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Cheap flights from Seattle to Cancún from C$ 256

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Cancún departing on 5/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Seattle to Cancún

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
7:10 a.m. - 4:10 p.m.
SEA
-
CUN
6h 00mdirect
Delta Logo
5:20 p.m. - 12:20 a.m.
CUN
-
SEA
10h 00m1 stop
C$ 537Delta
Wed, 31 Dec - Sun, 4 Jan
Volaris Logo
10:00 p.m. - 3:28 p.m.
SEA
-
CUN
15h 28m1 stop
Volaris Logo
10:53 a.m. - 7:49 p.m.
CUN
-
SEA
10h 56m1 stop
C$ 540Volaris
Wed, 18 Mar - Wed, 1 Apr
Volaris Logo
10:00 p.m. - 12:05 p.m.
SEA
-
CUN
12h 05m1 stop
Volaris Logo
10:39 a.m. - 7:48 p.m.
CUN
-
SEA
11h 09m1 stop
C$ 543Volaris
Sun, 15 Mar - Wed, 25 Mar
Delta Logo
5:25 a.m. - 4:20 p.m.
SEA
-
CUN
7h 55m1 stop
Delta Logo
3:45 p.m. - 11:22 p.m.
CUN
-
SEA
10h 37m1 stop
C$ 544Delta
Wed, 31 Dec - Mon, 5 Jan
Volaris Logo
10:00 p.m. - 12:05 p.m.
SEA
-
CUN
12h 05m1 stop
Volaris Logo
10:39 a.m. - 7:48 p.m.
CUN
-
SEA
11h 09m1 stop
C$ 546Volaris
Sat, 14 Mar - Tue, 24 Mar
Delta Logo
1:35 p.m. - 12:03 p.m.
SEA
-
CUN
19h 28m2 stops
Delta Logo
5:20 p.m. - 9:25 a.m.
CUN
-
SEA
19h 05m1 stop
C$ 559Delta
Wed, 31 Dec - Sun, 4 Jan
Multiple Airlines Logo
9:14 a.m. - 5:05 p.m.
SEA
-
CUN
5h 51mdirect
Multiple Airlines Logo
10:39 a.m. - 7:48 p.m.
CUN
-
SEA
11h 09m1 stop
C$ 561Multiple Airlines
Fri, 13 Mar - Thu, 26 Mar
Multiple Airlines Logo
6:24 p.m. - 2:50 p.m.
SEA
-
CUN
18h 26m1 stop
Multiple Airlines Logo
10:03 a.m. - 7:16 p.m.
CUN
-
SEA
11h 13m1 stop
C$ 562Multiple Airlines
Tue, 17 Mar - Tue, 31 Mar
Delta Logo
7:10 a.m. - 4:02 p.m.
SEA
-
CUN
5h 52mdirect
Delta Logo
5:12 p.m. - 8:55 p.m.
CUN
-
SEA
6h 43mdirect
C$ 564Delta
Sat, 28 Feb - Fri, 6 Mar
Delta Logo
5:30 a.m. - 3:10 p.m.
SEA
-
CUN
7h 40m1 stop
Delta Logo
4:25 p.m. - 9:15 p.m.
CUN
-
SEA
6h 50mdirect
C$ 569Delta
Thu, 12 Mar - Tue, 17 Mar

Delta flights from Seattle to Cancún

Our best Delta deals on Seattle to Cancún flight tickets
Delta
31 Dec
SEA7:10 a.m.Seattle/Tacoma Intl
6h 00m
CUN4:10 p.m.Cancun
4 Jan
CUN5:20 p.m.Cancun
10h 00m
1 stop
SEA12:20 a.m.Seattle/Tacoma Intl
C$ 537
Find similar
Delta
31 Dec
SEA8:15 a.m.Seattle/Tacoma Intl
10h 05m
1 stop
CUN9:20 p.m.Cancun
4 Jan
CUN5:20 p.m.Cancun
10h 00m
1 stop
SEA12:20 a.m.Seattle/Tacoma Intl
C$ 544
Find similar
Delta
31 Dec
SEA1:35 p.m.Seattle/Tacoma Intl
19h 28m
2 stops
CUN12:03 p.m.Cancun
5 Jan
CUN5:05 p.m.Cancun
9h 17m
1 stop
SEA11:22 p.m.Seattle/Tacoma Intl
C$ 559
Find similar

