$135 Find Cheap Flights from Mexico 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 to Ontario departing on 4/15. 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
1 adult, Economy, 0 bags

KAYAK searches 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, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Ontario, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Mexico to Ontario

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Mexico 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Mexico to Ontario

Mon, May 11 - Mon, May 18
Frontier Logo
3:39 pm - 10:05 am
CUN
-
ONT
20h 26m
1 stop
Frontier Logo
8:06 pm - 2:29 pm
ONT
-
CUN
16h 23m
1 stop
$266Frontier
Tue, May 5 - Tue, May 12
Volaris Logo
12:20 pm - 11:05 pm
MTY
-
ONT
11h 45m
1 stop
Volaris Logo
9:36 pm - 7:30 am
ONT
-
MTY
8h 54m
1 stop
$267Volaris
Thu, May 7 - Mon, May 11
Volaris Logo
10:00 am - 7:46 pm
MEX
-
ONT
10h 46m
1 stop
Volaris Logo
9:36 pm - 7:25 am
ONT
-
MEX
8h 49m
1 stop
$272Volaris
Tue, May 5 - Sat, May 9
Frontier Logo
3:39 pm - 11:49 pm
CUN
-
ONT
10h 10m
1 stop
Frontier Logo
10:50 am - 12:04 pm
ONT
-
CUN
23h 14m
1 stop
$275Frontier
Thu, May 7 - Mon, May 11
United Airlines Logo
2:50 pm - 9:58 pm
BJX
-
ONT
8h 08m
1 stop
United Airlines Logo
6:59 pm - 10:51 am
ONT
-
BJX
14h 52m
2 stops
$277United Airlines
Wed, May 6 - Wed, May 13
Volaris Logo
8:52 pm - 11:05 pm
GDL
-
ONT
3h 13mnonstop
Volaris Logo
9:36 pm - 1:34 am
ONT
-
GDL
2h 58mnonstop
$277Volaris
Thu, May 28 - Sun, May 31
United Airlines Logo
2:30 pm - 8:42 pm
GDL
-
ONT
31h 12m
2 stops
United Airlines Logo
5:00 am - 11:25 am
ONT
-
GDL
29h 25m
2 stops
$278United Airlines
Thu, May 7 - Mon, May 11
American Airlines Logo
1:38 pm - 10:40 pm
BJX
-
ONT
10h 02m
1 stop
American Airlines Logo
11:59 pm - 7:59 pm
ONT
-
BJX
19h 00m
1 stop
$286American Airlines
Thu, May 28 - Sun, May 31
American Airlines Logo
3:55 pm - 9:31 am
GDL
-
ONT
18h 36m
1 stop
American Airlines Logo
1:10 pm - 12:48 pm
ONT
-
GDL
22h 38m
1 stop
$292American Airlines
Fri, Apr 24 - Sat, Apr 25
Aeromexico Logo
8:00 am - 9:00 pm
CUN
-
ONT
15h 00m
1 stop
Aeromexico Logo
10:15 pm - 11:30 am
ONT
-
CUN
11h 15m
1 stop
$364Aeromexico
Booking Insights

KAYAK's insights & trends for flights to Ontario

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 round-trip prices found by users searching on KAYAK in the last 72 hours.

In the last 3 days, the cheapest flight deal to Ontario was found on the route from Cancún, at $266 return. The most popular connection is from Dallas to Ontario and KAYAK users have found round-trip deals for as low as $169 in the last 3 days.

What is the cheapest day to fly to Ontario?

The average price of all round-trip 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 Sunday where round-trip tickets can be as cheap as $210. On the other hand, the most expensive day to fly is Saturday, where round-trip prices are $308 on average.

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 San José del Cabo $175 round-trip.

Good to know

Low seasonFebruary
Cheapest flight$135
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly with an average 3% increase in price.
Flight from Cancun to Ontario

FAQs - booking Ontario flights

  • What is the cheapest flight to Ontario?

    In the last 3 days, the cheapest flight deal to Ontario was found on the route from Cancún, at $266 return. The most popular connection is from Dallas to Ontario and KAYAK users have found round-trip deals for as low as $169 in the last 3 days.

  • How far is Ontario Airport from central Ontario?

    The city center of Ontario is 3 miles from Ontario Airport.

  • What is the name of Ontario’s airport?

    Ontario is served by Ontario Airport, also commonly referred to as Ontario or Ontario Intl. The airport code is ONT.

  • How much is a flight to Ontario?

    On average, a flight to Ontario costs $187. The cheapest price found on KAYAK in the last 2 weeks cost $128 and departed from Morelia 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.

