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$171+ 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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
CUN — ONT
ago. 3 — ago. 101
dom. 8/3
dom. 8/10
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 julio 29, 2025.

Round-trip from

$307
(United Airlines)

One-way from

$171
(Trip.com)

Popular in

August

Cheapest in

June

Average price

$480
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. 10% potential increase in price ($55 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in July 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 julio 29, 2025.

This United Airlines deal was found by Cheapflights users on 7/29. 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.
vie. 8/222:03 pmCUN - ONT
1 stop9h 22mUnited Airlines
mié. 9/36:00 amONT - CUN
1 stop8h 12mUnited Airlines
Deal found 7/29$307
This American Airlines deal was found by Cheapflights users on 7/27. 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.
vie. 8/157:45 amCUN - ONT
1 stop7h 54mAmerican Airlines
dom. 8/246:17 amONT - CUN
1 stop6h 48mAmerican Airlines
Deal found 7/27$351
This Booking.com deal was found by Cheapflights users on 7/27. 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.
sáb. 10/183:36 pmCUN - ONT
1 stop29h 04mFrontier
jue. 10/2311:42 amONT - CUN
1 stop20h 03mFrontier
Deal found 7/27$356
This CheapOair deal was found by Cheapflights users on 7/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/148:00 amCUN - ONT
1 stop13h 18mVolaris
mié. 2/111:02 amONT - CUN
1 stop11h 26mVolaris
Deal found 7/28$357
This CheapOair deal was found by Cheapflights users on 7/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/75:37 pmCUN - ONT
1 stop26h 50mMultiple Airlines
mié. 2/111:02 amONT - CUN
1 stop11h 26mMultiple Airlines
Deal found 7/28$406
This Alaska Airlines deal was found by Cheapflights users on 7/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/274:00 pmCUN - ONT
1 stop21h 05mAlaska Airlines
vie. 10/317:20 amONT - CUN
2 stops31h 25mAlaska Airlines
Deal found 7/28$674
This Priceline deal was found by Cheapflights users on 7/27. 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.
sáb. 8/302:15 pmCUN - ONT
1 stop9h 40mAvianca
sáb. 9/611:25 pmONT - CUN
2 stops11h 45mAvianca
Deal found 7/27$815

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 julio 29, 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

vie. 8/22

2:03 pm-9:25 pm

1 stop9h 22m

Ontario

mié. 9/3

6:00 am-4:12 pm

1 stop8h 12m

$307

CancúnOntario

CUN - ONT

CUNONT

Cancun

vie. 8/15

7:45 am-1:39 pm

1 stop7h 54m

Ontario

dom. 8/24

6:17 am-3:05 pm

1 stop6h 48m

$351

CancúnOntario

CUN - ONT

CUNONT

Cancun

sáb. 10/18

3:36 pm-6:40 pm

1 stop29h 04m

Ontario

jue. 10/23

11:42 am-9:45 am

1 stop20h 03m

$356

CancúnOntario

CUN - ONT

CUNONT

Cancun

jue. 8/14

8:00 am-7:18 pm

1 stop13h 18m

Ontario

mié. 2/11

1:02 am-3:28 pm

1 stop11h 26m

$357

CancúnOntario

CUN - ONT

CUNONT

Cancun

lun. 10/27

8:00 am-6:19 pm

2 stops12h 19m

Ontario

jue. 10/30

1:09 am-2:16 pm

1 stop11h 07m

$587

CancúnOntario

CUN - ONT

CUNONT

Cancun

mar. 9/23

11:20 am-9:29 pm

1 stop12h 09m

Ontario

jue. 9/25

10:53 pm-1:15 pm

1 stop12h 22m

$603

CancúnOntario

CUN - ONT

CUNONT

Cancun

lun. 10/27

4:00 pm-11:05 am

1 stop21h 05m

Ontario

vie. 10/31

7:20 am-4:45 pm

2 stops31h 25m

$674

CancúnOntario

CUN - ONT

CUNONT

Cancun

sáb. 8/30

2:15 pm-9:55 pm

1 stop9h 40m

Ontario

sáb. 9/6

11:25 pm-1:10 pm

2 stops11h 45m

$815

CancúnOntario

CUN - ONT

CUNONT

Cancun

vie. 8/22

3:45 pm-10:35 am

2 stops20h 50m

Ontario

mié. 9/3

11:45 am-2:15 pm

2 stops24h 30m

$2,579

CancúnOntario

CUN - ONT

CUNONT

Cancun

vie. 10/3

8:00 am-7:21 pm

1 stop13h 21m

$171

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 16 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 julio 29, 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.

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 julio 29, 2025.
Read through reviews of airlines operating flights from Cancún to Ontario, such as Alaska Airlines, Delta, and LATAM Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

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

Boarding

8.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

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
7,977 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

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
1,821 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

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
1,720 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

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
8,899 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

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 United Airlines. Our recent data shows that you can find tickets from as low as $307 on this airline. Additional options worth looking into are American Airlines and Frontier, starting at $351 and $356 round-trip. United Airlines is currently priced 31% below the average price you’ll pay for this route.

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

    $171 is the cheapest one-way deal found within the past few days, from Volaris. You may also be able to find cheap deals on Aeromexico and American Airlines, with prices starting from $185 and $190, 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.

See more FAQs

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