United Airlines flights from Seattle to Cancún

Our best United Airlines deals on Seattle to Cancún flight tickets
United Airlines
31 Dec
SEA5:02 a.m.Seattle/Tacoma Intl
7h 43m
1 stop
CUN3:45 p.m.Cancun
12 Jan
CUN8:39 a.m.Cancun
15h 33m
3 stops
SEA9:12 p.m.Seattle/Tacoma Intl
C$ 812
Find similar
United Airlines
28 Dec
SEA11:59 p.m.Seattle/Tacoma Intl
8h 26m
1 stop
CUN11:25 a.m.Cancun
7 Mar
CUN5:50 p.m.Cancun
10h 09m
1 stop
SEA12:59 a.m.Seattle/Tacoma Intl
C$ 821
Find similar
United Airlines
29 Dec
SEA5:54 p.m.Seattle/Tacoma Intl
10h 19m
1 stop
CUN7:13 a.m.Cancun
1 Jan
CUN6:30 a.m.Cancun
21h 04m
1 stop
SEA12:34 a.m.Seattle/Tacoma Intl
C$ 823
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle 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 96,600 searches. Data last updated 18 December 2025.
Use the filters below to find and compare flights from Seattle to Cancún that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Wed 31/12

7:10 a.m.-4:10 p.m.

Nonstop6h 00m

Cancun

Sun 4/1

5:20 p.m.-12:20 a.m.

1 stop10h 00m

C$ 537

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Wed 18/3

10:00 p.m.-3:28 p.m.

1 stop15h 28m

Cancun

Wed 1/4

10:53 a.m.-7:49 p.m.

1 stop10h 56m

C$ 540

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Sun 15/3

10:00 p.m.-12:05 p.m.

1 stop12h 05m

Cancun

Wed 25/3

10:39 a.m.-7:48 p.m.

1 stop11h 09m

C$ 543

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Wed 31/12

5:25 a.m.-4:20 p.m.

1 stop7h 55m

Cancun

Mon 5/1

3:45 p.m.-11:22 p.m.

1 stop10h 37m

C$ 544

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Sat 14/3

10:00 p.m.-12:05 p.m.

1 stop12h 05m

Cancun

Tue 24/3

10:39 a.m.-7:48 p.m.

1 stop11h 09m

C$ 546

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Wed 31/12

1:35 p.m.-12:03 p.m.

2 stops19h 28m

Cancun

Sun 4/1

5:20 p.m.-9:25 a.m.

1 stop19h 05m

C$ 559

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Fri 13/3

9:14 a.m.-5:05 p.m.

Nonstop5h 51m

Cancun

Thu 26/3

10:39 a.m.-7:48 p.m.

1 stop11h 09m

C$ 561

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Tue 17/3

6:24 p.m.-2:50 p.m.

1 stop18h 26m

Cancun

Tue 31/3

10:03 a.m.-7:16 p.m.

1 stop11h 13m

C$ 562

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Sat 28/2

7:10 a.m.-4:02 p.m.

Nonstop5h 52m

Cancun

Fri 6/3

5:12 p.m.-8:55 p.m.

Nonstop6h 43m

C$ 564

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Thu 12/3

5:30 a.m.-3:10 p.m.

1 stop7h 40m

Cancun

Tue 17/3

4:25 p.m.-9:15 p.m.

Nonstop6h 50m

C$ 569

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 Seattle 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?

