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$145+ 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 11/28. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — CUN
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
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 September 17, 2025.

Round-trip from

$345
(Kiwi.com)

One-way from

$145
(CheapOair)

Popular in

January

Cheapest in

February

Average price

$499
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. 1% potential increase in price ($8 potential increase over avg. RT price).
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Cheapest flight prices on average. 0% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 17, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/15. 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 11/1311:59 amONT - CUN
2 stops21h 28mMultiple Airlines
Thu 11/204:58 pmCUN - ONT
1 stop9h 59mMultiple Airlines
Deal found 9/15$345
This Delta deal was found by Cheapflights users on 9/16. 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.
Mon 10/276:00 amONT - CUN
1 stop7h 16mDelta
Wed 11/58:00 amCUN - ONT
1 stop17h 22mDelta
Deal found 9/16$348
This United Airlines deal was found by Cheapflights users on 9/16. 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 10/265:05 amONT - CUN
1 stop7h 40mUnited Airlines
Fri 10/3112:27 pmCUN - ONT
1 stop12h 04mUnited Airlines
Deal found 9/16$356
This Delta deal was found by Cheapflights users on 9/15. 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.
Mon 9/296:00 amONT - CUN
1 stop7h 15mDelta
Wed 10/84:16 pmCUN - ONT
1 stop9h 23mDelta
Deal found 9/15$358
This American Airlines deal was found by Cheapflights users on 9/15. 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 9/294:45 pmONT - CUN
2 stops16h 11mAmerican Airlines
Tue 10/712:20 pmCUN - ONT
2 stops12h 22mAmerican Airlines
Deal found 9/15$361
This American Airlines deal was found by Cheapflights users on 9/14. 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.
Tue 11/46:10 amONT - CUN
1 stop8h 47mAmerican Airlines
Fri 11/73:32 pmCUN - ONT
1 stop20h 29mAmerican Airlines
Deal found 9/14$362
This Delta deal was found by Cheapflights users on 9/15. 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.
Mon 11/1710:25 pmONT - CUN
1 stop12h 30mDelta
Tue 11/258:00 amCUN - ONT
1 stop18h 04mDelta
Deal found 9/15$366
This CheapOair deal was found by Cheapflights users on 9/16. 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.
Mon 10/201:09 amONT - CUN
1 stop13h 49mVolaris
Fri 10/248:00 amCUN - ONT
1 stop13h 21mVolaris
Deal found 9/16$367
This United Airlines deal was found by Cheapflights users on 9/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/156:00 amONT - CUN
1 stop11h 20mUnited Airlines
Thu 10/233:01 pmCUN - ONT
1 stop8h 23mUnited Airlines
Deal found 9/17$369

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 September 17, 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

Mon 10/27

6:00 am-3:16 pm

1 stop7h 16m

Cancun

Wed 11/5

8:00 am-10:22 pm

1 stop17h 22m

$348

OntarioCancún

ONT - CUN

ONTCUN

Ontario

Mon 9/29

10:00 pm-11:25 am

1 stop11h 25m

Cancun

Thu 10/16

4:16 pm-11:39 pm

1 stop9h 23m

$348

OntarioCancún

ONT - CUN

ONTCUN

Ontario

Tue 11/18

7:05 am-9:20 pm

1 stop11h 15m

Cancun

Wed 11/26

8:00 am-11:04 pm

1 stop18h 04m

$356

OntarioCancún

ONT - CUN

ONTCUN

Ontario

Sun 10/26

5:05 am-2:45 pm

1 stop7h 40m

Cancun

Fri 10/31

11:28 am-10:51 pm

2 stops13h 23m

$360

OntarioCancún

ONT - CUN

ONTCUN

Ontario

Tue 11/18

7:05 am-9:20 pm

1 stop11h 15m

Cancun

Tue 11/25

8:00 am-7:37 pm

1 stop14h 37m

$366

OntarioCancún

ONT - CUN

ONTCUN

Ontario

Mon 11/17

10:25 pm-1:55 pm

1 stop12h 30m

Cancun

Tue 11/25

8:00 am-7:37 pm

1 stop14h 37m

$366

OntarioCancún

ONT - CUN

ONTCUN

Ontario

Wed 10/15

6:00 am-7:20 pm

1 stop11h 20m

Cancun

Thu 10/23

3:01 pm-9:24 pm

1 stop8h 23m

$369

OntarioCancún

ONT - CUN

ONTCUN

Ontario

Mon 11/17

10:25 pm-10:50 am

1 stop9h 25m

Cancun

Mon 11/24

5:20 pm-11:52 pm

1 stop9h 32m

$370

OntarioCancún

ONT - CUN

ONTCUN

Ontario

Tue 11/18

6:00 am-9:20 pm

2 stops12h 20m

Cancun

Mon 11/24

8:00 am-11:04 pm

1 stop18h 04m

$374

OntarioCancún

ONT - CUN

ONTCUN

Ontario

Sat 11/29

1:02 am-3:28 pm

1 stop11h 26m

$156

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 19 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 September 12, 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 September 17, 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.

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 September 17, 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
4,242 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

8.0

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
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

8.0

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
8,926 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

8.0

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
4,242 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

8.0

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
1,154 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

8.0

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
3,173 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

8.0

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 7h 16m. Delta provides one of the quickest options available for as low as $348. The distance from Ontario to Cancún is about 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 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 Volaris - these airlines can fly you to your destination from $286 and $339, 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 6 airlines flying from Ontario to Cancún

Discover the top 6 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$243Average$396FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$286Average$547FlexibilityNo cancel feeOn-time75%
VolarisCheapest$339Average$447FlexibilityNo cancel feeOn-time79%
SouthwestCheapest$381Average$615FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$401Average$539FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$468Average$572FlexibilityNo cancel feeOn-time71%

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