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$144+ 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 2/19. Fares are subject to change and may not be available on all flights or dates of travel.
CUN — ONT
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
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Cheap 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 October 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$331
(OneTravel)

One-way from

$144
(Trip.com)

Popular in

April

Cheapest in

October

Average price

$294
Provider with most accurate pricing for Cancun-Ontario flight deals.
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Provider most trusted by Cheapflights users for Cancun-Ontario flights.
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From Cancun to Ontario
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One-way flight from Cancun to Ontario
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Highest demand for flights based on searches. 8% potential increase in price ($38 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find 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 October 28, 2025.

This United Airlines deal was found by Cheapflights users on 10/26. 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.
Sun 11/21:27 pmCUN - ONT
1 stop12h 04mUnited Airlines
Sun 11/96:05 amONT - CUN
1 stop8h 45mUnited Airlines
Deal found 10/26$369
This United Airlines deal was found by Cheapflights users on 10/25. 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.
Sun 10/262:18 pmCUN - ONT
1 stop10h 13mUnited Airlines
Mon 11/31:29 pmONT - CUN
1 stop23h 16mUnited Airlines
Deal found 10/25$453
This Gotogate deal was found by Cheapflights users on 10/28. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2112:34 pmCUN - ONT
1 stop21h 50mFrontier
Tue 12/306:45 amONT - CUN
1 stop7h 27mFrontier
Deal found 10/28$460
This American Airlines deal was found by Cheapflights users on 10/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/108:45 amCUN - ONT
1 stop16h 43mAmerican Airlines
Wed 12/174:47 pmONT - CUN
1 stop18h 46mAmerican Airlines
Deal found 10/26$490
This United Airlines deal was found by Cheapflights users on 10/25. 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.
Sun 10/2612:37 pmCUN - ONT
1 stop10h 07mUnited Airlines
Wed 10/295:05 amONT - CUN
1 stop7h 40mUnited Airlines
Deal found 10/25$505
This Aeromexico deal was found by Cheapflights users on 10/28. 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/318:00 amCUN - ONT
1 stop13h 19mAeromexico
Mon 11/37:05 amONT - CUN
1 stop11h 15mAeromexico
Deal found 10/28$535

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 October 28, 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 12/21

12:34 pm-7:24 am

1 stop21h 50m

Ontario

Tue 12/30

6:45 am-5:12 pm

1 stop7h 27m

$460

CancúnOntario

CUN - ONT

CUNONT

Cancun

Thu 3/5

11:50 am-6:01 pm

1 stop9h 11m

Ontario

Mon 3/9

6:15 am-3:52 pm

2 stops31h 37m

$465

CancúnOntario

CUN - ONT

CUNONT

Cancun

Wed 1/14

4:51 pm-9:58 pm

1 stop8h 07m

Ontario

Thu 1/22

6:00 am-3:59 pm

1 stop6h 59m

$481

CancúnOntario

CUN - ONT

CUNONT

Cancun

Mon 2/2

8:39 am-9:58 pm

1 stop16h 19m

Ontario

Tue 2/10

6:00 am-3:59 pm

1 stop6h 59m

$481

CancúnOntario

CUN - ONT

CUNONT

Cancun

Fri 1/23

4:51 pm-9:58 pm

1 stop8h 07m

Ontario

Sat 2/14

6:00 am-11:25 am

1 stop26h 25m

$482

CancúnOntario

CUN - ONT

CUNONT

Cancun

Sat 2/21

8:39 am-9:59 pm

1 stop16h 20m

Ontario

Thu 3/5

6:00 am-5:20 pm

1 stop8h 20m

$524

CancúnOntario

CUN - ONT

CUNONT

Cancun

Sun 2/22

11:50 am-6:01 pm

1 stop9h 11m

Ontario

Thu 3/5

6:00 am-1:09 pm

1 stop28h 09m

$528

CancúnOntario

CUN - ONT

CUNONT

Cancun

Wed 1/14

7:40 pm-11:00 am

2 stops18h 20m

Ontario

Thu 1/22

11:34 pm-9:48 am

1 stop7h 14m

$534

CancúnOntario

CUN - ONT

CUNONT

Cancun

Sun 12/21

8:45 am-1:52 pm

1 stop8h 07m

Ontario

Tue 12/30

6:10 am-4:09 pm

1 stop6h 59m

$535

CancúnOntario

CUN - ONT

CUNONT

Cancun

Fri 11/14

6:00 am-11:52 pm

2 stops20h 52m

$207

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 20 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 October.
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 $161). Flying from Cancún to Ontario in June 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 October 28, 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?

    Frontier and United Airlines can get you from Cancún to Ontario in just under 8h 07m. Your travel time can differ by up to 13h 43m. 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?

    $207 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on Volaris and United Airlines, with prices starting from $214 and $232, 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 $161). Flying from Cancún to Ontario in June 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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