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Ontario

$147+ 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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
CUN — ONT
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
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 December 12, 2025.

This United Airlines deal was found by Cheapflights users on 12/11. 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.
Wed 12/244:51 pmCUN - ONT
1 stop8h 01mUnited Airlines
Mon 12/296:04 amONT - CUN
1 stop11h 14mUnited Airlines
Deal found 12/11$329
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Sat 12/208:39 amCUN - ONT
2 stops28h 22mUnited Airlines
Mon 12/296:04 amONT - CUN
1 stop11h 14mUnited Airlines
Deal found 12/11$376
This United Airlines deal was found by Cheapflights users on 12/10. 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.
Mon 12/154:51 pmCUN - ONT
1 stop7h 58mUnited Airlines
Tue 12/235:05 amONT - CUN
1 stop7h 45mUnited Airlines
Deal found 12/10$377
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Wed 12/244:51 pmCUN - ONT
1 stop8h 01mUnited Airlines
Sun 12/285:05 amONT - CUN
1 stop30h 13mUnited Airlines
Deal found 12/11$395
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Mon 12/2212:28 pmCUN - ONT
1 stop12h 24mUnited Airlines
Mon 12/2911:59 pmONT - CUN
2 stops17h 19mUnited Airlines
Deal found 12/11$400
This Frontier deal was found by Cheapflights users on 12/11. 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.
Wed 12/244:58 pmCUN - ONT
1 stop10h 01mFrontier
Mon 12/296:00 pmONT - CUN
2 stops20h 12mFrontier
Deal found 12/11$444
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Wed 12/316:30 amCUN - ONT
1 stop18h 22mUnited Airlines
Tue 1/68:00 amONT - CUN
1 stop6h 50mUnited Airlines
Deal found 12/11$447
This Booking.com deal was found by Cheapflights users on 12/9. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/314:58 pmCUN - ONT
1 stop10h 01mFrontier
Thu 1/16:45 amONT - CUN
1 stop7h 27mFrontier
Deal found 12/9$458
This Frontier deal was found by Cheapflights users on 12/11. 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.
Wed 12/244:58 pmCUN - ONT
1 stop10h 01mFrontier
Sun 12/286:37 pmONT - CUN
2 stops13h 39mFrontier
Deal found 12/11$521
This eDestinos deal was found by Cheapflights users on 12/11. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/204:58 pmCUN - ONT
2 stops27h 44mFrontier
Mon 12/296:00 pmONT - CUN
2 stops20h 12mFrontier
Deal found 12/11$525
This Frontier deal was found by Cheapflights users on 12/11. 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.
Wed 12/314:58 pmCUN - ONT
1 stop10h 01mFrontier
Tue 1/64:04 pmONT - CUN
2 stops22h 32mFrontier
Deal found 12/11$528

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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$307
(FlightHub)

One-way from

$147
(Trip.com)

Popular in

April

Cheapest in

October

Average price

$493
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. 8% potential increase in price ($37 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 12, 2025.
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

Sun 3/1

10:39 am-8:11 pm

1 stop12h 32m

Ontario

Sat 3/14

11:59 pm-1:37 pm

1 stop11h 38m

$307

CancúnOntario

CUN - ONT

CUNONT

Cancun

Thu 1/22

5:55 pm-11:18 am

2 stops20h 23m

Ontario

Mon 1/26

6:00 am-3:59 pm

1 stop6h 59m

$328

CancúnOntario

CUN - ONT

CUNONT

Cancun

Wed 12/24

4:51 pm-9:52 pm

1 stop8h 01m

Ontario

Mon 12/29

6:04 am-8:18 pm

1 stop11h 14m

$329

CancúnOntario

CUN - ONT

CUNONT

Cancun

Thu 1/22

2:44 pm-9:58 pm

1 stop10h 14m

Ontario

Thu 2/5

6:10 am-3:59 pm

1 stop6h 49m

$375

CancúnOntario

CUN - ONT

CUNONT

Cancun

Mon 12/22

6:30 am-9:52 pm

1 stop18h 22m

Ontario

Mon 12/29

5:05 am-2:18 pm

1 stop30h 13m

$376

CancúnOntario

CUN - ONT

CUNONT

Cancun

Mon 12/15

3:18 pm-10:49 pm

2 stops34h 31m

Ontario

Tue 12/23

5:05 am-3:45 pm

1 stop7h 40m

$376

CancúnOntario

CUN - ONT

CUNONT

Cancun

Sat 12/20

8:39 am-10:01 am

2 stops28h 22m

Ontario

Mon 12/29

6:04 am-8:18 pm

1 stop11h 14m

$376

CancúnOntario

CUN - ONT

CUNONT

Cancun

Sat 1/31

1:35 pm-10:53 pm

1 stop12h 18m

Ontario

Sun 2/15

6:00 am-5:50 pm

1 stop8h 50m

$376

CancúnOntario

CUN - ONT

CUNONT

Cancun

Wed 2/25

2:24 pm-9:34 pm

1 stop10h 10m

$147

CancúnOntario

CUN - ONT

CUNONT

Cancun

Sat 1/24

1:02 pm-10:52 pm

1 stop12h 50m

$154

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 18 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 December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Cancún-Ontario flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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, May is the cheapest month in which you can book a flight from Cancún to Ontario (average of $160). 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.

What is the cheapest time of day to fly from CUN to ONT?

Find hourly flight availability from Cancún to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

It’s typically best to fly out from Cancún to Ontario at noon. Doing so could potentially save you 43% on the flight price compared to flying in the afternoon, which is usually more expensive.

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?

    Volaris and United Airlines can get you from Cancún to Ontario in just under 12h 32m. Your travel time can differ by up to 7h 51m. 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, May is the cheapest month in which you can book a flight from Cancún to Ontario (average of $160). 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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