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Find deals on flights from Ontario from $55

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Anywhere departing on 6/25. 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
Fri 6/28
Fri 7/5

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Where can I fly from Ontario?

Prices from ONT, departing Fri 6/28 and returning Fri 7/5

Flights from Ontario - Travel Insights & Trends

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

Which are the most popular places to fly to from Ontario?

The domestic destinations KAYAK users have most searched for when searching for flights from Ontario.
Based on KAYAK flight searches, the most popular place to fly from Ontario is New York (15% of total searches). The next most popular destinations are Seattle/Tacoma Intl (10%) and Dallas (6%).

What are the most popular international flights out of Ontario?

The international destinations KAYAK users have most searched for when searching for flights from Ontario.
There are many international destinations you can fly to from Ontario. The most popular international destinations among KAYAK users are Manila, London and Paris.

What are the most popular countries to fly to from Ontario?

The most popular countries KAYAK users have searched for from Ontario along with the average price for the route clicked by KAYAK users in the last 2 weeks.
Based on KAYAK flight searches, the most countries to fly to from Ontario is United States (89% of total searches). The next most popular destinations are Taiwan (6%) and El Salvador (3%).

Which cities can I fly to direct from Ontario?

There are loads of places you can fly direct to from Ontario. The most popular destinations for direct flights among KAYAK users are Phoenix, Portland, Honolulu, El Paso and Salt Lake City. On average, the cheapest of these destinations on KAYAK over the last 2 weeks for a return flight was El Paso at $70, while the most expensive was Honolulu, at $221.

Which international cities can I fly to direct from Ontario?

There are many international destinations you can fly to non-stop from Ontario. The most popular international destinations from KAYAK users are Taipei City, Guadalajara and San Salvador. On average, the cheapest of these destinations on KAYAK over the last 2 weeks for a return flight was San Salvador at $199, while the most expensive was Taipei City, at $733.

What is the longest direct flight from Ontario?

The longest direct flight you can take from Ontario is to Taipei City Taiwan Taoyuan Intl Airport, with a duration of 14h 05m. The next longest is Honolulu at 6h 00m, followed by a flight to New York at 5h 20m.

Good to know

Low season

February

High season

May

Cheapest flight

$55
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly with an average 5% increase in price.
Flight from Ontario to Portland

FAQs for booking flights out of Ontario

  • Do flights from Ontario via Ontario International Airport (ONT) consider persons with reduced mobility?

    Special needs passengers, such as those with restricted mobility or impaired vision, will find it easier to fly from Ontario via ONT. To assist these passengers, all airlines have workers stationed throughout the airport. Anyone who requires special airport services should make their request while making their travel arrangements.

  • Can I park my car at Ontario International Airport?

    Different types of parking indicate the probability of parking your car at the airport. If you've arrived at the airport and have a to-and-fro flight from Ontario, consider parking your car at private, public, or valet parking lots with a surcharge both for short and long parking.

  • Are there nursing rooms at Ontario International Airport?

    Lactating mothers are much considered on flights from Ontario via ONT, for it features two nursing rooms for them. One of these nursing rooms is situated in Terminal 2 on the second floor past the TSA screening across from gate 204, next to the women's restroom. The other one is at Terminal 4 on the second floor across from gate 407, next to the family restroom.

  • Which airlines have lounges at Ontario International Airport in Ontario?

    Consider using the Aspire Lounge in Terminal 2, open to guests traveling with United, Alaska, Frontier, and Delta airlines. The lounge provides unparalleled airfield views, excellent food, and comfortable seating to work or relax.

  • What is Ontario also known as?

    Ontario Airport’s airport code is ONT. It can also be referred to as Ontario, Ontario Intl.

  • How does KAYAK find such low prices on flights from 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 from Ontario.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from 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 from 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 your destination with an airline and back to Ontario with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from 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 from 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 a cheap flight out of Ontario

