$43 Find Cheap Flights from Ontario to Mexico

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 Mexico departing on 10/6. 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

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Cheap Flights from Ontario to Mexico

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Cancún
Cancún2 stops$345
Mexico City
Mexico City1 stop$313
Guadalajara
Guadalajaranonstop$300
Puerto Vallarta
Puerto Vallarta1 stop$377
León
Leónnonstop$192
Tijuana
Tijuana1 stop$304
Oaxaca
Oaxaca1 stop$327
Monterrey
Monterrey1 stop$349
Morelia
Morelianonstop$186
Mérida
Mérida1 stop$347
Mazatlán
Mazatlán1 stop$589
Ixtapa
Ixtapa1 stop$451
Puerto Escondido
Puerto Escondido2 stops$670
Aguascalientes
Aguascalientes2 stops$432
Veracruz
Veracruz1 stop$538
La Paz
La Paz1 stop$330
Cancún
Cancún2 stops$345
Mexico City
Mexico City1 stop$313
Guadalajara
Guadalajaranonstop$300
Puerto Vallarta
Puerto Vallarta1 stop$377
León
Leónnonstop$192
Tijuana
Tijuana1 stop$304
Oaxaca
Oaxaca1 stop$327
Monterrey
Monterrey1 stop$349
Morelia
Morelianonstop$186
Mérida
Mérida1 stop$347
Mazatlán
Mazatlán1 stop$589
Ixtapa
Ixtapa1 stop$451
Puerto Escondido
Puerto Escondido2 stops$670
Aguascalientes
Aguascalientes2 stops$432
Veracruz
Veracruz1 stop$538
La Paz
La Paz1 stop$330

Book Cheap Ontario to Mexico Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Mexico 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 Ontario to Mexico

Mon, Sep 29 - Sat, Oct 4
Volaris Logo
12:40 pm - 3:04 pmONT-SJD
2h 24mnonstop
Volaris Logo
3:54 pm - 6:19 pmSJD-ONT
2h 25mnonstop
$170Volaris
Find Deal
Fri, Oct 31 - Mon, Nov 3
Volaris Logo
12:40 pm - 3:04 pmONT-SJD
2h 24mnonstop
Volaris Logo
5:12 pm - 6:44 pmSJD-ONT
2h 32mnonstop
$180Volaris
Find Deal
Thu, Jan 22 - Thu, Jan 29
United Airlines Logo
6:00 am - 10:35 pmONT-GDL
14h 35m2 stops
United Airlines Logo
1:35 pm - 9:58 pmGDL-ONT
10h 23m1 stop
$329United Airlines
Find Deal
Sun, Oct 26 - Fri, Oct 31
United Airlines Logo
5:05 am - 2:45 pmONT-CUN
7h 40m1 stop
United Airlines Logo
12:27 pm - 10:31 pmCUN-ONT
12h 04m1 stop
$356United Airlines
Find Deal
Mon, Sep 29 - Tue, Oct 7
American Airlines Logo
4:45 pm - 10:56 amONT-CUN
16h 11m2 stops
American Airlines Logo
12:20 pm - 10:42 pmCUN-ONT
12h 22m2 stops
$361American Airlines
Find Deal
Tue, Nov 4 - Fri, Nov 7
American Airlines Logo
6:10 am - 5:57 pmONT-CUN
8h 47m1 stop
American Airlines Logo
3:32 pm - 12:03 pmCUN-ONT
23h 31m1 stop
$362American Airlines
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Fri, Nov 14 - Thu, Nov 20
Frontier Logo
1:46 pm - 12:18 pmONT-CUN
19h 32m2 stops
Frontier Logo
4:58 pm - 11:57 pmCUN-ONT
9h 59m1 stop
$363Frontier
Find Deal
Fri, Nov 14 - Fri, Nov 21
Southwest Logo
9:15 pm - 4:05 pmONT-CUN
15h 50m2 stops
Southwest Logo
5:30 pm - 12:05 amCUN-ONT
9h 35m1 stop
$374Southwest
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Tue, Dec 2 - Sat, Dec 6
Southwest Logo
5:25 am - 5:00 pmONT-CUN
8h 35m1 stop
Southwest Logo
11:45 am - 7:00 pmCUN-ONT
10h 15m2 stops
$384Southwest
Find Deal
Wed, Oct 15 - Wed, Oct 22
Frontier Logo
8:00 am - 9:10 pmONT-MEX
12h 10m1 stop
Frontier Logo
7:55 am - 11:50 pmMEX-ONT
16h 55m2 stops
$422Frontier
Find Deal
Booking Insights

KAYAK's insights & trends for Ontario to Mexico flights

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

What is the cheapest Ontario to Mexico flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Mexico from Ontario found in the last 72 hours was to León, at $100 round-trip. The most popular route is from Ontario (ONT) to Guadalajara (GDL), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $157.

