Find flights
Deals
Insights
When to book
FAQs & Tips
Airlines

MRY - ONT

$217 Find cheap flights from Monterey to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Monterey to Ontario departing on 6/18. 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
Sat 6/15
Sat 6/22

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 in flight searches from Monterey to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Monterey to Ontario, as well as popular online travel agencies
In the last 7 days travelers have searched 42,211,976 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals from Monterey to Ontario (MRY-ONT)

 
These are the cheapest deals for flights from Monterey to Ontario currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Monterey to Ontario

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Monterey to Ontario.

Recent one-way flight deals from Monterey to Ontario

Only flying one-way? Below are some of the best one-way flight deals from Monterey to Ontario found on KAYAK recently.

Recent last minute flight deals from Monterey to Ontario

Leaving soon but still want a bargain? Check out these latest deals for last minute flights from Monterey to Ontario.

Recent direct flight deals from Monterey to Ontario

The latest deals for direct flights from Monterey to Ontario so you can sit back and relax without the need for a layover.

Cheap bus & train deals from Monterey to Ontario

Find recent round-trip train or bus tickets from Monterey to Ontario.

All round-trip flight deals to Ontario

The cheapest plane tickets to Ontario found on KAYAK recently.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
7:45 am - 12:15 pmMRY-ONT
4h 30m1 stop
6:20 am - 11:46 pmONT-MRY
17h 26m1 stop
$358United Airlines
Find Deal
Thu, Jul 4 - Sun, Jul 7
6:05 am - 10:27 pmMRY-ONT
16h 22m1 stop
6:03 am - 11:44 pmONT-MRY
17h 41m1 stop
$406United Airlines
Find Deal
Sat, Jun 15 - Sat, Jun 22
7:06 am - 10:45 pmMRY-ONT
15h 39m1 stop
1:30 pm - 11:46 pmONT-MRY
10h 16m1 stop
$437United Airlines
Find Deal
Fri, Jun 28 - Mon, Jul 1
1:37 pm - 10:20 pmMRY-ONT
8h 43m1 stop
8:49 pm - 12:55 pmONT-MRY
16h 06m1 stop
$442Alaska Airlines
Find Deal
Tue, Aug 20 - Thu, Aug 22
7:45 am - 10:49 pmMRY-ONT
15h 04m1 stop
6:20 am - 11:46 pmONT-MRY
17h 26m1 stop
$452United Airlines
Find Deal
Sun, Jul 7 - Sun, Jul 14
6:05 am - 12:45 pmMRY-ONT
6h 40m1 stop
6:20 am - 11:44 pmONT-MRY
17h 24m1 stop
$457United Airlines
Find Deal
Wed, May 29 - Mon, Jun 3
6:05 am - 10:27 pmMRY-ONT
16h 22m1 stop
6:20 am - 11:44 pmONT-MRY
17h 24m1 stop
$465United Airlines
Find Deal
Sun, Jun 9 - Thu, Jun 20
8:35 am - 1:21 pmMRY-ONT
4h 46m1 stop
10:49 am - 2:01 pmONT-MRY
3h 12m1 stop
$486United Airlines
Find Deal
Thu, Sep 19 - Wed, Sep 25
2:03 pm - 11:59 pmMRY-ONT
9h 56m1 stop
8:20 pm - 1:26 pmONT-MRY
17h 06m1 stop
$522Alaska Airlines
Find Deal
Wed, Jul 10 - Fri, Jul 12
2:10 pm - 11:58 pmMRY-ONT
9h 48m1 stop
8:20 pm - 1:26 pmONT-MRY
17h 06m1 stop
$542Alaska Airlines
Find Deal
Wed, Jun 12 - Fri, Jun 14
2:03 pm - 11:59 pmMRY-ONT
9h 56m1 stop
$217Alaska Airlines
Find Deal
Tue, Jun 18
5:05 am - 12:33 pmMRY-ONT
7h 28m1 stop
$243United Airlines
Find Deal
Thu, Jun 13
5:10 am - 12:33 pmMRY-ONT
7h 23m1 stop
$245United Airlines
Find Deal
Sat, Aug 10
12:59 pm - 8:47 amMRY-ONT
19h 48m1 stop
$290American Airlines
Find Deal
Fri, Jun 21
3:23 pm - 9:05 amMRY-ONT
17h 42m2 stops
$315Alaska Airlines
Find Deal
Fri, Jun 21
3:23 pm - 9:05 amMRY-ONT
17h 42m2 stops
$320Alaska Airlines
Find Deal
Thu, Jun 13
5:10 am - 10:45 pmMRY-ONT
17h 35m2 stops
$322United Airlines
Find Deal
Tue, Jul 23
5:05 am - 12:33 pmMRY-ONT
7h 28m1 stop
$334United Airlines
Find Deal
Mon, Jun 3
6:05 am - 10:27 pmMRY-ONT
16h 22m1 stop
$358United Airlines
Find Deal
Fri, Jun 21
5:05 am - 8:48 pmMRY-ONT
15h 43m1 stop
$363United Airlines
Find Deal
Sun, Jun 16
6:00 am - 11:04 pmMRY-ONT
17h 04m1 stop
5:15 am - 1:19 pmONT-MRY
8h 04m1 stop
$478United Airlines
Find Deal
Fri, May 17 - Sun, May 19
6:00 am - 11:04 pmMRY-ONT
17h 04m1 stop
6:00 am - 12:20 pmONT-MRY
6h 20m1 stop
$653United Airlines
Find Deal
Fri, May 17 - Mon, May 20
6:00 am - 11:04 pmMRY-ONT
17h 04m1 stop
5:55 am - 11:44 pmONT-MRY
17h 49m1 stop
$788United Airlines
Find Deal
Sun, May 19 - Sun, May 26
6:00 am - 11:04 pmMRY-ONT
17h 04m1 stop
5:55 am - 11:44 pmONT-MRY
17h 49m1 stop
$822United Airlines
Find Deal
Sun, May 19 - Sun, May 26
6:00 am - 11:04 pmMRY-ONT
17h 04m1 stop
6:00 am - 12:20 pmONT-MRY
6h 20m1 stop
$958United Airlines
Find Deal
Fri, May 17 - Sun, May 19
6:00 am - 10:01 amMRY-ONT
4h 01m1 stop
1:36 pm - 8:51 pmONT-MRY
7h 15m1 stop
$981United Airlines
Find Deal
Mon, May 20 - Mon, May 20
6:12 am - 11:47 amMRY-ONT
5h 35m1 stop
9:00 pm - 12:49 amONT-MRY
3h 49m1 stop
$1,082American Airlines
Find Deal
Sun, May 19 - Thu, May 23
6:12 am - 11:47 amMRY-ONT
5h 35m1 stop
7:40 pm - 9:20 amONT-MRY
13h 40m1 stop
$1,260American Airlines
Find Deal
Mon, May 20 - Mon, May 20
2:10 pm - 11:58 pmMRY-ONT
9h 48m1 stop
10:00 am - 10:33 pmONT-MRY
12h 33m2 stops
$1,757Alaska Airlines
Find Deal
Fri, May 17 - Sun, May 19
4:22 pm - 10:29 pmMRY-ONT
6h 07m1 stop
9:30 am - 7:30 pmONT-MRY
10h 00m1 stop
$1,994American Airlines
Find Deal
Sat, May 18 - Tue, May 21