  • Looking for a cheap flight? 25% of our users found tickets from Ontario to the following destinations at these prices or less: Denver $90 one-way - $159 round-trip; Dallas $154 one-way - $325 round-trip; Las Vegas $26 one-way - $52 round-trip
  • Morning departure is around 20% cheaper than an evening flight, on average*.
  • Flights from Ontario depart from Ontario International Airport (ONT). Most passengers use Ontario International Airport from Ontario to Mexico and Las Vegas.
  • It would take you approximately 5 minutes to cover the 3 miles connecting the Ontario city center to Ontario International Airport. If you are in a hurry, consider using a private means of transport such as a taxi, Uber, or car rental. A bus or a train is an alternative means of transport if you are not in a hurry to catch your flight.
  • Travelers with the earliest flight from the airport should consider staying in one of the hotels close to it. For instance, you can book a room at Holiday Inn Ontario Airport. This hotel is a 3-minute walk to ONT and provides a complimentary airport shuttle to its guests who are connecting to the airport for a flight and have pieces of luggage.
  • Never leave your pet behind if you have a flight from Ontario through Ontario International Airport. The airport considers animals by building several pet relief areas inside and outside. These areas are close to gates 210 in Terminal 2 and 410 in Terminal 4. The outside pet relief area is located at the end of the terminal building.
  • Everyone understands how stressful it is to travel with children on long vacations. JetBlue Airlines is a good option if you are flying with children from Ontario. This airline provides kid-friendly amenities such as video games, subscribed cartoon channels, plane toys, and free refreshments to keep kids entertained during the flight. This airline's planes boast big, pleasant seats with ample legroom, making it ideal for parents with children on their laps.
See more tips
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from Ontario to Anywhere

 
Need help choosing which airline to fly with from Ontario to Anywhere? 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.
8.2
China AirlinesOverall score based on 897 reviews
8.0Entertainment
8.0Comfort
8.3Boarding
8.6Crew
7.8Food
Airline reviews

Very good , the weather was terrible, but i admired the professionality and politeness and care from the crew, and the excellent contition of the plane

10.0 Excellentfr Jonah, Apr 2024HKG - TPE
Read more about China Airlines reviews

Very good , the weather was terrible, but i admired the professionality and politeness and care from the crew, and the excellent contition of the plane

My flight to Los Angeles was canceled Had to book another flight and you charged me extra $500 Very bad experience

Comfort was left wanting due to such a long flight, made the wife and I wish we could upgrade the seats to Business class or First Class, but did not have that option. Food was good but had very limited options and I have a dietary restriction which was difficult for the staff to accommodate since everything provided came with cheese on it. (Cheese could potentially kill me) Did not have an option to inform the staff until we were already in the air about the restriction and was not provided another option before flight departed.

It was a 2 hour flight to Taiwan. Lunch was served. China Airlines goes above and beyond for their passengers.

They were helpful, considerate with asking us for standby preboarding with our infant, gave us toys and excellent service onboard. They were always on time, even early boarding once! All our luggage arrived intact, and they even brought our baby car seat to oversized for us. We love China Airlines!

Staff is friendly, great variety of entertainment, check in a little messy but due to people not listening. Overall a pleasant experience. Would use again in the future.

It felt like a new plane. Decent leg room in economy, food was fine, and the plane didn’t feel super dry and uncomfortable.

Free Wi-Fi could have been better in the Airport.

Ask flight attendant for water during flight and she was a little rude get the water.

Baggage made it successfully to destination despite short layover. Appreciate that.

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

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

I didn’t not like that I could not select my seat and ended up with the worse seat.

The landing was bad and the hostess came two times and i was sleeping but when she served the person that nexts to me I woke up and she didn’t even asked me if I need any drink or snacks two times!!!!

Plane was late because of a mechanical malfunction and the food listed as available was not. Flight attendants seem over worked and under paid. They just done seem happy. And that can be seen in their faces.

Waited 3 hours on a plane to de-ice due to manpower issues. Waited another hour and a half once we landed because of a gate issue. Missed my connections. Created. A total of 13 hours of delay.

Great, on time departure, friendly and accommodating crew, great leg room, Smith flight

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

Honestly, I didn’t expect that I will experience this long time wait during the check in. There was only one person who was taking care of the passengers for the economy class and it took us to wait about one hour to do our check i. As a result we barely get to the airplane as the gate was at the end of the airport. That is totally not professional where one crue is working at the registration desk with economy and 3-4 crues are helping for the business class.

Like most domestic flights in the US, you are basically on your own with this airline when it comes to food, so be sure to purchase meals and drinks ahead of time or expect to arrive starving and dehydrated (like I was).

Aisle chair was good and liked the foot bar preventing you from putting your foot in the isle, The breakfast on this international flight to Zurich was horrible (Europeans, specially, used to good food) may make this a dealbreaker for booking with United Airlines again. I agreed with my Spanish fellow passenger.

On time take off…US cabins look tired and need of refresh!

