$193 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 6/2. 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

Wed, May 20 - Wed, May 27
United Airlines Logo
12:30 pm - 5:28 pm
GDL
-
ONT
29h 58m
2 stops
United Airlines Logo
6:30 am - 9:34 pm
ONT
-
GDL
38h 04m
2 stops
$302United Airlines
Tue, Jun 16 - Tue, Jul 14
Frontier Logo
11:55 am - 7:51 pm
MEX
-
ONT
8h 56m
1 stop
Frontier Logo
6:00 am - 5:30 pm
ONT
-
MEX
10h 30m
1 stop
$310Frontier
Tue, Jun 16 - Tue, Jul 14
Frontier Logo
11:55 am - 7:51 pm
MEX
-
ONT
8h 56m
1 stop
Frontier Logo
6:00 am - 5:30 pm
ONT
-
MEX
10h 30m
1 stop
$311Frontier
Thu, May 28 - Sun, May 31
United Airlines Logo
2:30 pm - 12:12 pm
GDL
-
ONT
22h 42m
2 stops
United Airlines Logo
6:00 am - 9:34 pm
ONT
-
GDL
38h 34m
2 stops
$312United Airlines
Sat, Jul 18 - Wed, Aug 5
Frontier Logo
7:00 am - 4:30 pm
MEX
-
ONT
10h 30m
1 stop
Frontier Logo
6:00 am - 5:30 pm
ONT
-
MEX
10h 30m
1 stop
$313Frontier
Thu, Jun 4 - Sun, Jun 7
Volaris Logo
12:49 pm - 11:05 pm
CUN
-
ONT
12h 16m
1 stop
Volaris Logo
9:36 pm - 9:55 am
ONT
-
CUN
10h 19m
1 stop
$330Volaris
Wed, Jun 24 - Sun, Jun 28
Volaris Logo
10:40 am - 7:46 pm
CUN
-
ONT
11h 06m
1 stop
Volaris Logo
9:36 pm - 11:54 am
ONT
-
CUN
12h 18m
1 stop
$331Volaris
Sun, Jun 7 - Sun, Jun 14
Multiple Airlines Logo
3:39 pm - 11:49 pm
CUN
-
ONT
10h 10m
1 stop
Multiple Airlines Logo
9:36 pm - 9:55 am
ONT
-
CUN
10h 19m
1 stop
$362Multiple Airlines
Thu, Jun 4 - Sun, Jun 7
Multiple Airlines Logo
3:39 pm - 11:49 pm
CUN
-
ONT
10h 10m
1 stop
Multiple Airlines Logo
9:36 pm - 9:55 am
ONT
-
CUN
10h 19m
1 stop
$365Multiple Airlines
Fri, Jun 12 - Sat, Jul 4
American Airlines Logo
6:15 am - 1:28 pm
AGU
-
ONT
8h 13m
1 stop
American Airlines Logo
5:34 am - 7:00 pm
ONT
-
AGU
12h 26m
1 stop
$699American Airlines
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 $302 return. The most popular connection is from Seattle to Ontario and KAYAK users have found round-trip deals for as low as $142 in the last 3 days.

How much is a flight to Ontario?

The average and cheapest price for all round-trip flights to Ontario from each origin found by users searching on KAYAK in the last month.

A flight to Ontario costs $302 on average. The cheapest price found on KAYAK in the last 2 weeks cost $165 and departed from Morelia. The most popular routes on KAYAK are San José del Cabo to Ontario which costs $182 on average, and Guadalajara to Ontario, which costs $398 on average.

See prices from:

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 Friday, where round-trip prices are $314 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, from Guadalajara $256 round-trip.

Good to know

Low seasonJanuary
Cheapest flight$193
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly and prices are also 4% lower on average.
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 $302 return. The most popular connection is from Seattle to Ontario and KAYAK users have found round-trip deals for as low as $142 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 $302. The cheapest price found on KAYAK in the last 2 weeks cost $165 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 $187, from Guadalajara $242, from San José del Cabo $306
  • 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.
6.5
VolarisOverall score based on 1165 reviews
4.9Entertainment
5.2Food
6.5Boarding
6.3Comfort
7.3Crew
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 staff at the check in counter was so rude. Made you feel Incompetent

Frontier scheduled a 40 minute connection in DEN. What they failed to mention was that they “close the doors” 20 mins prior to departure, which means you only have 20 mins. Not enough time. Possibly against DOT regulations. Filing complaint.

Flight was scheduled at 9:40pm. Got delayed to 10 am, the next day. crazy

The bag check, flight check-in, and onboard experience convinced my wife and me that we will actively go out of our way to avoid flying Frontier Airlines in the future. At bag check, we were informed that check-in could only be completed via the Frontier mobile app. Unfortunately, the app was extremely frustrating—sending us through repetitive, confusing loops that repeatedly forced us to decline add-on services with nearly every click. While most airline apps upsell, this one felt intentionally exhausting. As the process dragged on, we became genuinely concerned that my phone battery would die before check-in could be completed. We approached the bag check staff—who were standing together talking—and explained both our frustration and our predicament. They laughed. Later, my wife described the interaction as “gaslighting,” which felt accurate. We were then informed it would cost $25 per person simply to have our boarding passes printed. From that point forward, the tone of the experience was consistently hostile. The bag check employees were condescending and combative, behaving more like bullies than customer service staff. Unfortunately, that same attitude continued onboard. One flight attendant argued with me when I attempted to stow my backpack in the overhead bin. I explained that we had each paid $75 to check our bags specifically so we would not need to use carry-on space and could have adequate legroom. She demanded to see my ticket, pointed out that it said “no carry-on”—which I acknowledged—and I reiterated that this was precisely why we paid to check our bags. Her response was, “I don’t make the rules.” She then walked away, but not before asking if I “truly wanted to fly back to Chicago today?”—an unnecessary and unmistakable threat. It is also worth noting that despite booking our tickets together in the same transaction, we were not seated together. Upon our return to Chicago—where we could once again sit together—we compared onboard experiences. We both remarked on how unhappy the flight attendants appeared and how each of us was separately asked whether we would like to purchase a beverage. We declined. At no point was water mentioned as an option, leaving us with the clear impression that even water came at a cost—or that complimentary water, if available at all, was deliberately left unmentioned. Overall, the experience was shocking and deeply disappointing, but it was also a profound learning experience—one we will not forget and will not repeat. -Steve

Plane was hot and miserable and the crew was rude!

12 hour delay required getting on and off plane 3 times - would have at least liked to have been offered a snack or drink

They didn’t offer a water, even after I asked

Zero issues with this flight. Crew was outstanding and flight was super. Plane was clean and fine. The seats need more padding and water should be provided without cost. I recognize it's Frontier but there are some things that should still be part of the flight. But still very satisfied with the experience and quality.

They switched our terminal 3 times and we were delayed for four plus hours!!!

It was an early flight and most people napped/slept and the crew let us which was nice.

Everything you need to know for your flight to Ontario

Information on the airport you'll fly into in Ontario