In general, September is the cheapest month to fly from Seattle to Cancún. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 639. The month of October is another great option to travel to Cancún, with average flight prices from Seattle averaging around C$ 650.

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

The cheapest day to depart from Seattle to Cancún is on a Thursday. Travellers who choose to depart for Cancún on a Thursday will often find tickets for as low as C$ 636. If your travel schedule is flexible, try to avoid departing on a Wednesday because tickets tend to average around C$ 866. 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 data shows that the cheapest Seattle to Cancún flights are usually those with departure times in the afternoon. Our users have found flights to Cancún in the afternoon for as low as C$ 328. Flights to Cancún are more costly in the evening, with an average ticket price of C$ 858. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Seattle/Tacoma Intl to Cancun flight route?

Fly from Seattle/Tacoma Intl to Cancun for the best Seattle/Tacoma Intl - Cancun flight prices

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

You are more likely to see cheaper flights to Cancún from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Cancún for around C$ 779 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Cancún from Seattle for as low as C$ 730 on momondo.

What cabin class options are available on Seattle/Tacoma Intl to Cancun flights?

There are 2 cabin classes available to choose from on Seattle/Tacoma Intl to Cancun flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Seattle to Cancún flights?

You could potentially save up to 33% on your flight if you consider stops on a Seattle to Cancún flight.

How have Seattle to Cancún flight prices changed over time?

As of December 2025, prices for Seattle to Cancún flights are approximately 28% more expensive when compared to flights at the same time last year.

When to book flights from Seattle to Cancún

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

Cheap Seattle to Cancún (SEA to CUN) flight deals and tips

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

Best price found

C$ 835

Fastest flight time

5h 55m

Direct flights

Every day

Airports in Cancún

1 airport
The best flight deal from Seattle to Cancún found on momondo in the last 72 hours is C$ 835
The fastest flight from Seattle to Cancún takes 5h 55m
Direct flights go from Seattle to Cancún every day.
There is 1 airport in Cancún. From Seattle there are direct flights to Cancun (CUN).
Search flight deals

  • How far is Seattle/Tacoma Intl to Cancun by plane?

    A flight from Seattle/Tacoma Intl to Cancun will travel around 4321.5 km. In terms of flight time, this usually takes a little over 5h 55m.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Cancun Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Cancun Airport are updated daily.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Cancun Airport?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Cancun Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Cancun Airport.

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

    The necessary travel and health documents for your Cancun Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Seattle to Cancún?

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

Best airlines flying from Seattle to Cancún

Compare and see reviews for airlines that fly from Seattle to Cancún with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom C$ 394Free CancellationRating
7.9
8,006 reviews
Search Delta flights
AeromexicoPriceFrom C$ 453Free CancellationRating
7.4
1,629 reviews
Search Aeromexico flights
Alaska AirlinesPriceFrom C$ 545Free CancellationRating
8.0
11,478 reviews
Search Alaska Airlines flights

  • Alaska Airlines Flights From Seattle to Cancún

    Alaska Airlines flies from Seattle to Cancún around 9 times per week, with 11,478 momondo users rating the airline 8.0/10. The cheapest Alaska Airlines deal from Seattle to Cancún in the last 72 hours was C$ 545 (round-trip), much lower than the average airfare cost of C$ 789 for Alaska Airlines flights on this route.

  • Delta Flights From Seattle to Cancún

    Delta is also a popular choice for this route. Delta flight deals for Seattle to Cancún start from as low as C$ 394 round-trip, depending on your selected dates, with average Delta deals seen on momondo around C$ 765. Delta operates 7 flights to Cancún from Seattle in an average week. Users have rated it 7.9/10 across 8,006 reviews.

Travelling to a place near Cancún?

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

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Seattle to Cancún . Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo enables you to select and highlight flights to Cancún from Seattle with this policy.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Seattle to Cancún.

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

Yes. momondo can track prices for Seattle to Cancún flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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