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Cheap flights from Seattle to Cancún from C$ 334

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 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CUN
25 Aug — 1 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Cancún

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to Cancún
Explore the most affordable flight options available from Seattle to Cancún. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 July 2026.

Sun 15/116:15 a.m.
SEA
-
CUN
1 stop7h 20m
Southwest
Fri 20/112:10 p.m.
CUN
-
SEA
1 stop13h 20m
Southwest
Deal found 22/7C$ 695
Mon 14/97:25 p.m.
SEA
-
CUN
2 stops15h 45m
Southwest
Thu 17/91:40 p.m.
CUN
-
SEA
2 stops13h 00m
Southwest
Deal found 22/7C$ 733
Mon 24/811:00 p.m.
SEA
-
CUN
1 stop11h 04m
Multiple Airlines
Mon 31/83:55 p.m.
CUN
-
SEA
2 stops27h 56m
Multiple Airlines
Deal found 21/7C$ 741
Sun 2/811:00 p.m.
SEA
-
CUN
1 stop11h 04m
Volaris
Wed 12/810:40 a.m.
CUN
-
SEA
1 stop11h 19m
Volaris
Deal found 25/7C$ 743
Mon 16/116:15 a.m.
SEA
-
CUN
1 stop7h 20m
Southwest
Fri 20/112:10 p.m.
CUN
-
SEA
1 stop13h 20m
Southwest
Deal found 22/7C$ 744
Sat 7/117:45 a.m.
SEA
-
CUN
1 stop12h 45m
Air Canada
Sat 21/118:00 a.m.
CUN
-
SEA
1 stop16h 57m
Air Canada
Deal found 23/7C$ 745
Sun 23/89:25 p.m.
SEA
-
CUN
2 stops15h 35m
Southwest
Fri 28/811:35 a.m.
CUN
-
SEA
2 stops12h 10m
Southwest
Deal found 22/7C$ 750
Fri 6/119:25 p.m.
SEA
-
CUN
2 stops13h 30m
Southwest
Fri 13/111:50 p.m.
CUN
-
SEA
2 stops13h 50m
Southwest
Deal found 21/7C$ 757
Mon 14/98:25 p.m.
SEA
-
CUN
2 stops16h 35m
Southwest
Sat 19/910:10 a.m.
CUN
-
SEA
2 stops13h 20m
Southwest
Deal found 23/7C$ 760
Fri 21/810:30 p.m.
SEA
-
CUN
1 stop13h 10m
Southwest
Wed 26/812:50 p.m.
CUN
-
SEA
2 stops12h 35m
Southwest
Deal found 22/7C$ 776

Find flight deals from Seattle to Cancún

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) 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 26 July 2026.

Round-trip from

C$ 695

One-way from

C$ 334

Popular in

December

Cheapest in

September

Average price

C$ 940

Good one-way deal

C$ 457 or less
Southwest
  • Southwest
  • 15/11-20/11
  • 2 total stops
  • 20h 40m total
  • Seattle to Cancún
Search Deals
Southwest
  • Southwest
  • 25/10
  • 2 total stops
  • 12h 20m total
  • Seattle to Cancún
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (C$ 20 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a one-way flight from Seattle/Tacoma Intl to Cancun.
Search Deals

Cheapflights 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, Cheapflights users made 629,999 searches. Data last updated 26 July 2026.
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

Cheapest round-trip

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Mon 14/9

8:25 p.m.-3:00 p.m.

2 stops16h 35m

Cancun

Sat 19/9

10:10 a.m.-9:30 p.m.

2 stops13h 20m

C$ 760

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Thu 17/9

8:20 p.m.-3:00 p.m.

2 stops16h 40m

Cancun

Thu 24/9

11:35 a.m.-9:45 p.m.

2 stops12h 10m

C$ 776

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Fri 23/10

8:40 p.m.-1:00 p.m.

2 stops14h 20m

Cancun

Tue 3/11

8:20 a.m.-7:00 p.m.

