$103 Find Cheap Flights from Ontario to Mexico - Compare and Save

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 7/8. 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

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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
Cancún1 stop$356
Mexico City
Mexico City1 stop$309
Guadalajara
Guadalajaranonstop$345
Puerto Vallarta
Puerto Vallarta2 stops$407
León
Leónnonstop$376
Monterrey
Monterrey1 stop$333
Tijuana
Tijuana1 stop$480
Oaxaca
Oaxaca1 stop$351
Morelia
Morelianonstop$341
Mérida
Mérida1 stop$342
Mazatlán
Mazatlán1 stop$417
Aguascalientes
Aguascalientes2 stops$540
Ixtapa
Ixtapa1 stop$399
Veracruz
Veracruz1 stop$396
La Paz
La Paz1 stop$338
Cancún
Cancún1 stop$356
Mexico City
Mexico City1 stop$309
Guadalajara
Guadalajaranonstop$345
Puerto Vallarta
Puerto Vallarta2 stops$407
León
Leónnonstop$376
Monterrey
Monterrey1 stop$333
Tijuana
Tijuana1 stop$480
Oaxaca
Oaxaca1 stop$351
Morelia
Morelianonstop$341
Mérida
Mérida1 stop$342
Mazatlán
Mazatlán1 stop$417
Aguascalientes
Aguascalientes2 stops$540
Ixtapa
Ixtapa1 stop$399
Veracruz
Veracruz1 stop$396
La Paz
La Paz1 stop$338

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

Tue, Aug 18 - Wed, Aug 26
Volaris Logo
12:55 am - 9:45 am
ONT
-
MEX
7h 50m
1 stop
Volaris Logo
10:00 am - 7:46 pm
MEX
-
ONT
10h 46m
1 stop
$309Volaris
Sun, Jul 5 - Tue, Jul 7
Volaris Logo
9:36 pm - 7:25 am
ONT
-
MEX
8h 49m
1 stop
Volaris Logo
12:00 pm - 11:05 pm
MEX
-
ONT
12h 05m
1 stop
$311Volaris
Mon, Jul 6 - Wed, Jul 8
Volaris Logo
9:36 pm - 7:25 am
ONT
-
MEX
8h 49m
1 stop
Volaris Logo
10:00 am - 7:46 pm
MEX
-
ONT
10h 46m
1 stop
$312Volaris
Tue, Aug 4 - Tue, Aug 11
Aeromexico Logo
6:00 am - 1:20 pm
ONT
-
GDL
6h 20m
1 stop
Aeromexico Logo
3:50 pm - 11:34 pm
GDL
-
ONT
8h 44m
1 stop
$352Aeromexico
Wed, Aug 5 - Wed, Aug 12
Delta Logo
6:20 am - 8:07 pm
ONT
-
GDL
12h 47m
1 stop
Delta Logo
8:31 am - 11:34 pm
GDL
-
ONT
16h 03m
2 stops
$356Delta
Wed, Aug 12 - Thu, Aug 27
Aeromexico Logo
6:00 am - 1:20 pm
ONT
-
GDL
6h 20m
1 stop
Aeromexico Logo
3:48 pm - 11:34 pm
GDL
-
ONT
8h 46m
1 stop
$358Aeromexico
Mon, Aug 10 - Tue, Aug 18
United Airlines Logo
5:45 am - 2:42 pm
ONT
-
CZM
6h 57m
1 stop
United Airlines Logo
3:52 pm - 12:50 pm
CZM
-
ONT
22h 58m
2 stops
$590United Airlines
Tue, Nov 3 - Mon, Nov 9
American Airlines Logo
11:59 pm - 1:53 pm
ONT
-
CZM
10h 54m
1 stop
American Airlines Logo
2:53 pm - 11:57 pm
CZM
-
ONT
12h 04m
1 stop
$631American Airlines
Tue, Nov 3 - Mon, Nov 9
American Airlines Logo
2:59 pm - 2:30 pm
ONT
-
CZM
20h 31m
2 stops
American Airlines Logo
3:10 pm - 9:57 am
CZM
-
ONT
21h 47m
2 stops
$635American Airlines
Wed, Oct 14 - Mon, Oct 19
United Airlines Logo
11:10 am - 2:42 pm
ONT
-
CZM
25h 32m
2 stops
United Airlines Logo
3:52 pm - 10:23 am
CZM
-
ONT
20h 31m
2 stops
$654United Airlines
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 5 days was to Guadalajara, at $159 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 5 days was $159.