Flights from Monterey to Ontario - Travel Insights & Trends

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

What’s the cheapest day of the week to fly from Monterey to Ontario?

The average price of all flights from Monterey to Ontario clicked on KAYAK for each day over the last 12 months.
For Monterey to Ontario, Monday is the cheapest day to fly on average and Saturday is the most expensive. Flying from Ontario back to Monterey, the best deals are generally found on Saturday, with Tuesday being the most expensive.

What is the cheapest month to fly from Monterey to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Monterey 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 from Monterey to Ontario is April, where tickets cost $114 on average. On the other hand, the most expensive months are January and February, where the average cost of tickets is $230 and $188 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Monterey 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 on the flight from Monterey to Ontario, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 54 days before departure.

Which airlines provide the cheapest flights from Monterey to Ontario?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 3 days, Alaska Airlines offered the best one-way deal for that route, at $217. KAYAK users also found Monterey to Ontario round-trip flights on United Airlines from $358 and on Alaska Airlines from $442.

Good to know

Cheapest flight

$217
Flight from Monterey to Ontario

When to book flights from Monterey to Ontario

Are your dates flexible? Find out the best times to travel from Monterey 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. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Monterey to Ontario

  • What is the cheapest flight from Monterey to Ontario?

    In the last 3 days, the lowest price for a flight from Monterey to Ontario was $217 for a one-way ticket and $358 for a round-trip.

  • Do I need a passport to fly between Monterey and Ontario?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Monterey to Ontario?

    Monterey and Ontario are both served by 1 main airport. You will leave Monterey from Monterey Regional and will be arriving at Ontario.

  • Which aircraft models fly most regularly from Monterey to Ontario?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Monterey to Ontario?

    oneworld, and Star Alliance are the airline alliances operating flights between Monterey and Ontario, with oneworld being the most commonly used for this route.