Backpack should NOT allowed put in the flight bin , only put it under the seat. I can't find space put my carry on luggage!!! and I pay for it ! that was very bad experience

I paid $380 for my one-way ticket from California to Minnesota. The fair did not include online check-in. I received instructions from their app to check in at a kiosk. At the kiosk, the boarding pass would not print until an actual person came to verify that I had a personal item and not a carry-on item, On the plane, the person next to me was drunk and allowed to continue to order alcohol. United is garbage I’d rather fly spirit.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

Terrible! The plane was old and you are required to connect your own device to their Wi-Fi rather than have entertainment options in the back of the seat in front of you. The Wi-Fi went out during the flight and there was only one plug for the devices every two seats. Three out of five surrounding my family did not work. The seats and spaces under them were so small I could not fit my backpack, which I’ve always brought on flights and fit before no problem. The crew were unpleasant and patronizing.

Due to one crew member not showing up to work, our flight was significantly delayed causing us to miss our connecting flight in Houston to Mississippi causing us to be delayed by more than 6 hours and missing our event all together. Very disappointing. All because ONE crew member called in sick. United did grant us a $15 meal voucher, which was a small but appreciated concession that I wasn’t able to use because I ordered my lunch and paid for it before applying the concession, and the staff said it was too late to use it. Ugh! We also had a TWO delay coming back from Mississippi, but that was on American Airlines and it was due to weather, so not their fault. Anyway, not at all impressed with United’s handling of our flight and the HUGE disappointment of missing our important family event for our 90 year old mother. All that money and all that stress and emotions for nothing. Having to wait the hour to bring an employee from LAX seemed like something that should not have happened. Why don’t you have a local back-up? Santa Ana is not a little airport in a rural area.

Hated every minute of it. This flight should have only taken 1.5hrs but was delayed over 10hours. Now I am being told I cannot be compensated or refunded my ticket price or extra leg room, which I purchased but did not receive, because the airline is throwing the blame on the 3rd party I purchased tickets through and 3rd party putting the blame on airline. No one wants to help. They received their money and that's all they care about. Im going on 3 days of still trying to get to my final destination, had to cancel car rental, car insurance and hotel. Currently staying in airport until hotels open up. Thank you Lufthansa, Kayak, Underpricer and United for making this trip the worst ever.

Crew was great and did their best to make us comfortable and captain came out at the beginning to announce why the flight was delayed, weather situation up ahead, and kept us updated throughout the flight.

United WiFi is consistently unusable (it can take 10 mins to load a single web page). If you need Wifi to do work, be prepared to lose half a day of productivity.

Flight was 1/2 hour delayed leaving Phoenix. Otherwise it was an average flight. Flight crew on this trip was very nice.

Horrible - they lied to me about baggage & boarding, even though I specifically spoke to their agents the day before my flight about my issue. When I showed up they did not let me board and stranded me at my airport until I bought a new flight with money I did not have to spend.

Not sure why JAL partnered with American Airlines because their service is no where near similar. Flight attendants were not friendly and didn’t smile. Food was horrible…

The experience was great and much better than the flight going out. of course I was in first class but the service was excellent

Comfort of seats, ease of boarding. Food selection could be better

Food options were limited which is absolutely embarrassing for a Flight of this size The staff did not come around as much and I am not accustomed to such poor service from American Airlines Drinks I believe were limited to soda and water

Crew were attentive and friendly. Flight was smooth and early! I enjoyed the less crowded plane. Thank you!

We are gluten free, there were not any available complimentary gluten free options.

No meal on a cross country flight? SFO-MiA is pretty much the definition of a coast to coast flight. No meal provided. Sky high wi-fi rates too. Stop nickel and diming your customers.

The staff was unprofessional and didn’t communicate very well. The boarding process was very disheveled, potentially due to a power outage the previous day but there was no contingency plan to properly get passengers boarded the following day. Once boarded the aircraft stayed on the tarmac for over 45 minutes due to high winds. The communication was sporadic but an announcement was finally made an additional 30 minutes later that the flight was cancelled but we couldn’t get off the plane. Prior to deplaning one of the gate agents came on the plane and made an announcement for everyone to pickup their checked bags and take a card to rebook a new reservation because they didn’t have adequate staff. Flights were missed, passengers went to different airports and there was little to no assistance from AA.

