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Ontario

$135+ Cheap flights from Cancún (CUN) to Ontario (ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
CUN — ONT
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
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Cheap flight deals from Cancún to Ontario

Cheapest flights from Cancún to Ontario
Explore the most affordable flight options available from Cancún to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 27, 2026.

This Frontier deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/1412:24 pm
CUN
-
ONT
1 stop14h 35m
Frontier
Fri 2/279:43 pm
ONT
-
CUN
2 stops11h 25m
Frontier
Deal found 1/25$283
This FlightHub deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/510:39 am
CUN
-
ONT
1 stop12h 32m
Volaris
Tue 3/1012:27 am
ONT
-
CUN
1 stop7h 21m
Volaris
Deal found 1/26$291
This Kissandfly.com deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/1210:39 am
CUN
-
ONT
1 stop12h 32m
Volaris
Wed 2/1811:02 pm
ONT
-
CUN
1 stop13h 26m
Volaris
Deal found 1/25$303
This Frontier deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/303:54 pm
CUN
-
ONT
1 stop10h 01m
Frontier
Tue 5/512:59 am
ONT
-
CUN
1 stop11h 40m
Frontier
Deal found 1/27$305
This Mytrip deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/124:18 pm
CUN
-
ONT
1 stop8h 19m
Volaris
Wed 3/1812:42 am
ONT
-
CUN
1 stop9h 23m
Volaris
Deal found 1/26$332
This Frontier deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/512:24 pm
CUN
-
ONT
1 stop14h 35m
Frontier
Mon 3/99:40 pm
ONT
-
CUN
2 stops11h 36m
Frontier
Deal found 1/26$336
This United Airlines deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/124:51 pm
CUN
-
ONT
1 stop8h 08m
United Airlines
Mon 2/165:00 am
ONT
-
CUN
1 stop7h 45m
United Airlines
Deal found 1/26$343
This United Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/264:51 pm
CUN
-
ONT
1 stop8h 08m
United Airlines
Sun 3/16:00 am
ONT
-
CUN
1 stop8h 50m
United Airlines
Deal found 1/25$355
This Frontier deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/1912:24 pm
CUN
-
ONT
1 stop14h 35m
Frontier
Mon 2/236:43 pm
ONT
-
CUN
2 stops14h 33m
Frontier
Deal found 1/24$364

Find flight deals from Cancún to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Cancún (CUN) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$283
(Frontier)

One-way from

$135
(Trip.com)

Popular in

April

Cheapest in

October

Average price

$310
Provider with most accurate pricing for Cancun-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Cancun-Ontario flights.
Search Deals
From Cancun to Ontario
Search Deals
One-way flight from Cancun to Ontario
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($54 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Cancún to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 27, 2026.
Use the filters below to find and compare flights from Cancún to Ontario that are best for you.

Fly from

Cancún

Fly to

Ontario

Route

Depart

Return

Price

CancúnOntario

CUN - ONT

CUNONT

Cancun

Sat 4/25

12:31 pm-10:42 pm

1 stop12h 11m

Ontario

Fri 5/8

12:59 am-2:39 pm

1 stop11h 40m

$283

CancúnOntario

CUN - ONT

CUNONT

Cancun

Thu 4/30

3:54 pm-11:55 pm

1 stop10h 01m

Ontario

Tue 5/5

12:59 am-2:39 pm

1 stop11h 40m

$305

CancúnOntario

CUN - ONT

CUNONT

Cancun

Thu 3/12

4:18 pm-10:37 pm

1 stop8h 19m

Ontario

Wed 3/18

12:42 am-12:05 pm

1 stop9h 23m

$332

CancúnOntario

CUN - ONT

CUNONT

Cancun

Thu 3/5

12:24 pm-11:59 pm

1 stop14h 35m

Ontario

Mon 3/9

9:40 pm-11:16 am

2 stops11h 36m

$336

CancúnOntario

CUN - ONT

CUNONT

Cancun

Thu 2/19

4:51 pm-9:59 pm

1 stop8h 08m

Ontario

Mon 2/23

6:00 am-5:50 pm

1 stop8h 50m

$342

CancúnOntario

CUN - ONT

CUNONT

Cancun

Thu 2/12

4:51 pm-9:59 pm

1 stop8h 08m

Ontario

Mon 2/16

5:00 am-3:45 pm

1 stop7h 45m

$343

CancúnOntario

CUN - ONT

CUNONT

Cancun

Thu 2/26

4:51 pm-9:59 pm

1 stop8h 08m

Ontario

Sun 3/1

6:00 am-5:50 pm

1 stop8h 50m

$355

CancúnOntario

CUN - ONT

CUNONT

Cancun

Thu 3/5

3:18 pm-10:18 pm

1 stop10h 00m

Ontario

Mon 3/9

11:59 pm-11:30 am

1 stop9h 31m

$366

CancúnOntario

CUN - ONT

CUNONT

Cancun

Fri 2/13

8:39 am-9:59 pm

1 stop16h 20m

$211

CancúnOntario

CUN - ONT

CUNONT

Cancun

Wed 2/18

5:55 pm-12:38 pm

2 stops21h 43m

$211

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 17 results
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Compare providers for flights from Cancún to Ontario

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Cancún to Ontario in January.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Cancún-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Cancún-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Cancún-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Cancún-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Cancún-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Cancún to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Cancún with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Cancún to Ontario

What is the cheapest month to book a flight from Cancún to Ontario?

Currently, March is the cheapest month in which you can book a flight from Cancún to Ontario (average of $99). Flying from Cancún to Ontario in November is currently the most expensive (average of $266). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Cancún to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Cancún to Ontario?

    Frontier and Volaris can get you from Cancún to Ontario in just under 8h 19m. Your travel time can differ by up to 3h 52m. Cancún and Ontario are separated by a distance of 2073 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Cancún to Ontario one-way?

    $190 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on United Airlines and American Airlines, with prices starting from $197 and $266, respectively.

  • Can I find deals for flights from Cancún to Ontario that include hotel bookings?

    Yes. In addition to deals on Cancún to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Cancún to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Cancún to Ontario.

  • Can I find deals for business class flights from Cancún to Ontario?

    Yes. Cheapflights offers flight deals from Cancún to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Cancún to Ontario?

    Currently, March is the cheapest month in which you can book a flight from Cancún to Ontario (average of $99). Flying from Cancún to Ontario in November is currently the most expensive (average of $266). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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