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 $421, 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 August, when tickets cost $64 (return) on average. On the other hand, the most expensive months are December and July, when the average cost of round-trip tickets is $608 and $576 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 18% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

Good to know

Low seasonSeptember
Cheapest flight$103
Best time to beat the crowds with an average 4% drop in price.
Most popular time to fly with an average 13% increase in price.
Flight from Ontario to Mexico City

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.

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 $143 one-way - $359 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.
7.9
SouthwestOverall score based on 4245 reviews
8.6Crew
8.1Boarding
7.0Food
8.0Comfort
7.5Entertainment
Airline reviews

Flight was delayed, full flight and I had to change gates. Southwest flights are always late later in the day.

4.0 OkaySteven, Jun 2026
ONT - LAS
Read more Southwest reviews

Flight was delayed, full flight and I had to change gates. Southwest flights are always late later in the day.

Was fine, delayed and feels like southwest is always late

The entire experience from boarding to landing was amazing! The crew were very friendly. Will definitely be back.

Delayed flight, lack of information, boarding process is a mess as is the carryon luggage causing issues when leaving the plane….just a poor experience.

Comfortable. Easy. No problems. Just wish they had gf options for snacks.

The crew was very kind and made going to Hawaii relaxing and fun to look forward to! Thank you Southwest for a pleasant flight!

Terrible. Even though there’s assigned seating now, they are still the slowest boarding airline of anyone.

It was good from LAX to Phoenix, But the connection in Phoenix to Tulsa was not that great. The staff on both flights were great. The choice of free entertainment was ok nothing to brag about. The 45 min delay because of some electrical issue wasn't great from Phoenix to Tulsa. We sat there with hardly any air, The seat I had was between windows so the side of the plane pushed in on you. My being a bigger man it then made the seating area uncomfortable. The seats on the plane had no power to connect to recharge your phone or anything. I would recommend that they should look into a slot or clamp to hold your phone to enjoy while watching the entertainment choices hands-free. Also make it possible to raise the inner seat by the window be able to raise the arm rest up to make more room for larger people to set more comfortably. I would also say other then that stop price gouging the airfare or nickel and diming everything. Not fair for people having to fly for emergencies and be paying for higher prices due to the season or holidays. Your making your money either way and the cost of flying is still going to be the same regardless if there's 100 people or 200 people.

Southwest was greaat! The most expensive but the least upsetting for those we were flying to see.

I liked receiving attention from aged and well experienced flight attendants. I disliked the non-gluten-free snack but I brought my own so I was OK.

Lost one piece of luggage even though I checked in 2.5 hours before the flight

The boarding process on the departure from LA was rather slow even though I was in Group 1. For first class, I was not expecting to have to pay for Wi-fi but I did and then the wi-fi was spotty. The entree was surprisingly good and so that was a pleasant surprise. However, once I got to Houston, it was terrible. Unfortunately there was bad weather but the constant gate changes for my connecting flight was difficult to manage due to having to navigate back and forth between different terminals.

Seat pitch is horrible especially on the 15 hour flight. Gate crew at SFO was Outstanding. The flight crew was also great.

It was great with United overall except for two things. 1) It was a 5-hour flight and we were with kids, so we were asking for extra snacks. They were extremely reticent to dole them out even though there wasn't any meal and the kids were starting to hit their limit towards the end. 2) Baggage didn't arrive until 80 minutes after we landed.

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.

Breakfast was not loaded at SFO due to catering company change. Seems like a major airline at a major hub would have thought of something else or warned passengers to pick up food before boarding a 3 hour flight.

Old and out of date plane, it seem like every time I fly with united there’s and issue. We were delayed,

We took off an hour late due to arrival airport not having enough gates. That was followed by 1:30 wait to get our bags delivered for the entire flight.

Checkin was painful and slow! Lady didn’t seem to know what was going on and couldn’t explain the delay. Seemed ahe couldnt see the computer scree and we couldn’t hear her talk through her mask.

