$178 Find Cheap Flights from Mexico to Ontario - 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 to Ontario 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, 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

Tue, Jul 14 - Fri, Jul 17
Volaris Logo
10:40 am - 7:46 pm
CUN
-
ONT
11h 06m
1 stop
Volaris Logo
9:36 pm - 12:04 pm
ONT
-
CUN
12h 28m
1 stop
$297Volaris
Tue, Jul 14 - Fri, Jul 17
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
$299Volaris
Tue, Jul 14 - Fri, Jul 17
Volaris Logo
4:32 pm - 11:05 pm
CUN
-
ONT
8h 33m
1 stop
Volaris Logo
9:36 pm - 12:04 pm
ONT
-
CUN
12h 28m
1 stop
$300Volaris
Sun, Jul 12 - Fri, Jul 17
Volaris Logo
12:49 pm - 11:05 pm
CUN
-
ONT
12h 16m
1 stop
Volaris Logo
9:36 pm - 12:04 pm
ONT
-
CUN
12h 28m
1 stop
$302Volaris
Tue, Oct 6 - Tue, Oct 20
Frontier Logo
11:55 am - 8:54 pm
MEX
-
ONT
9h 59m
1 stop
Frontier Logo
6:00 am - 5:30 pm
ONT
-
MEX
10h 30m
1 stop
$310Frontier
Sat, Aug 15 - Wed, Aug 26
Frontier Logo
8:46 am - 3:14 pm
GDL
-
ONT
7h 28m
1 stop
Frontier Logo
6:00 am - 4:25 pm
ONT
-
GDL
9h 25m
1 stop
$316Frontier
Thu, Aug 6 - Thu, Aug 13
Multiple Airlines Logo
5:10 pm - 7:32 am
BJX
-
ONT
39h 22m
2 stops
Multiple Airlines Logo
12:40 pm - 4:50 pm
ONT
-
BJX
3h 10mnonstop
$362Multiple Airlines
Thu, Aug 6 - Thu, Aug 13
Multiple Airlines Logo
8:00 pm - 7:32 am
BJX
-
ONT
36h 32m
2 stops
Multiple Airlines Logo
12:40 pm - 4:50 pm
ONT
-
BJX
3h 10mnonstop
$368Multiple Airlines
Thu, Sep 17 - Tue, Sep 22
United Airlines Logo
12:19 pm - 12:12 pm
PVR
-
ONT
24h 53m
2 stops
United Airlines Logo
1:18 pm - 11:10 am
ONT
-
PVR
20h 52m
2 stops
$425United Airlines
Thu, Aug 6 - Mon, Aug 10
United Airlines Logo
3:52 pm - 9:55 pm
CZM
-
ONT
8h 03m
1 stop
United Airlines Logo
5:45 am - 2:42 pm
ONT
-
CZM
6h 57m
1 stop
$547United 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 5 days.

In the last 5 days, the cheapest flight deal to Ontario was found on the route from Cancún, at $297 return. The most popular connection is from Guadalajara to Ontario and KAYAK users have found round-trip deals for as low as $316 in the last 5 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 $268 on average. The cheapest price found on KAYAK in the last 2 weeks cost $170 and departed from León. The most popular routes on KAYAK are San José del Cabo to Ontario which costs $182 on average, and Guadalajara to Ontario, which costs $241 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 $195. On the other hand, the most expensive day to fly is Saturday, where round-trip prices are $322 on average.

What is the cheapest month to fly to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights 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 to Ontario is April, where tickets cost $74 on average for return flights. On the other hand, the most expensive months are May and March, where the average cost of tickets from Mexico is $238 and $231 respectively. For one-way flights, the best month to travel is January with an average price of $41.

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 $237 round-trip.

Good to know

Low seasonJanuary
Cheapest flight$178
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly with an average 12% increase in price.
Flight from Cancun to Ontario

FAQs - booking Ontario flights

  • What is the cheapest flight to Ontario?

    In the last 5 days, the cheapest flight deal to Ontario was found on the route from Cancún, at $297 return. The most popular connection is from Guadalajara to Ontario and KAYAK users have found round-trip deals for as low as $316 in the last 5 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 $268. The cheapest price found on KAYAK in the last 2 weeks cost $170 and departed from León Del Bajio 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 Guadalajara $224
  • 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 1152 reviews
6.3Comfort
6.5Boarding
4.9Entertainment
5.2Food
7.3Crew
Airline reviews

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

2.0 MediocreMaree, Dec 2025
GDL - FAT
Read more Volaris reviews

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

Better communication about delayed flight. I am thankful for a small credit for late flight.

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.

The flight was delayed an hour and a half, and they would not update the board on when the flight was supposed to take off. Once the plane arrived, they started the boarding process before the plane was even ready for the passengers so we had to wait another 45 minutes on the tarmac while we waited for the plane to be ready for us. In my opinion, there is no point in starting the boarding process when you are not ready to board the plane. This just causes a crowded gate with everyone from zone one and zone two standing up going nowhere.

My experience was good. But it seems that every time I go on Volaris the plane is always full, not sure if because the price is cheaper. And the flight attendants kept hitting my shoulder every time they walked by the aisle with their food cart. I’m 6’4” so I barely fit in the seat next to the aisle. Plus the seat was defective. I had a hard time raising the lever where I rest my left arm. I tried calling the flight attendant 3 times if she could assist me but she was too busy talking in the back with her fellow flight attendants. Finally after 20 mins she looked my way and she too struggled to fix the problem but she finally raised it so I could get out of my seat.

I never got an email for checking in for my flight back to Los Angeles so I got to airport extra early to sort it. they changed the gate, and so I had to run to the other end of the airport. Their app is wonky. They are not on WhatsApp and I didn’t have cell service to call for help. I think they need to up their game with communicating.

Inept company. Won't fly again with them if I can help it. Plane was the wrong size and they couldn't board 20 people.

When you make the 3 Lines to board de airplane , I believe that you should make only one line first and then call the next and then last ,,, because the number 3 wait to long just standing there ,, my opinion !!!

Flight got canceled, made me lose my connection flight to Japan. Someone has to pay for it. It might be you guys

I didn’t like anything about the flight. It was delayed six hours and I was traveling with my elderly mother. It was a complete inconvenience. Not happy about my experience.

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

Terrible. The canceled my entire flight when I requested a refund for a trip frontier canceled trip one way.

i was unable to check in the flight. refund requested

I think Frontier was very good at communication. Their app worked very well. Loading was great and the flight was nice and easy.

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

The crew was mostly okay. The flight attendant who answered our questions was curt and unhelpful unfortunately. He seemed upset and I understand having off days.

Flight was cancelled and was not able to get another flight thru Frontier. Per frontier a refund was issued but I do not see a refund on my Afirm account.

The agent at check-in was strident, unwelcoming, and condescending to customers ahead of me.

Was charged 99 dollars for a bag despite agents previously telling me it would be ok. Customer service was unhelpful

I will like you ( Frontier Airlines) to fly into LAX instead of ONT because I live in LA and the subway takes me to my house in just 15 minutes

Everything you need to know for your flight to Ontario

Information on the airport you'll fly into in Ontario