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$190+ 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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
CUN — ONT
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$322
(Priceline)

One-way from

$190
(Delta)

Popular in

August

Cheapest in

October

Average price

$427
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. 2% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This United Airlines deal was found by Cheapflights users on 6/12. 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.
Thu 9/1812:20 pmCUN - ONT
1 stop12h 10mUnited Airlines
Mon 9/226:00 amONT - CUN
1 stop8h 12mUnited Airlines
Deal found 6/12$309
This Priceline deal was found by Cheapflights users on 6/10. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/303:25 pmCUN - ONT
1 stop10h 25mFrontier
Tue 8/512:59 amONT - CUN
1 stop13h 21mFrontier
Deal found 6/10$322
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/302:11 pmCUN - ONT
2 stops11h 31mDelta
Wed 8/610:05 pmONT - CUN
2 stops13h 10mDelta
Deal found 6/10$436
This Booking.com deal was found by Cheapflights users on 6/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/236:20 pmCUN - ONT
2 stops29h 35mMultiple Airlines
Wed 7/3012:59 amONT - CUN
1 stop13h 21mMultiple Airlines
Deal found 6/12$512
This Mytrip deal was found by Cheapflights users on 6/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/68:00 amCUN - ONT
1 stop13h 21mVolaris
Fri 9/191:09 amONT - CUN
1 stop7h 54mVolaris
Deal found 6/10$599
This Kissandfly.com deal was found by Cheapflights users on 6/10. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/114:10 pmCUN - ONT
1 stop7h 28mBritish Airways
Sat 7/1910:53 amONT - CUN
1 stop7h 07mBritish Airways
Deal found 6/10$769
This Alaska Airlines deal was found by Cheapflights users on 6/11. 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.
Mon 7/284:25 pmCUN - ONT
3 stops20h 40mAlaska Airlines
Mon 8/47:30 amONT - CUN
2 stops29h 45mAlaska Airlines
Deal found 6/11$794
This Avianca deal was found by Cheapflights users on 6/10. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/192:15 pmCUN - ONT
1 stop9h 40mAvianca
Sun 7/2711:25 pmONT - CUN
2 stops11h 45mAvianca
Deal found 6/10$822
This Aeromexico deal was found by Cheapflights users on 6/12. 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.
Wed 8/612:35 pmCUN - ONT
1 stop8h 45mAeromexico
Wed 8/610:05 pmONT - CUN
1 stop12h 45mAeromexico
Deal found 6/12$865
This JetBlue deal was found by Cheapflights users on 6/11. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/1411:20 amCUN - ONT
1 stop12h 39mJetBlue
Sat 6/1411:59 pmONT - CUN
1 stop14h 36mJetBlue
Deal found 6/11$1,062
This Air Canada deal was found by Cheapflights users on 6/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/138:45 pmCUN - ONT
2 stops17h 46mAir Canada
Sat 6/146:41 pmONT - CUN
2 stops22h 59mAir Canada
Deal found 6/11$1,340
This LATAM Airlines deal was found by Cheapflights users on 6/11. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/101:20 amCUN - ONT
2 stops24h 21mLATAM Airlines
Tue 11/1812:00 pmONT - CUN
2 stops25h 20mLATAM Airlines
Deal found 6/11$2,153

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 June 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

Thu 9/18

12:20 pm-10:30 pm

1 stop12h 10m

Ontario

Mon 9/22

6:00 am-4:12 pm

1 stop8h 12m

$309

CancúnOntario

CUN - ONT

CUNONT

Cancun

Wed 7/30

3:25 pm-11:50 pm

1 stop10h 25m

Ontario

Tue 8/5

12:59 am-4:20 pm

1 stop13h 21m

$322

CancúnOntario

CUN - ONT

CUNONT

Cancun

Wed 7/30

2:11 pm-11:42 pm

2 stops11h 31m

Ontario

Wed 8/6

10:05 pm-1:15 pm

2 stops13h 10m

$436

CancúnOntario

CUN - ONT

CUNONT

Cancun

Wed 7/23

6:20 pm-9:55 pm

2 stops29h 35m

Ontario

Wed 7/30

12:59 am-4:20 pm

1 stop13h 21m

$512

CancúnOntario

CUN - ONT

CUNONT

Cancun

Sat 9/6

8:00 am-7:21 pm

1 stop13h 21m

Ontario

Fri 9/19

1:09 am-11:03 am

1 stop7h 54m

$599

CancúnOntario

CUN - ONT

CUNONT

Cancun

Fri 7/11

4:10 pm-9:38 pm

1 stop7h 28m

Ontario

Sat 7/19

10:53 am-8:00 pm

1 stop7h 07m

$769

CancúnOntario

CUN - ONT

CUNONT

Cancun

Mon 7/28

4:25 pm-11:05 am

3 stops20h 40m

Ontario

Mon 8/4

7:30 am-3:15 pm

2 stops29h 45m

$794

CancúnOntario

CUN - ONT

CUNONT

Cancun

Sat 7/19

2:15 pm-9:55 pm

1 stop9h 40m

Ontario

Sun 7/27

11:25 pm-1:10 pm

2 stops11h 45m

$822

CancúnOntario

CUN - ONT

CUNONT

Cancun

Wed 8/6

12:35 pm-7:20 pm

1 stop8h 45m

Ontario

Wed 8/6

10:05 pm-12:50 pm

1 stop12h 45m

$865

CancúnOntario

CUN - ONT

CUNONT

Cancun

Mon 11/10

1:20 am-10:41 pm

2 stops24h 21m

Ontario

Tue 11/18

12:00 pm-4:20 pm

2 stops25h 20m

$2,153

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 21 results
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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 June 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 June 12, 2025.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

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

Food

7.1

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
LATAM Airlines
7.5
Good
1,785 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

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
1,706 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

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 $322 on this airline. Additional options worth looking into are United Airlines and Delta, starting at $336 and $436 round-trip. Frontier is currently priced 29% below the average price you’ll pay for this route.

  • 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 Frontier, with prices starting from $192 and $194, 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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