2 stops13h 40m

C$ 850

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Mon 24/8

11:05 p.m.-12:10 p.m.

1 stop11h 05m

Cancun

Mon 31/8

1:05 p.m.-11:55 p.m.

1 stop12h 50m

C$ 906

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Tue 25/8

4:10 p.m.-1:10 p.m.

2 stops19h 00m

Cancun

Tue 1/9

1:40 p.m.-11:05 p.m.

2 stops11h 25m

C$ 917

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Sat 7/11

5:30 a.m.-7:45 p.m.

2 stops11h 15m

Cancun

Sat 21/11

5:10 p.m.-1:30 a.m.

2 stops11h 20m

C$ 982
Quickest round-trip

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Thu 3/12

7:00 a.m.-3:55 p.m.

Nonstop5h 55m

Cancun

Mon 7/12

4:59 p.m.-8:49 p.m.

Nonstop6h 50m

C$ 1,012

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Mon 4/1

10:00 p.m.-1:30 p.m.

1 stop12h 30m

Cancun

Tue 12/1

5:20 p.m.-9:05 p.m.

Nonstop6h 45m

C$ 1,019

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Sat 22/8

10:30 p.m.-12:10 p.m.

1 stop11h 40m

Cancun

Sat 29/8

10:10 a.m.-7:30 p.m.

2 stops11h 20m

C$ 1,082

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Tue 1/9

11:59 p.m.-1:01 p.m.

2 stops11h 02m

Cancun

Tue 8/9

11:16 a.m.-11:55 p.m.

2 stops14h 39m

C$ 1,129

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/7

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

Best time to book a flight from Seattle to Cancún

Have a flexible travel schedule? Discover the best time to fly to Cancún from Seattle 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 Seattle to Cancún

How far ahead should I book a flight from Seattle to Cancún?

The price you pay for your flight from Seattle to Cancún may vary depending on when you book. For the best chance of a lower fare, look to book 25 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 Seattle to Cancún?

Currently, September is the cheapest month in which you can book a flight from Seattle to Cancún (average of C$ 666). Flying from Seattle to Cancún in December is currently the most expensive (average of C$ 1,010). 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.

How much does it cost to fly round-trip from Seattle to Cancún?

Airfare is typical for this route at the moment.

Seattle to Cancún flights typically cost between C$ 680 and C$ 1,075 in November.
The cheapest round-trip price found within the last 5 days was C$ 695 on Southwest (15 Nov-20 Nov).

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 26 July 2026.
Read through reviews of airlines operating flights from Seattle to Cancún, such as Alaska Airlines,Delta, andVolaris. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
12,717 reviews
Check prices

Food

7.0

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Crew

8.5

Overall

7.9

Reviews

1 / 20
6.0
Good

Anonymous,Jul 2026

SEA - LHR

Alaska has a brilliant crew. And the seats are good. As much as i loved my trip from Heathrow to Seattle, i definitely did not feel the same on the return flight. A lot was due to feeling very cramped and unfortunately for me, i had a kicker behind me and a passenger who did not stop moving (but constantly) next to me. The good was not good and i noticed that most people around me left most of their meal. The ice cream was very nice. I did not have breakfast. However the food was very nice on the way to Seattle
Alaska Airlines
7.9
Good
12,717 reviews
Alaska Airlines
7.9
Good
12,717 reviews
Check prices

Food

7.0

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Crew

8.5

Overall

7.9

Reviews

1 / 20
6.0
Good

Anonymous,Jul 2026

SEA - LHR

Alaska has a brilliant crew. And the seats are good. As much as i loved my trip from Heathrow to Seattle, i definitely did not feel the same on the return flight. A lot was due to feeling very cramped and unfortunately for me, i had a kicker behind me and a passenger who did not stop moving (but constantly) next to me. The good was not good and i noticed that most people around me left most of their meal. The ice cream was very nice. I did not have breakfast. However the food was very nice on the way to Seattle
Delta
7.8
Good
8,487 reviews
Alaska Airlines
7.9
Good
12,717 reviews
Check prices