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Monterey 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 Monterey 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 to Monterey with another airline. Booking your flights between Monterey and ONT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Monterey 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 from Monterey up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airline flying from Monterey to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Monterey to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Monterey 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.
7.4
United AirlinesOverall score based on 10924 reviews
7.1Entertainment
7.7Boarding
6.7Food
8.1Crew
7.2Comfort
Airline reviews

Check in etc was very good. As for on the plane, it was like flying in a freezer. It was so cold, i have flown for years and never been so cold on a plane. Staff on board said its always cold when flying which is a load of rubbish. They wouldnt put any heating on and now i have the flu because of this .

6.0 GoodBrian, May 2024HNL - LAX
Read more about United Airlines reviews

Check in etc was very good. As for on the plane, it was like flying in a freezer. It was so cold, i have flown for years and never been so cold on a plane. Staff on board said its always cold when flying which is a load of rubbish. They wouldnt put any heating on and now i have the flu because of this .

I’ve had a couple flights this week on United that were delayed by an hour or more

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

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

Our original business class flight was cancelled so we not only downgraded but we were also spread out across the plane not sitting together in separate middle seats. My poor kids were scared and couldn’t see me on the flight and the crew wasn’t sensitive to the situation and what the airlines did to us. Very dissatisfied with United airlines.

The WiFi didn’t work and the seats are too close together. Very uncomfortable.

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.

Book cheap flights from Monterey to Ontario

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Monterey to Ontario found on KAYAK in the last 72 hours.
6/18Tue
1 stopAlaska Airlines
9h 56mMRY-ONT
$217
6/13Thu
1 stopUnited Airlines
7h 28mMRY-ONT
$243
8/10Sat
1 stopUnited Airlines
7h 23mMRY-ONT
$245
6/21Fri
1 stopAmerican Airlines
19h 48mMRY-ONT
$290
6/21Fri
2 stopsAlaska Airlines
17h 42mMRY-ONT
$315
6/13Thu
2 stopsAlaska Airlines
17h 42mMRY-ONT
$320
7/23Tue
2 stopsUnited Airlines
17h 35mMRY-ONT
$322
6/3Mon
1 stopUnited Airlines
7h 28mMRY-ONT
$334
6/21Fri
1 stopUnited Airlines
16h 22mMRY-ONT
$358
6/16Sun
1 stopUnited Airlines
15h 43mMRY-ONT
$363

Search by stops

Search by airline

Search by price

Last minute flights from Monterey 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 from Monterey to Ontario that are departing in the next 10 days.
5/17Fri
multi-stopUnited Airlines
17h 04mMRY-ONT
5/19Sun
multi-stopUnited Airlines
8h 04mONT-MRY
$478
5/17Fri
multi-stopUnited Airlines
17h 04mMRY-ONT
5/20Mon
multi-stopUnited Airlines
6h 20mONT-MRY
$653
5/19Sun
multi-stopUnited Airlines
17h 04mMRY-ONT
5/26Sun
multi-stopUnited Airlines
17h 49mONT-MRY
$788
5/19Sun
multi-stopUnited Airlines
17h 04mMRY-ONT
5/26Sun
multi-stopUnited Airlines
17h 49mONT-MRY
$822
5/17Fri
multi-stopUnited Airlines
17h 04mMRY-ONT
5/19Sun
multi-stopUnited Airlines
6h 20mONT-MRY
$958
5/20Mon
multi-stopUnited Airlines
4h 01mMRY-ONT
5/20Mon
multi-stopUnited Airlines
7h 15mONT-MRY
$981
5/19Sun
multi-stopAmerican Airlines
5h 35mMRY-ONT
5/23Thu
multi-stopAmerican Airlines
3h 49mONT-MRY
$1,082
5/20Mon
multi-stopAmerican Airlines
5h 35mMRY-ONT
5/20Mon
multi-stopAmerican Airlines
13h 40mONT-MRY
$1,260
5/17Fri
multi-stopAlaska Airlines
9h 48mMRY-ONT
5/19Sun
multi-stopAlaska Airlines
12h 33mONT-MRY
$1,757
5/18Sat
multi-stopAmerican Airlines
6h 07mMRY-ONT
5/21Tue
multi-stopAmerican Airlines
10h 00mONT-MRY
$1,994

Search by stops

Search by airline

Search by price

Monterey - Ontario Flights

Departure:

Monterey (undefined)United States

Destination:

Ontario (ONT)United States

Return flight deals:

Ontario - Monterey

Cabin classes: