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$139+ Cheap flights from Ontario (ONT) to Cancún (CUN)

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 10/13. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — CUN
Aug 24 — Aug 311
Sun 8/24
Sun 8/31
1 adult, Economy
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Cheapflights Tip: The best prices from Ontario to Cancun are usually found in February or July, booked 69 days in advance, depart on a Tuesday or Monday and return on a Monday

Cheap flight deals from Ontario to Cancún

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Cancún (CUN). 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 August 19, 2025.

Round-trip from

$333
(Kiwi.com)

One-way from

$139
(Mytrip)

Popular in

October

Cheapest in

February

Average price

$542
From Ontario to Cancun
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One-way flight from Ontario to Cancun
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Highest demand for flights based on searches. 3% potential increase in price ($21 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Ontario to Cancún

Cheapest flights from Ontario to Cancún
Explore the most affordable flight options available from Ontario to Cancún. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 19, 2025.

This Kiwi.com deal was found by Cheapflights users on 8/17. 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.
Sun 9/217:15 pmONT - CUN
1 stop11h 40mMultiple Airlines
Wed 9/249:54 amCUN - ONT
1 stop27h 39mMultiple Airlines
Deal found 8/17$333
This Aeromexico deal was found by Cheapflights users on 8/18. 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.
Mon 9/296:00 amONT - CUN
1 stop7h 15mAeromexico
Thu 10/212:35 pmCUN - ONT
1 stop8h 40mAeromexico
Deal found 8/18$336
This American Airlines deal was found by Cheapflights users on 8/17. 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.
Mon 9/16:17 amONT - CUN
1 stop6h 48mAmerican Airlines
Wed 9/107:50 amCUN - ONT
1 stop8h 04mAmerican Airlines
Deal found 8/17$348
This Kiwi.com deal was found by Cheapflights users on 8/18. 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.
Sat 9/278:59 pmONT - CUN
2 stops27h 34mMultiple Airlines
Sat 10/412:52 pmCUN - ONT
1 stop28h 32mMultiple Airlines
Deal found 8/18$349
This Kiwi.com deal was found by Cheapflights users on 8/17. 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.
Thu 9/189:11 pmONT - CUN
1 stop22h 38mMultiple Airlines
Thu 9/259:54 amCUN - ONT
1 stop7h 35mMultiple Airlines
Deal found 8/17$355
This Delta deal was found by Cheapflights users on 8/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/2610:00 pmONT - CUN
1 stop12h 48mDelta
Fri 10/316:00 amCUN - ONT
2 stops15h 19mDelta
Deal found 8/18$356
This American Airlines deal was found by Cheapflights users on 8/17. 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.
Sun 10/2610:29 pmONT - CUN
1 stop9h 01mAmerican Airlines
Fri 10/314:25 pmCUN - ONT
2 stops19h 42mAmerican Airlines
Deal found 8/17$360
This American Airlines deal was found by Cheapflights users on 8/18. 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.
Mon 10/610:29 pmONT - CUN
1 stop14h 51mAmerican Airlines
Tue 10/144:10 pmCUN - ONT
1 stop21h 51mAmerican Airlines
Deal found 8/18$362
This Kiwi.com deal was found by Cheapflights users on 8/18. 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.
Thu 10/27:30 pmONT - CUN
2 stops34h 41mMultiple Airlines
Sun 10/59:52 amCUN - ONT
1 stop10h 23mMultiple Airlines
Deal found 8/18$372
This Kiwi.com deal was found by Cheapflights users on 8/18. 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.
Thu 11/137:39 amONT - CUN
1 stop24h 03mMultiple Airlines
Sun 11/1610:15 amCUN - ONT
2 stops35h 34mMultiple Airlines
Deal found 8/18$377

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Cancún 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 August 19, 2025.
Use the filters below to find and compare flights from Ontario to Cancún that are best for you.

Fly from

Ontario

Fly to

Cancún

Route

Depart

Return

Price

OntarioCancún

ONT - CUN

ONTCUN

Ontario

Sun 9/21

7:15 pm-8:55 am

1 stop11h 40m

Cancun

Wed 9/24

9:54 am-11:33 am

1 stop27h 39m

$333

OntarioCancún

ONT - CUN

ONTCUN

Ontario

Mon 9/29

6:00 am-3:15 pm

1 stop7h 15m

Cancun

Thu 10/2

12:35 pm-7:15 pm

1 stop8h 40m

$336

OntarioCancún

ONT - CUN

ONTCUN

Ontario

Mon 9/1

6:17 am-3:05 pm

1 stop6h 48m

Cancun

Wed 9/10

7:50 am-1:54 pm

1 stop8h 04m

$348

OntarioCancún

ONT - CUN

ONTCUN

Ontario

Thu 10/2

4:34 pm-8:55 am

1 stop14h 21m

Cancun

Sun 10/5

9:52 am-3:24 pm

1 stop7h 32m

$349

OntarioCancún

ONT - CUN

ONTCUN

Ontario

Sat 9/27

8:59 pm-2:33 am

2 stops27h 34m

Cancun

Sat 10/4

12:52 pm-3:24 pm

1 stop28h 32m

$349

OntarioCancún

ONT - CUN

ONTCUN

Ontario

Thu 9/18

9:11 pm-9:49 pm

1 stop22h 38m

Cancun

Thu 9/25

9:54 am-3:29 pm

1 stop7h 35m

$355

OntarioCancún

ONT - CUN

ONTCUN

Ontario

Sun 10/26

10:00 pm-11:15 am

1 stop11h 15m

Cancun

Fri 10/31

6:00 am-7:19 pm

2 stops15h 19m

$356

OntarioCancún

ONT - CUN

ONTCUN

Ontario

Sat 10/4

10:35 pm-1:50 pm

1 stop13h 15m

Cancun

Tue 10/7

11:00 am-10:42 pm

1 stop13h 42m

$356

OntarioCancún

ONT - CUN

ONTCUN

Ontario

Mon 10/13

12:40 pm-6:49 am

2 stops16h 09m

$139

OntarioCancún

ONT - CUN

ONTCUN

Ontario

Mon 9/29

12:40 pm-10:03 am

2 stops19h 23m

$147

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/16

Showing 1-10 of 15 results
1
2

Best time to book a flight from Ontario to Cancún

Have a flexible travel schedule? Discover the best time to fly to Cancún from Ontario 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 Ontario to Cancún

How far ahead should I book a flight from Ontario to Cancún?

Use this chart to determine the optimal time to book a round-trip flight from Ontario to Cancún. Price data was last updated on August 8, 2025.

The price you pay for your flight from Ontario to Cancún may vary depending on when you book. For the best chance of a lower fare, look to book 69 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from Ontario to Cancún (average of $360). Flying from Ontario to Cancún in March is currently the most expensive (average of $492). 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 ONT to CUN?

Find hourly flight availability from Ontario to Cancún. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 19, 2025.

When flying from Ontario to Cancún, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 44% versus a flight in the morning.

What is the cheapest day to fly from Ontario to Cancún?

Use this chart to determine the cheapest time to fly round-trip from Ontario to Cancún. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Ontario to Cancún flight should consider departing on Friday afternoons when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What’s the top layover airport for flights from Ontario to Cancún?

Share of 1-stop round-trip flights from Ontario to Cancún chosen by Cheapflights users in the past 12 months, using the same layover each way.

Houston (IAH) – chosen by Cheapflights users on 57% of 1-stop itineraries from Ontario to Cancún on Cheapflights.

What’s the cheapest layover airport for flights from Ontario to Cancún?

Average round-trip fare for 1-stop flights from Ontario to Cancún, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Denver (DEN) is the most affordable 1-stop option, with an average round-trip price of $410.

What’s the fastest layover option from Ontario to Cancún?

Shortest average travel time for 1-stop one-way flights from Ontario to Cancún, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Houston (IAH) have the shortest average one-way travel time for 1-stop routes: 6h 19m.

Which airport typically offers the quickest layover for flights from Ontario to Cancún?

Average layover duration for 1-stop one-way flights from Ontario to Cancún, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Houston (IAH) offer the fastest connection on this route, with an average layover time of 1h 17m.

Reviews of airlines servicing Cancún

Get insights into the airlines that provide service to Cancún. 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 Cancún. Reviews last updated August 19, 2025.
Read through reviews of airlines operating flights from Ontario to Cancún, such as Southwest, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,246 reviews

Overall

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,246 reviews
Southwest
8.0
Very good
4,246 reviews

Overall

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,922 reviews
Southwest
8.0
Very good
4,246 reviews

Overall

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,246 reviews

Overall

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Volaris
6.6
Okay
1,162 reviews
Southwest
8.0
Very good
4,246 reviews

Overall

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,211 reviews
Southwest
8.0
Very good
4,246 reviews

Overall

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Cancún. 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 Ontario to Cancún?

    A quick flight from Ontario to Cancún can take about 11h 15m. Delta provides one of the quickest options available for as low as $356. The distance from Ontario to Cancún is about 2073 mi.

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

    Currently priced at $243, Frontier will fly you from Ontario to Cancún and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Alaska Airlines and Viva - these airlines can fly you to your destination from $286 and $286, respectively. Frontier is currently priced 54% below the average price you’ll pay for this route.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Cancún 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 Ontario to Cancún?

    Currently, January is the cheapest month in which you can book a flight from Ontario to Cancún (average of $360). Flying from Ontario to Cancún in March is currently the most expensive (average of $492). 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.

See more FAQs

Traveling to a place near Cancún?

Book flights to Cancún if you plan to visit one of these locations
Puerto Aventuras
Holbox
Punta Sam

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Top 7 airlines flying from Ontario to Cancún

Discover the top 7 airlines that operate flights from Ontario to Cancún. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 19, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$243Average$392FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$286Average$547FlexibilityNo cancel feeOn-time75%
VivaCheapest$286Average$434FlexibilityNo cancel feeOn-timeN/A
VolarisCheapest$339Average$441FlexibilityNo cancel feeOn-time79%
SouthwestCheapest$381Average$613FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$405Average$554FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$468Average$579FlexibilityNo cancel feeOn-time71%

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