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Cheap flights from Ontario to Cancún from $113

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Cancún departing on 3/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Ontario to Cancún

Cheap round-trip flights

Multiple Airlines Logo
11:59 am - 12:27 pmONT-CUN
21h 28m2 stops
Multiple Airlines Logo
4:58 pm - 11:57 pmCUN-ONT
9h 59m1 stop
$345Multiple Airlines
Find Deal
Thu, Nov 13 - Thu, Nov 20
Delta Logo
6:00 am - 3:16 pmONT-CUN
7h 16m1 stop
Delta Logo
8:00 am - 10:22 pmCUN-ONT
17h 22m1 stop
$348Delta
Find Deal
Mon, Oct 27 - Wed, Nov 5
United Airlines Logo
5:05 am - 2:45 pmONT-CUN
7h 40m1 stop
United Airlines Logo
12:27 pm - 10:31 pmCUN-ONT
12h 04m1 stop
$356United Airlines
Find Deal
Sun, Oct 26 - Fri, Oct 31
United Airlines Logo
5:05 am - 2:45 pmONT-CUN
7h 40m1 stop
United Airlines Logo
11:28 am - 10:51 pmCUN-ONT
13h 23m2 stops
$360United Airlines
Find Deal
Sun, Oct 26 - Fri, Oct 31
American Airlines Logo
4:45 pm - 10:56 amONT-CUN
16h 11m2 stops
American Airlines Logo
12:20 pm - 10:42 pmCUN-ONT
12h 22m2 stops
$361American Airlines
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Mon, Sep 29 - Tue, Oct 7
American Airlines Logo
6:10 am - 5:57 pmONT-CUN
8h 47m1 stop
American Airlines Logo
3:32 pm - 9:01 amCUN-ONT
20h 29m1 stop
$362American Airlines
Find Deal
Tue, Nov 4 - Fri, Nov 7
Frontier Logo
7:04 am - 3:04 pmONT-CUN
30h 00m1 stop
Frontier Logo
11:16 am - 7:49 amCUN-ONT
22h 33m1 stop
$372Frontier
Find Deal
Sat, Oct 18 - Fri, Oct 24
Southwest Logo
5:25 am - 5:00 pmONT-CUN
8h 35m1 stop
Southwest Logo
11:45 am - 7:00 pmCUN-ONT
10h 15m2 stops
$384Southwest
Find Deal
Tue, Dec 2 - Sat, Dec 6
Southwest Logo
9:15 pm - 4:00 pmONT-CUN
15h 45m2 stops
Southwest Logo
8:40 am - 7:55 pmCUN-ONT
14h 15m2 stops
$410Southwest
Find Deal
Sun, Nov 23 - Wed, Nov 26
Frontier Logo
6:54 pm - 10:06 amONT-CUN
13h 12m2 stops
Frontier Logo
4:14 pm - 11:50 pmCUN-ONT
9h 36m1 stop
$424Frontier
Find Deal
Thu, Oct 16 - Sat, Oct 25

Delta flights from Ontario to Cancún

Our best Delta deals on Ontario to Cancún flight tickets
Delta
Oct 27
ONT6:00 amOntario
7h 16m
1 stop
CUN3:16 pmCancun
Nov 5
CUN8:00 amCancun
17h 22m
1 stop
ONT10:22 pmOntario
$348
Find similar
Delta
Oct 27
ONT6:00 amOntario
7h 16m
1 stop
CUN3:16 pmCancun
Nov 5
CUN8:00 amCancun
17h 22m
1 stop
ONT10:22 pmOntario
$350
Find similar
Delta
Sep 29
ONT6:00 amOntario
7h 15m
1 stop
CUN3:15 pmCancun
Oct 8
CUN4:16 pmCancun
9h 23m
1 stop
ONT11:39 pmOntario
$358
Find similar

United Airlines flights from Ontario to Cancún

Our best United Airlines deals on Ontario to Cancún flight tickets
United Airlines
Oct 26
ONT5:05 amOntario
7h 40m
1 stop
CUN2:45 pmCancun
Oct 31
CUN12:27 pmCancun
12h 04m
1 stop
ONT10:31 pmOntario
$356
Find similar
United Airlines
Oct 26
ONT5:05 amOntario
7h 40m
1 stop
CUN2:45 pmCancun
Oct 31
CUN11:28 amCancun
13h 23m
2 stops
ONT10:51 pmOntario
$360
Find similar
United Airlines
Oct 15
ONT6:00 amOntario
11h 20m
1 stop
CUN7:20 pmCancun
Oct 23
CUN3:01 pmCancun
8h 23m
1 stop
ONT9:24 pmOntario
$369
Find similar

momondo 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, momondo users made 832,500 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

