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$194+ 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 8/7. Fares are subject to change and may not be available on all flights or dates of travel.
CUN — ONT
May 17 — May 241
Sat 5/17
Sat 5/24
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 May 12, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$408
(Kiwi.com)

One-way from

$194
(Trip.com)

Popular in

June

Cheapest in

October

Average price

$376
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. 11% potential increase in price ($62 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in May 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 May 12, 2025.

This Kiwi.com deal was found by Cheapflights users on 5/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/183:25 pmCUN - ONT
1 stop10h 25mMultiple Airlines
Mon 7/79:11 pmONT - CUN
1 stop21h 54mMultiple Airlines
Deal found 5/12$408
This Gotogate deal was found by Cheapflights users on 5/11. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/53:25 pmCUN - ONT
1 stop10h 25mFrontier
Sat 6/148:09 pmONT - CUN
1 stop11h 55mFrontier
Deal found 5/11$412
This United Airlines deal was found by Cheapflights users on 5/12. 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 6/187:51 amCUN - ONT
2 stops16h 54mUnited Airlines
Mon 7/76:39 pmONT - CUN
2 stops15h 23mUnited Airlines
Deal found 5/12$425
This American Airlines deal was found by Cheapflights users on 5/12. 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 6/1812:05 pmCUN - ONT
2 stops11h 33mAmerican Airlines
Mon 7/710:28 pmONT - CUN
1 stop10h 43mAmerican Airlines
Deal found 5/12$439
This CheapOair deal was found by Cheapflights users on 5/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/153:56 pmCUN - ONT
1 stop10h 03mVolaris
Tue 6/101:09 amONT - CUN
1 stop12h 36mVolaris
Deal found 5/11$529
This Southwest deal was found by Cheapflights users on 5/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/188:20 amCUN - ONT
2 stops9h 20mSouthwest
Mon 7/75:40 amONT - CUN
2 stops13h 20mSouthwest
Deal found 5/12$584
This Alaska Airlines deal was found by Cheapflights users on 5/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/234:10 pmCUN - ONT
2 stops19h 47mAlaska Airlines
Thu 10/306:55 pmONT - CUN
1 stop20h 10mAlaska Airlines
Deal found 5/11$630
This Aeromexico deal was found by Cheapflights users on 5/12. 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 9/1212:25 pmCUN - ONT
1 stop9h 17mAeromexico
Tue 9/2310:59 pmONT - CUN
2 stops14h 29mAeromexico
Deal found 5/12$760
This Avianca deal was found by Cheapflights users on 5/11. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/162:15 pmCUN - ONT
1 stop9h 40mAvianca
Thu 9/1811:25 pmONT - CUN
2 stops11h 45mAvianca
Deal found 5/11$863

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 May 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

Wed 6/18

3:25 pm-11:50 pm

1 stop10h 25m

Ontario

Mon 7/7

9:11 pm-9:05 pm

1 stop21h 54m

$408

CancúnOntario

CUN - ONT

CUNONT

Cancun

Thu 6/5

3:25 pm-11:50 pm

1 stop10h 25m

Ontario

Sat 6/14

8:09 pm-10:04 am

1 stop11h 55m

$412

CancúnOntario

CUN - ONT

CUNONT

Cancun

Wed 6/18

7:51 am-10:45 pm

2 stops16h 54m

Ontario

Mon 7/7

6:39 pm-12:02 pm

2 stops15h 23m

$425

CancúnOntario

CUN - ONT

CUNONT

Cancun

Wed 6/18

12:05 pm-9:38 pm

2 stops11h 33m

Ontario

Mon 7/7

10:28 pm-11:11 am

1 stop10h 43m

$439

CancúnOntario

CUN - ONT

CUNONT

Cancun

Wed 6/11

11:56 am-7:18 pm

1 stop9h 22m

Ontario

Wed 6/18

1:09 am-6:58 pm

1 stop15h 49m

$583

CancúnOntario

CUN - ONT

CUNONT

Cancun

Wed 6/18

8:20 am-3:40 pm

2 stops9h 20m

Ontario

Mon 7/7

5:40 am-9:00 pm

2 stops13h 20m

$584

CancúnOntario

CUN - ONT

CUNONT

Cancun

Thu 10/23

4:10 pm-9:57 am

2 stops19h 47m

Ontario

Thu 10/30

6:55 pm-5:05 pm

1 stop20h 10m

$630

CancúnOntario

CUN - ONT

CUNONT

Cancun

Fri 9/12

12:25 pm-7:42 pm

1 stop9h 17m

Ontario

Tue 9/23

10:59 pm-3:28 pm

2 stops14h 29m

$760

CancúnOntario

CUN - ONT

CUNONT

Cancun

Tue 9/16

2:15 pm-9:55 pm

1 stop9h 40m

Ontario

Thu 9/18

11:25 pm-1:10 pm

2 stops11h 45m

$863

CancúnOntario

CUN - ONT

CUNONT

Cancun

Thu 8/7

10:46 am-7:14 pm

1 stop10h 28m

$194

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/10

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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 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 Expedia the most. Expedia 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, August is the cheapest month in which you can book a flight from Cancún to Ontario (average of $246). Flying from Cancún to Ontario in March is currently the most expensive (average of $328). 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 May 12, 2025.

When flying from Cancún to Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated May 12, 2025.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,290 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Aeromexico
7.5
Good
1,699 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,724 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

  • What are the cheapest airlines flying from Cancún to Ontario round-trip?

    Our cheapest airline available from Cancún to Ontario is Frontier. Our recent data shows that you can find tickets from as low as $412 on this airline. Additional options worth looking into are United Airlines and American Airlines, starting at $425 and $439 round-trip. Frontier is currently priced 14% below the average price you’ll pay for this route.

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

    $194 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Volaris and American Airlines, with prices starting from $200 and $247, 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, August is the cheapest month in which you can book a flight from Cancún to Ontario (average of $246). Flying from Cancún to Ontario in March is currently the most expensive (average of $328). 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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