Food

7.0

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Crew

8.5

Overall

7.9

Reviews

1 / 20
6.0
Good

Anonymous,Jul 2026

SEA - LHR

Alaska has a brilliant crew. And the seats are good. As much as i loved my trip from Heathrow to Seattle, i definitely did not feel the same on the return flight. A lot was due to feeling very cramped and unfortunately for me, i had a kicker behind me and a passenger who did not stop moving (but constantly) next to me. The good was not good and i noticed that most people around me left most of their meal. The ice cream was very nice. I did not have breakfast. However the food was very nice on the way to Seattle
Volaris
6.6
Okay
1,151 reviews
Alaska Airlines
7.9
Good
12,717 reviews
Check prices

Food

7.0

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Crew

8.5

Overall

7.9

Reviews

1 / 20
6.0
Good

Anonymous,Jul 2026

SEA - LHR

Alaska has a brilliant crew. And the seats are good. As much as i loved my trip from Heathrow to Seattle, i definitely did not feel the same on the return flight. A lot was due to feeling very cramped and unfortunately for me, i had a kicker behind me and a passenger who did not stop moving (but constantly) next to me. The good was not good and i noticed that most people around me left most of their meal. The ice cream was very nice. I did not have breakfast. However the food was very nice on the way to Seattle

Related info for your journey

Find useful and relevant information for your journey from Seattle to Cancún. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this Seattle to Cancún flight route?

    The Seattle/Tacoma Intl to Cancun flight path was viewed by 11 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Seattle to Cancún?

    Southwest can get you from Seattle to Cancún in just under 16h 35m. Your travel time can differ by up to . The distance between Seattle and Cancún is about 4318 km.

  • What are the cheapest airlines flying from Seattle to Cancún round-trip?

    Volaris, at C$ 242, was found to be the cheapest airline from Seattle to Cancún.Alternate airlines to your destination round-trip include Delta and Alaska Airlines. You may be able to fly from Seattle to Cancún for 70% less than the average price by searching for these airlines.

  • What are the most reliable airlines from Seattle to Cancún?

    No one likes to see their flight delayed. When booking a flight from Seattle to Cancún consider choosing Delta (88%), Korean Air (88%) or Aeromexico (88%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Seattle to Cancún?

    On average you can expect to pay C$ 457 for a flight from Seattle to Cancún. The cheapest flight overall is C$ 457 while the most popular route, (Seattle/Tacoma Intl - Cancun) is currently priced at C$ 1,770.

  • Can I find deals for flights from Seattle to Cancún that include hotel bookings?

    Yes. In addition to deals on Seattle to Cancún flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Cancún?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Cancún.

  • Can I find deals for business class flights from Seattle to Cancún?

    Yes. Cheapflights offers flight deals from Seattle 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 Seattle to Cancún?

    Currently, September is the cheapest month in which you can book a flight from Seattle to Cancún (average of C$ 666). Flying from Seattle to Cancún in December is currently the most expensive (average of C$ 1,010). 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

Travelling to a place near Cancún?

Book flights to Cancún if you plan to visit one of these locations
Holbox
Puerto Aventuras
Punta Sam

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Top 3 airlines flying from Seattle to Cancún

Discover the top 3 airlines that operate flights from Seattle 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 629,999 searches. Data last updated 26 July 2026.
AirlineCheapestAverageFlexibilityOn-time
VolarisCheapestC$ 242AverageC$ 429FlexibilityNo cancel feeOn-time79%
Search Volaris flights
DeltaCheapestC$ 474AverageC$ 754FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Alaska AirlinesCheapestC$ 719AverageC$ 905FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Seattle to Cancún?

Cheapflights helps you search for flights from Seattle to Cancún via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Cancún?

Cheapflights simply makes it quick and affordable to book flights from Seattle to Cancún by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Seattle to Cancún with no change fees?

Yes, we can. To see specific flights from Seattle to Cancún with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Seattle to Cancún become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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