Fly to

Route

Depart

Return

Price

OntarioCancún

ONT - CUN

ONTCUN

Ontario

Thu 11/13

11:59 am-12:27 pm

2 stops21h 28m

Cancun

Thu 11/20

4:58 pm-11:57 pm

1 stop9h 59m

$345

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

Sun 10/26

5:05 am-2:45 pm

1 stop7h 40m

Cancun

Fri 10/31

12:27 pm-10:31 pm

1 stop12h 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

Mon 9/29

4:45 pm-10:56 am

2 stops16h 11m

Cancun

Tue 10/7

12:20 pm-10:42 pm

2 stops12h 22m

$361

OntarioCancún

ONT - CUN

ONTCUN

Ontario

Tue 11/4

6:10 am-5:57 pm

1 stop8h 47m

Cancun

Fri 11/7

3:32 pm-9:01 am

1 stop20h 29m

$362

OntarioCancún

ONT - CUN

ONTCUN

Ontario

Sat 10/18

7:04 am-3:04 pm

1 stop30h 00m

Cancun

Fri 10/24

11:16 am-7:49 am

1 stop22h 33m

$372

OntarioCancún

ONT - CUN

ONTCUN

Ontario

Tue 12/2

5:25 am-5:00 pm

1 stop8h 35m

Cancun

Sat 12/6

11:45 am-7:00 pm

2 stops10h 15m

$384

OntarioCancún

ONT - CUN

ONTCUN

Ontario

Sun 11/23

9:15 pm-4:00 pm

2 stops15h 45m

Cancun

Wed 11/26

8:40 am-7:55 pm

2 stops14h 15m

$410

OntarioCancún

ONT - CUN

ONTCUN

Ontario

Thu 10/16

6:54 pm-10:06 am

2 stops13h 12m

Cancun

Sat 10/25

4:14 pm-11:50 pm

1 stop9h 36m

$424

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Cancún from

How to get the cheapest flight ticket from Ontario to Cancún

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Cancún?

If you don’t want to visit Cancún in February, then you should wait until July to fly from Ontario, when ticket prices are also cheap, with an average price of $494.

What is the cheapest day to depart on your flight to Cancún?

The cheapest day to depart from Ontario to Cancún is on a Tuesday when prices can be found for as low as $470. If your travel schedule is flexible, try to avoid departing on a Thursday because tickets tend to average around $576. These prices are subject to change though, so be sure to set up a Price Alert for flights to Cancún.

What is the cheapest time of day to depart on your flight to Cancún?

Our most recent data shows that the best time of day to fly to Cancún is in the afternoon. Flights from Ontario to Cancún during this time can be as low as $270. Flights to Cancún are more costly in the evening, with an average ticket price of $561. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight to Cancún?

You are more likely to see cheaper flights to Cancún from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Cancún for around $534 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Cancún from Ontario for as low as $437 on momondo.

How have Ontario to Cancún flight prices changed over time?

As of September 2025, prices for Ontario to Cancún flights are approximately 43% more expensive when compared to flights at the same time last year.

When to book flights from Ontario to Cancún

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Cancún according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Cancún (ONT to CUN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Cancún

Direct flights

None
There are no direct flights from Ontario to Cancún. There are no popular flight routes from Ontario to Cancún.
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  • How far is Ontario to Cancun by plane?

    The straight-line distance from Ontario to Cancun is 2074.6 mi. By plane, this route typically takes 6h 20m.

  • When did momondo last update prices for flights from Ontario Airport to Cancun Airport?

    Prices for flights from Ontario Airport to Cancun Airport were last updated today.

  • How many operators does momondo search for flights from Ontario Airport to Cancun Airport?

  • How old do you have to be to fly from Ontario Airport to Cancun Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Cancun Airport.

  • What documentation or ID do you need to fly to Cancun Airport?

    The travel and health documents required for your trip to Cancun Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Cancun Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Ontario to Cancún?

Best airlines flying from Ontario to Cancún

Compare and see reviews for airlines that fly from Ontario to Cancún with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $243Free CancellationRating
5.8
3,173 reviews
Search Frontier flights
Alaska AirlinesPriceFrom $286Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
VolarisPriceFrom $339Free CancellationRating
6.6
1,154 reviews
Search Volaris flights
SouthwestPriceFrom $381Free CancellationRating
8.0
4,242 reviews
Search Southwest flights
United AirlinesPriceFrom $401Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
American AirlinesPriceFrom $468Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Traveling to a place near Cancún?

Book flights to Cancún if you plan to visit one of these locations
Playa del Carmen
Isla Mujeres
Holbox
Puerto Morelos
Akumal
Puerto Aventuras
Valladolid
Punta Sam

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Cancún?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Cancún from Ontario.

Can I find flights from Ontario to Cancún with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Ontario to Cancún flights to just show those with flexible booking policies.

How can momondo help me find flights from Ontario to Cancún?

momondo provides multiple filters to help you find the best flight to Cancún from Ontario. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Ontario to Cancún right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Ontario to Cancún flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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