Top tips for finding cheap flights to Ontario

  • Looking for cheap airfare to Ontario? 25% of our users found round-trip tickets to Ontario for the following prices or less: From León $132, from San José del Cabo $156, from Guadalajara $200
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Ontario flight deals.

Reviews of the top airlines flying from Mexico 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 Mexico 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.
6.6
VolarisOverall score based on 1171 reviews
7.3Crew
6.3Comfort
4.9Entertainment
6.5Boarding
5.3Food
Airline reviews

The flights were on time, the ground crew and on board crews were kind and efficient. The free snacks for Premium+ were good, similar to US First Class snacks. The plane were clean and bright! Complaints? The seats were worn and the seat-back pockets were missing. Overall, I'll book again with Volaris. Ignore the negative social media posts, understand what your fare includes, buy the add ons you need. We had no problems with our personal items and carryons.

10.0 ExcellentDarcy, Mar 2026
LAP - TIJ
Read more Volaris reviews

The flights were on time, the ground crew and on board crews were kind and efficient. The free snacks for Premium+ were good, similar to US First Class snacks. The plane were clean and bright! Complaints? The seats were worn and the seat-back pockets were missing. Overall, I'll book again with Volaris. Ignore the negative social media posts, understand what your fare includes, buy the add ons you need. We had no problems with our personal items and carryons.

Overall a good red eye. Crew chatted very loudly the whole time making it difficult to sleep.

It’s a 2 1/2 hour flight so good and comfort was not my real concern. Safety, easy, fast was what I was looking for. The crews were great, plane was clean, boarding from CBX was fantastic! Definitely traveling this way again.

The money you save flying volaris is not worth it

Is was a good short flight with some turbulence! I would fly Volaris again.

We had boarding passes for the next flight but we could not catch the flight in the small airport just because volaris closed the boarding at the counters an hour before for which we had to sepnd almost 3+ hours to catch next flight. There are hardly anyone who can speak english, but thank God, we have found an young man who could not only speak English but helped us book for the next flight. The air crafts are noisy and scary sometimes to hear that squeeking noises during the take off and during the flight. They do not even offer a cup of coffee for free in flight. The prices are super high and the services are zero. That’s pretty much for this airlines in summary.

Unfortunately it was not a good flight got canceled had to be at the airport all night long to get a different flight to another airport my first flight with Volaris was very bad. Poor services

The boarding , and it would be nice if they would let us know head of time about flight changes

The fly was 2 hours delayed and the plane was old and dirty. A very umcorfotable flight, which I won't recomend to anyone

The flight was delayed by two hours. I had paid for extended leg room. Due to the delay, the plane was different and I didn't end up having extended leg room. I finally was able to reach Volaris on Whats App and they gave me an airline credit. I wanted a refund to the credit card since I hardly ever fly Volaris. Other than that, it was a very comfortable flight.

The crew acted like they had never done this and kept barking passive aggressive orders at people. + the security line + the delay + sitting on the tarmac for 2 hours + none of the apps or signage updating with correct times

More inflight connection. And leg space is horrible. And the paying for baggage I'd ridiculous!!!

My flight was originally from SAT to MCO connecting from MCO to ORD. We got diverted to ATL and than Frontier staff there was sooo un helpful first they said they couldn’t give us any accommodation since our flight first got delayed that cancelled and now it’s 221am and I am still in ATL since they said they need to create a new flight my final destination is ORD and I have been delayed twice and cancelled. With no real help the frontier app didn’t work no email updates over all such a horrible experience

There's no seats that lean back with little leg space i wad uncomfortable the entire flight. Your charges for extra baggage is despicable and costly!!

Remind customers of the need to have passport or new ID for boarding.

Flight was canceled. Most upsetting was message from Kayak, stating that the flight was canceled and click with Kayak for details regarding rebook, refund details. THERE'S NO INFORMATION PROVIDED BY KAYAK EXCEPT THAT FLIGHT IS CANCELED. AND NOW THIS SURVEY TO FIND OUT HOW WAS THE FLIGHT !!!!!!!

The flight never took off and we spent 7 hours at the airport

Gate not determined until I got to the airport - hard to plan the trip to the airport.

Our flight was canceled. I will never use Kayak nor Frontier for travel again. The entire experience was a headache.

Frontier.. nickel and dime add-ons. Flight late, on time, late again, last minute gate change, arrival gate required a shuttle to the terminal. They sure keep you guessing.. if you like a little chaos and airport anxiety, this is the airline for you!

Everything you need to know for your flight to Ontario

Information on the airport you'll fly into in Ontario