Great crew, smooth flight. 30 minute delay on the tarmac with no status updates or information from captain. However, that was the only negative on the trip.

Flight was delayed multiple times without giving any particular reason and the only thing that was communicated was that 'Aircraft is getting ready'. I was stuck at SFO airport for 15 hours and finally took Southwest Airlines flight back home to Dallas.

I was not clear if food was offered or not.

Agency very bad had to cancelled my booking too many changes in the flight changed my flight to 1 week

Ontario airport boarding was very easy to park and access, is clean and TSA took 10 minutes total. Check-in was a breeze and cruise was very nice.

Good flight, seated and had a water within 5 minutes. Crew was hospitable.

The flight was on time and arrived early. The crew were friendly and helpful.

The flight was very smooth and the meal in business class was great.

The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!

VERY disappointed at the agent checking in my luggage. I know that the weight limit is 23 kg, a little over 50 pounds (50.71 pounds). Yet the agent kept repeating "50 pounds". So I said, the limit is 23 kg, and she had the audacity to say 'no, it is 22 kg!" Imagine my surprise. Was she ignorant or was she poorly trained? Not sure. The boarding process was pretty good. The speakers were loud enough so I still could hear them despite inconsiderate passengers continuing to speak while the announcements were going on. During the flight, the teenage girl sitting behind me kept pressing her feet to the back of my chair. I turned around several times, yet she did not get the hint. I did not make a fuss since I sense I had a bad streak that night with AA, so I just did the best I can to lean forward and not let that bother me.

It was wonderful upgrading to first. Plane was so cold thou. Crew was great. Wish there was a food option in first for such a long flight. Doesnt matter the time of day. Chintzy.

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

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

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.

The app doesn’t work. I am having a lot of trouble checking in for flight tomorrow. Very disconcerting. Then they es t to charge extra for checking in at the airport;(

To many extra fees, poor customer service and very uncomfortable flight. No leg room and seat wont recline.

I am disabled and was unable to get any assistance from Volaris. I had to wait in line at front desk for 45 minutes, I am by myself, and unable to stand. When I got to front desk check in, they had no assistance for me. I did however, have wheelchair assistance when I arrived in Mexico City. Thank God for that!

Our flight got overbooked and we missed one day of our trip.

Be prepared to pay extra for everything! I'm not sure I really saved any money?

Check in at LAX was terrible. Unbelievable lines. Chaos. The landing in Morelia was scary, with the plane fishtailing. If other airlines flew directly between California and Morelia, I would never fly Volaris again.

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

The takeoff was the smoothest I've ever experienced on any airline and this is the first time I've flown on frontier so this was an extremely pleasant surprise!

A lady asked to stop the flight after the tunnel pulled away and we began to depart a flight that was already hours late. The attendance respectfully stopped the the plane and had the tunnel return. After the tunnel returned the passenger claimed to have changed her mind . The tunnel was then put in reverse and the passenger remained on the plane .. They should have sent the sick passenger off the plane like initially replaced. They existed a couple off the plane prior to that situation.. So.. all and all.. it was a long and flight.. .

We understand and comply with Frontier’s bag sizes. We’ve had some problems in past while having to await other passengers who do not understand the baggage restrictions or have not prepaid and that is usually our biggest concern (others delaying us) with flying Frontier. Flying OUT of ONT, however, has always been a great experience. I’ve also noted even on delayed Frontier flights very knowledgeable pilots who manage expectations well.

Long lines, rude staff, everything that's offered you have to pay for.

The last time I flew Frontier was in the 1960s when it was a “real” airline. We flew this time because of the price & schedule. As the saying goes, you get what you pay for.

I appreciated the upgrade to free cary-on bag and seat selection at no charge

Flight was delayed on the runway for 40 minutes the crew did not even offer even water to passengers to compensate for the flight delayed. The flight was delayed due to aircraft mechanical issues. Worst customer service ever

This isna terribly run airlines. If you're one minute late, they will deny your ticket. Don't waste your time or money

Flight was delayed for more than 3 hours, crew at ONT airport was rude, and when we got to DFW the airplane had an issue landing, we had to be taxied to the terminal, and the luggage was hold until the next day.

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

Information on your arrival and departure airports