Can I save money by flying with a layover from Ontario to Mexico?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $241, prices are generally cheapest when you fly direct.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Mexico, 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 Ontario to Mexico is February, when tickets cost $493 (return) on average. On the other hand, the most expensive months are January and December, when the average cost of round-trip tickets is $572 and $562 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Ontario to Mexico, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Ontario to Mexico, you should book around 2 weeks before departure, which saves you about 13% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Good to know

Low seasonApril
Cheapest flight$43
Best time to beat the crowds with an average 0% drop in price.
Most popular time to fly and prices are also 12% lower on average.
Flight from Ontario to San José del Cabo

FAQs - booking Mexico flights

  • How does KAYAK find such low prices on flights from Ontario to Mexico?

    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 to Mexico.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Ontario to Mexico 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 to Mexico?

    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 from Ontario to Mexico 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 from Ontario to Mexico?

    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 to Mexico up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Mexico?

    The cheapest time of day to fly to Mexico is generally in the evening, when round-trip flights cost $317 on average. Morning departures are around 77% more expensive than evening flights, on average. The most expensive time of day to fly to Mexico is generally in the morning, which is peak travel time and where the average cost of a ticket is $563.

Top tips for finding cheap flights to Mexico

  • Looking for a cheap flight? 25% of our users found tickets from Ontario to the following destinations at these prices or less: Guadalajara $149 one-way - $311 round-trip; San José del Cabo $43 one-way - $201 round-trip

Reviews of the top 5 airlines serving from Ontario to Mexico

 
Need help choosing which airline to fly with from Ontario to Mexico? 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.
8.0
SouthwestOverall score based on 4242 reviews
8.1Boarding
8.0Comfort
8.6Crew
7.0Food
7.5Entertainment
Airline reviews

As always, the entire Southwest experience was wonderful, from online booking to flight to baggage retrieval. Very grateful.

10.0 ExcellentRobert, Sep 2025SFO - LAS
Read more Southwest reviews

As always, the entire Southwest experience was wonderful, from online booking to flight to baggage retrieval. Very grateful.

The weather could have been better. There was a 40 minute ATC delay in SFO because of marine fog and a micro cell storm delayed landing and take-off at Nashville. The gate was changed 5 minutes from boarding from gate B3 to gate C23 at Nashville airport.

The cabin was quiet for the redeye flight. The area was clean. The staff was great. The 787 Max was in good condition. Drawbacks were that the seat widths were tight for some passengers. The seat padding was at best average and for a long flight uncomfortable.

Delayed flight. Nicest crew member was a SW pilot flying seated next to me who kindly move to seat the final passenger. Flight extra delayed. My cup of refreshment of ginger ale was so packed with ice it was literally 2 sips.

No trays in our seats, we sat in first row, purchased a business class fare. Had to hold our drinks and snack in our hands. No plugs for our cell phones. Had to pay for it a drink cocktail each. Seats so uncomfortable.

Flight wasn’t even full, but too many carry-ons caused us to run out of bin space. New bag fee has folks who would usually check their bags carrying on. Watching Southwest morph into Spirit/Frontier is so sad to watch

Southwest is Southwest. No frills. If you're luck enough to get a happy crew (we did), then it makes for a nicer flight.

It was a perfect flight in all aspects! Both legs!

Great flight, 47 passengers on a 180 seat plane. Stewardess was pleasant and cheerful.

I liked the crew member who gave flight instructions on "in case of a problem:. The seats are so small that only a young teenager could sit in middle seat.

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

From the first moment you interact with United Airlines, you can expect nothing less but extreme frustration. The baggage handler at the bag drop seems completely unbothered by the presence of customers waiting in line. No help was extended to load the baggage whatsoever. And if any of your bags is overweight by 0.01 pound they will make you re-distribute everything in your suitcase just to play power trip. When it was time to board no help was extended to customers to locate their seats. Moreover. It was a chaotic mess at the gate when it was unclear who should board first and everyone just bunched up, trying to get on the plane. I am sure the crew was doing their best to perform their jobs while being paid their wages however it shouldn’t be that hard to smile once or twice when you’re in the business if serving customers. It is a shame for the United States of America to have a flagship carrier of such low caliber. Our flight was also delayed by about an hour and a half due to further delays prior to our inbound flight. Being someone who has travelled for both business and leisure in Asia, Europe, and South America I have never experienced such poor quality of service.

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

The pilots were late and it made us 1 hour late. The meat was tough and bok choy was also tough.

Stuck on tarmac for two hours plus a 5.5 hour flight. Rude flight attendant. And no meals, not even for purchase!

I learned that seating towards the end of plane that a line forms for the restroom and people use your chair as a hand railing, bumping your seat consistently. I was seated in the aisle. I think that next time if I am towards the back row I would want to sit in the middle or window seat.

The best airline I have ever travel , really good customer service, attention and service !!

United sent me a mileage plus number last year but that number is invalid so I can’t use it to check into flights or collect mileage. There is human to speak about the problem, only computers who keep asking me if I am using the correct email. It’s so frustrating and I cannot resolve it.