It was ridiculously hard to check in for the flight, and Frontier charged us a LOT of money to have a carry on suitcase, and then told everyone we could not carry on bags and had to check them through at the gate, and didn't refund the extra money we paid to have the suitcase as carry on.

I had a terrible experience with Frontier. I arrived before the 60 minute cut off and was told that Frontier has a two hour window for bags. I was then told the next available flight wasn’t until the end of the day (I had booked a 6am flight). I took a look around and saw other people being told that they could not board their flights or that they had to pay additional fees. I opted to rebook on American Airlines. There’s absolutely no straightforward way to contact Frontier, so this ticket was a complete waste of money. Oh - and the kicker is that the lady lied about the two hour cut off.

Frontier won’t help you at the airport without paying $25. Carry on was $75. Then you get on the plain and every beverage or snack is also a charge. Seats are hard and real packed in. I would never fly them again.

Worst experience I have seen. The flight was cancelled without any reason.

My experience with frontier staff at the Denver airport was absolutely horrible. The manager on duty was even worst if was the worst experience I have ever had, I have never been treated so poorly as a customer in my life! The staff was extremely rude, eye rolls and attitude and then refusal to help me at all. I wish I could never fly frontier again that’s how horrible it was!

The Frontier app wasn’t working. So I could not pay for a carry on the week prior to flying. They charged me 99$ at the gate to carry on a duffle bag.

Good for the price. My only complaint is that the pilot should keep the air flowing while passengers are waiting to getting out of airplane.

Our flight was delayed an hour, then when we got to board our flight finally, we were waiting in our seats for take off for 45 minutes before it was communicated that there was a maintenance issue therefore we waited on the plane for over an hour while that was resolved. We did not get to Phoenix until almost 3 hours after we were originally supposed to. This was the first and last time I will be flying Frontier.

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.

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

Book cheap domestic flights from Ontario

Recent round-trip flight deals

6/8Sat
nonstopFrontier
1h 27mONT-SFO
6/10Mon
nonstopFrontier
1h 23mSFO-ONT
$55
6/8Sat
nonstopFrontier
2h 15mONT-PDX
6/10Mon
nonstopFrontier
2h 15mPDX-ONT
$58
8/6Tue
nonstopAlaska Airlines
2h 35mONT-SEA
8/8Thu
1 stopAlaska Airlines
6h 05mSEA-ONT
$186
8/7Wed
nonstopAlaska Airlines
2h 35mONT-SEA
8/11Sun
nonstopAlaska Airlines
2h 33mSEA-ONT
$187
8/6Tue
1 stopDelta
6h 59mONT-SEA
8/8Thu
1 stopDelta
6h 45mSEA-ONT
$196
8/29Thu
nonstopDelta
2h 44mONT-SEA
9/4Wed
nonstopDelta
2h 54mSEA-ONT
$197
9/6Fri
1 stopAmerican Airlines
5h 43mONT-SFO
9/9Mon
1 stopAmerican Airlines
14h 01mSFO-ONT
$223
8/20Tue
1 stopUnited Airlines
7h 39mONT-EWR
8/31Sat
1 stopUnited Airlines
9h 02mEWR-ONT
$226
9/14Sat
1 stopAmerican Airlines
7h 20mONT-LGA
9/17Tue
2 stopsAmerican Airlines
10h 15mLGA-ONT
$230
8/16Fri
1 stopUnited Airlines
10h 06mONT-EWR
8/19Mon
1 stopUnited Airlines
8h 41mEWR-ONT
$266

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Recent one-way flight deals

6/25Tue
nonstopFrontier
2h 15mONT-PDX
$40
7/8Mon
nonstopFrontier
1h 26mONT-SFO
$40
8/27Tue
1 stopDelta
5h 03mONT-SEA
$88
6/18Tue
1 stopDelta
6h 26mONT-PDX
$98
6/17Mon
1 stopAmerican Airlines
7h 58mONT-ORD
$99
6/22Sat
nonstopUnited Airlines
1h 25mONT-SFO
$99
8/23Fri
nonstopAlaska Airlines
2h 21mONT-PDX
$99
8/3Sat
1 stopAmerican Airlines
5h 52mONT-ORD
$100
9/4Wed
1 stopUnited Airlines
5h 26mONT-SEA
$110
7/4Thu
1 stopAlaska Airlines
8h 25mONT-DFW
$134

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Last minute flights from Ontario to Anywhere

