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MRY - ONT

$243 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 5/17. 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 5/25
Sat 6/1

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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 44,979,812 times on KAYAK, and here is why:

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

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Monterey 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
7:45 am - 12:15 pmMRY-ONT
4h 30m1 stop
6:35 pm - 11:46 pmONT-MRY
5h 11m1 stop
$278United Airlines
Find Deal
Sat, Jul 13 - Sat, Jul 20
6:00 am - 10:01 amMRY-ONT
4h 01m1 stop
6:00 am - 12:20 pmONT-MRY
6h 20m1 stop
$291United Airlines
Find Deal
Tue, May 7 - Tue, May 14
7:45 am - 10:45 pmMRY-ONT
15h 00m1 stop
6:35 pm - 11:46 pmONT-MRY
5h 11m1 stop
$342United Airlines
Find Deal
Tue, Jul 23 - Sat, Jul 27
6:00 am - 11:04 pmMRY-ONT
17h 04m1 stop
6:00 am - 12:20 pmONT-MRY
6h 20m1 stop
$372United Airlines
Find Deal
Fri, May 10 - Sat, May 11
7:45 am - 12:15 pmMRY-ONT
4h 30m1 stop
1:30 pm - 11:46 pmONT-MRY
10h 16m2 stops
$387United Airlines
Find Deal
Tue, Jul 23 - Sat, Jul 27
6:05 am - 10:27 pmMRY-ONT
16h 22m1 stop
6:10 am - 11:46 pmONT-MRY
17h 36m1 stop
$421United Airlines
Find Deal
Wed, Jun 26 - Sun, Jun 30
2:10 pm - 11:58 pmMRY-ONT
9h 48m1 stop
4:21 pm - 1:18 pmONT-MRY
20h 57m1 stop
$542Alaska Airlines
Find Deal
Thu, May 23 - Thu, May 30
2:10 pm - 11:58 pmMRY-ONT
9h 48m1 stop
6:00 am - 10:33 pmONT-MRY
16h 33m2 stops
$545Alaska Airlines
Find Deal
Thu, May 23 - Thu, May 30
2:10 pm - 9:05 amMRY-ONT
18h 55m1 stop
8:09 pm - 1:18 pmONT-MRY
17h 09m1 stop
$642Alaska Airlines
Find Deal
Fri, Jun 7 - Tue, Jun 11
6:12 am - 11:47 amMRY-ONT
5h 35m1 stop
6:45 am - 3:36 pmONT-MRY
8h 51m1 stop
$1,022American Airlines
Find Deal
Mon, May 20 - Mon, May 27

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 Wednesday, 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 February, where tickets cost $118 on average. On the other hand, the most expensive months are January and November, where the average cost of tickets is $197 and $168 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 79 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, United Airlines offered the best one-way deal for that route, at $243. KAYAK users also found Monterey to Ontario round-trip flights on United Airlines from $278 and on Alaska Airlines from $542.

Good to know

Cheapest flight

$243
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 $243 for a one-way ticket and $278 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?

    Star Alliance, and oneworld 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 11255 reviews
7.1entertainment
6.7food
7.2comfort
7.7boarding
8.1crew
Airline reviews

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.

2.0 MediocreWayne, Apr 2024ORD - SFO
Read more about United Airlines reviews

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😊

The flight and crew were fine. The entertainment- the sound was so bad through the headphones I could barely understand it and it was a show I had seen before. The food might have been fine but having to have an account with united in order to access the app in order to pay for the food was rage inducing. I had entered my credit card info at home and logged in as guest but that wouldn’t allow the “wallet” tab to open in the app. And then the wifi was so bad that it took about 45 minutes to fully log in and get all the info working at which time I missed the food. You shouldn’t have to give your address, email and phone number in order to get a hamburger.

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.
5/17Fri
1 stopUnited Airlines
4h 01mMRY-ONT
$243
7/31Wed
1 stopAlaska Airlines
9h 56mMRY-ONT
$292
7/31Wed
2 stopsAlaska Airlines
17h 59mMRY-ONT
$297
5/25Sat
1 stopUnited Airlines
16h 22mMRY-ONT
$301
5/18Sat
2 stopsUnited Airlines
17h 49mMRY-ONT
$306
5/10Fri
1 stopUnited Airlines
4h 01mMRY-ONT
$324
5/14Tue
2 stopsUnited Airlines
10h 03mMRY-ONT
$329
6/7Fri
1 stopUnited Airlines
15h 43mMRY-ONT
$333
5/19Sun
1 stopAmerican Airlines
36h 36mMRY-ONT
$362
5/24Fri
1 stopUnited Airlines
15h 43mMRY-ONT
$377

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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.
4/26Fri
multi-stopUnited Airlines
7h 38mMRY-ONT
4/28Sun
multi-stopUnited Airlines
6h 20mONT-MRY
$298
4/26Fri
multi-stopUnited Airlines
8h 59mMRY-ONT
4/28Sun
multi-stopUnited Airlines
6h 20mONT-MRY
$477
4/27Sat
multi-stopUnited Airlines
17h 49mMRY-ONT
4/28Sun
multi-stopUnited Airlines
8h 04mONT-MRY
$482
4/27Sat
multi-stopUnited Airlines
17h 49mMRY-ONT
4/28Sun
multi-stopUnited Airlines
14h 51mONT-MRY
$666
4/28Sun
multi-stopUnited Airlines
7h 25mMRY-ONT
4/29Mon
multi-stopUnited Airlines
7h 15mONT-MRY
$986
4/28Sun
multi-stopUnited Airlines
7h 25mMRY-ONT
4/29Mon
multi-stopUnited Airlines
10h 06mONT-MRY
$991
4/28Sun
multi-stopUnited Airlines
17h 49mMRY-ONT
4/29Mon
multi-stopUnited Airlines
10h 06mONT-MRY
$1,033

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Monterey - Ontario Flights

Departure:

Monterey (MRY)United States

Destination:

Ontario (ONT)United States

Return flight deals:

Ontario - Monterey

Cabin classes:

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