Not a great experience. We paid for the upgrade for premium economy seats and seated ourselves in very comfortable seats. Someone came along with the same seat on their boarding pass. The aircraft had been changed and as a result we were booted out and sent further back to small uncomfortable seats. After complaining we were moved to emergency row seats, which gave us more leg room but the seats don’t recline. For people in our 70’s we found having to sit upright from California to NJ very uncomfortable. Not sure why they chose to move senior citizens instead of the two people that were allowed to take the more comfortable seats. Not happy.

Everything was great. Only thing that could’ve made it better was buy on board options for hot food, but the snacks were decent. The flight attendants were great. I had no complaints. I was able to make it to my destination safely

The entertainment package was vast and the selections were very current. Keep updating it was great.

The seat was so hard my tailbone was aching The crew was kind of a b**** because I made a joke that I didn't care if they close the door I total c*** when she was trying to f****** act like she was mad at me because I said that The flight was bumpy. Sure you didnt have control over that.

4 hours late, including over +1 hour waiting in plane to take off. Baggage left behind too.

While waiting to claim my checked luggage, I discovered the airline had lost it. After a long wait and inquiries, I discovered it was on another flight. Fortunately, the airline finally sent my luggage home.

Was not able to watch most shows on the entertainment site. They would not load

Our flight was 1.5 hours delayed. There was no weather for the inbound flight, so I don't understand why. This meant a VERY late arrival and only a quick nap before my morning flight.

Delayed flight, so I switched fights to SFO to Phoenix , Phoenix to DSM. Excellent service through American Airlines

AA re-routed flight from HNL to LAX due to delay. My group of 3 with reserved seats in row 9 was broken up, with one assigned to a middle seat, another in the last row of the plane. Not happy. No explanation to the delay. No apologies. No compensation. Would have been nice to be offered an Admiral Club admission or a voucher for the extra 3 hours of layover in LAX. Could not hear the boarding gate announcements in LAX. Adjacent gate was boarding at the same time. Loud speakers were competing against each other. Barely made my boarding group.

Almost a 6 hour flight and the only food option is a cheese plate… and chips. Also how is it there are no options for texting on American. I’ll be going back to delta and united.

Bad food, small seats that didn’t recline. I thought I was buying a quantas ticket so I feel like I got scammed

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.

In Mexico charges too much for my luggage and I ask for help and nothing one lady she just disappeared 😡😡😡😡😡never going to fly there

Confusion over extra fees. Held up on ramp during boarding. Thin seat cushion. Minimal leg room.

The check-in is either at a kiosk that didn’t allow me to check-in because my middle name was not on the reservation or at an agent that cost $15.

Liked on time, rear entry and exit from plane Dislike the use of duct tape to repair seat rests

Terrible. And they charged over $400 just for luggage. And threatened that I would loose my flight if I didn’t pay. So I didn’t have another choice but to pay.

They check you everything before entering to waiting room, if you have any liquid they take it away even if you buy it inside the airport, no recommend volaris, for mi know Alaska airline is better

They don’t give anything for free you have to pay for everything which it’s expected but at least give out water and a snack as a courtesy for flying with them.

I got to where I needed to go quickly. There were no amenities. And the seats were painful.

The worst. Kayak sent notification at 2am and 10am regarding the delay. Then sends a notification an hour before original depart time that it will depart on time. I had to wait 8 hours at the airport. My family had to pay for lodging in Guadalajara where I was landing for pick up.

Seats were new and comfortable. Staff was fine. Missed my connection due to weather -which wasn’t their fault- but got no help at all. Gate staff sent me to customer service, which was and stayed unstaffed. Sign with QR code directed me to call or chat. Chat was useless. Call was returned after an hour. No itinerary offered by Frontier could get me home in less than 30 hours. Rebooked with another airline and got a partial refund that came to about 10 percent of what I paid to get home.

Finally a Frontier on time and efficient. I've had problems before with your airline, but this time everything went fine.

The experience was good. No frills but I got there safe and sound and on time.

Great for the price. No wifi or entertainment, but gate agents and crew were fantastic and we boarded quickly and left on time.

Cancelled flight after I arrived at airport after 75 min drive and parking. Next flight was 4 days in the future. Had to scramble and buy a much more expensive flight on another carrier.

I liked the turn-style feature at gate 209B at LAX. Very efficient process. The gate staff also made several, clearly directed announcements so I felt very informed.

The seats were awful, hard plastic covered in sheet vinyl. The airline tries to scam you into paying extra to get seat together when the flight wasn’t full. They were going to separate a family with young children but my wife who had a row to herself gave up her seat so the young mom could be with her young boys. I’m never giving this airline my money again.

It was a short flight so no food or entertainment….

Frontier had yet another flight cancellation. Have never made a complete round trip with this airline without at least one leg getting cancelled. Miserable flights - dirty, uncomfortable planes that apparently always have issues since I've had multiple delays and cancellations with them.

Flight was delayed 3 times, would have been nice to have received text message instead of email notifications. Frontier app wasn’t even updated accordingly, no gate number disclosed. No agent at front desk of gate to inform of delay. Very confused and left if the dark

Everything you need to know for your flight from Ontario to Mexico

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