Last minute flight, train and bus deals

6/3Mon
nonstopFrontier
2h 20mONT-PDX
6/13Thu
nonstopFrontier
2h 15mPDX-ONT
$88
6/2Sun
nonstopFrontier
1h 28mONT-SFO
6/5Wed
nonstopFrontier
1h 23mSFO-ONT
$95
6/1Sat
multi-stopAmerican Airlines
6h 09mONT-SFO
6/4Tue
multi-stopAmerican Airlines
5h 49mSFO-ONT
$236
5/31Fri
multi-stopAmerican Airlines
7h 20mONT-PDX
6/1Sat
multi-stopAmerican Airlines
6h 29mPDX-ONT
$274
5/31Fri
multi-stopDelta
6h 12mONT-ORD
6/4Tue
multi-stopDelta
6h 13mORD-ONT
$279
6/1Sat
multi-stopDelta
11h 57mONT-ORD
6/8Sat
multi-stopDelta
6h 22mORD-ONT
$284
5/31Fri
multi-stopUnited Airlines
10h 53mONT-HNL
6/4Tue
multi-stopUnited Airlines
10h 27mHNL-ONT
$340
5/30Thu
multi-stopUnited Airlines
6h 20mONT-PDX
5/31Fri
multi-stopUnited Airlines
6h 35mPDX-ONT
$360
6/2Sun
multi-stopAlaska Airlines
18h 17mONT-HNL
6/9Sun
multi-stopAlaska Airlines
9h 58mHNL-ONT
$390
6/2Sun
multi-stopAlaska Airlines
28h 08mONT-HNL
6/16Sun
multi-stopAlaska Airlines
9h 55mHNL-ONT
$394

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Book cheap international flights from Ontario

Recent round-trip flight deals

6/7Fri
multi-stopFrontier
18h 19mONT-CUN
6/12Wed
multi-stopFrontier
24h 48mCUN-ONT
$352
9/21Sat
multi-stopAmerican Airlines
12h 50mONT-CUN
9/24Tue
multi-stopAmerican Airlines
12h 08mCUN-ONT
$368
9/21Sat
multi-stopAmerican Airlines
14h 40mONT-CUN
9/24Tue
multi-stopAmerican Airlines
12h 27mCUN-ONT
$373
9/21Sat
multi-stopAmerican Airlines
12h 47mONT-CUN
9/24Tue
multi-stopAmerican Airlines
12h 27mCUN-ONT
$374
6/7Fri
multi-stopFrontier
17h 31mONT-CUN
6/12Wed
multi-stopFrontier
13h 38mCUN-ONT
$387
7/6Sat
multi-stopUnited Airlines
16h 35mONT-CUN
7/11Thu
multi-stopUnited Airlines
17h 31mCUN-ONT
$490
7/2Tue
multi-stopUnited Airlines
20h 20mONT-CUN
7/12Fri
multi-stopUnited Airlines
17h 46mCUN-ONT
$511
8/4Sun
multi-stopChina Airlines
17h 50mONT-MNL
9/6Fri
multi-stopChina Airlines
16h 55mMNL-ONT
$876
8/16Fri
multi-stopChina Airlines
17h 50mONT-MNL
9/30Mon
multi-stopChina Airlines
22h 30mMNL-ONT
$877
6/24Mon
multi-stopDelta
31h 50mONT-DEL
6/30Sun
multi-stopDelta
35h 36mDEL-ONT
$1,637

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Recent one-way flight deals

6/11Tue
multi-stopFrontier
7h 17mONT-CUN
$150
6/7Fri
multi-stopFrontier
18h 19mONT-CUN
$156
8/3Sat
multi-stopAmerican Airlines
12h 44mONT-CUN
$175
9/17Tue
multi-stopAmerican Airlines
8h 01mONT-CUN
$177
7/21Sun
multi-stopUnited Airlines
14h 07mONT-CUN
$230
6/26Wed
multi-stopUnited Airlines
16h 35mONT-CUN
$270
8/19Mon
multi-stopAlaska Airlines
31h 35mONT-CUN
$321
7/3Wed
multi-stopAlaska Airlines
18h 15mONT-CUN
$344
8/26Mon
multi-stopChina Airlines
17h 50mONT-MNL
$459
8/25Sun
multi-stopChina Airlines
17h 50mONT-MNL
$460

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Flights from Ontario to Anywhere

Departure:

Ontario (ONT)United States

Return flight deals:

Anywhere - Ontario

Cabin classes:

$382
$153
$274
$36