonstopFrontier
1h 29mSFO-ONT
$44
5/28mar.
1 stopUnited Airlines
6h 15mSEA-ONT
$88
5/29mer.
1 stopDelta
6h 33mDEN-ONT
$98
5/28mar.
1 stopAlaska Airlines
5h 51mPDX-ONT
$98
5/30jeu.
1 stopAmerican Airlines
5h 52mSFO-ONT
$104
5/25sam.
1 stopDelta
5h 17mDFW-ONT
$108
6/2dim.
nonstopAlaska Airlines
2h 33mSEA-ONT
$108
9/13ven.
1 stopAmerican Airlines
3h 59mSLC-ONT
$109
5/29mer.
1 stopUnited Airlines
6h 59mSEA-ONT
$123

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Search by price

Last minute flights to Ontario

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights to Ontario that are departing in the next 10 days.
5/1mer.
nonstopFrontier
1h 29mSFO-ONT
5/8mer.
nonstopFrontier
1h 27mONT-SFO
$89
4/27sam.
nonstopFrontier
1h 30mSFO-ONT
5/4sam.
nonstopFrontier
1h 28mONT-SFO
$90
5/2jeu.
nonstopDelta
1h 49mSLC-ONT
5/4sam.
nonstopDelta
1h 44mONT-SLC
$264
4/27sam.
multi-stopAmerican Airlines
8h 52mJFK-ONT
5/6lun.
multi-stopAmerican Airlines
8h 31mONT-JFK
$273
4/30mar.
multi-stopAmerican Airlines
8h 38mLGA-ONT
5/7mar.
multi-stopAmerican Airlines
8h 58mONT-LGA
$276
5/1mer.
multi-stopDelta
8h 32mJFK-ONT
5/4sam.
multi-stopDelta
8h 05mONT-JFK
$276
4/27sam.
nonstopUnited Airlines
1h 34mSFO-ONT
4/28dim.
nonstopUnited Airlines
1h 29mONT-SFO
$369
4/30mar.
multi-stopAlaska Airlines
11h 36mJFK-ONT
5/6lun.
multi-stopAlaska Airlines
9h 00mONT-JFK
$370
4/28dim.
multi-stopUnited Airlines
7h 09mPDX-ONT
4/29lun.
multi-stopUnited Airlines
4h 02mONT-PDX
$371
4/29lun.
multi-stopAlaska Airlines
9h 00mORD-ONT
5/2jeu.
multi-stopAlaska Airlines
8h 25mONT-ORD
$388

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Flights to Ontario

Destination:

Ontario (ONT)United States

Return flight deals:

Ontario - United States

Cabin classes:

$343
$478
$193
$29

Browse origins:

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