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Cheap flights from Seattle to Cancún from C$ 338

SEA — CUN
30 Nov — 7 Dec1
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

Thu 26/117:45 a.m. -
1 stop12h 45m
Wed 2/126:35 p.m. -
1 stop17h 57m
Deal found 27/10C$ 705
Tue 1/127:45 a.m. -
1 stop12h 45m
Wed 9/126:35 p.m. -
1 stop23h 02m
Deal found 30/10C$ 708
Fri 27/117:45 a.m. -
1 stop12h 45m
Sat 5/129:30 p.m. -
1 stop26h 29m
Deal found 26/10C$ 716
Mon 16/117:45 a.m. -
1 stop12h 45m
Tue 24/118:00 a.m. -
1 stop9h 37m
Deal found 28/10C$ 719
Mon 16/117:45 a.m. -
1 stop12h 45m
Wed 18/1111:35 a.m. -
1 stop12h 24m
Deal found 28/10C$ 730
Thu 12/117:45 a.m. -
1 stop12h 45m
Thu 19/118:00 a.m. -
1 stop16h 57m
Deal found 28/10C$ 744
Thu 12/117:45 a.m. -
1 stop12h 45m
Wed 18/118:00 a.m. -
1 stop15h 59m
Deal found 28/10C$ 755
Thu 26/114:37 p.m. -
2 stops21h 31m
Wed 2/1211:55 p.m. -
2 stops23h 07m
Deal found 27/10C$ 757
Tue 1/127:16 a.m. -
Nonstop6h 04m
Wed 9/129:24 a.m. -
1 stop13h 31m
Deal found 30/10C$ 769
Mon 28/1211:15 p.m. -
1 stop13h 15m
Thu 7/15:30 p.m. -
Nonstop6h 43m
Deal found 30/10C$ 776
Sun 27/1211:15 p.m. -
1 stop13h 15m
Fri 8/18:00 a.m. -
1 stop9h 39m
Deal found 26/10C$ 778

Find flight deals from Seattle to Cancún

Round-trip from

C$ 705

One-way from

C$ 338

Popular in

October

Cheapest in

May

Average price

C$ 1,056

Good one-way deal

C$ 453 or less
Air Canada
  • Air Canada
  • 29/11-8/12
  • 2 total stops
  • 35h 47m total
  • Seattle to Cancún
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Air Canada
  • Air Canada
  • 13/12-31/12
  • 1 total stop
  • 18h 50m total
  • Seattle to Cancún
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (C$ 112 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2026
Search Deals
Price to beat on a one-way flight from Seattle/Tacoma Intl to Cancun.
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Cheapflights Fare Finder

 
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 Seattle/Tacoma Intl - CUN Cancun

SEACUN

Seattle/Tacoma Intl

Tue 1/12

7:16 a.m.-4:20 p.m.

Nonstop6h 04m

Cancun

Wed 31/12

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

Nonstop0h 00m

C$ 376
Quickest round-trip

SeattleCancún

SEA Seattle/Tacoma Intl - CUN Cancun

SEACUN

Seattle/Tacoma Intl

Wed 2/12

7:03 a.m.-4:00 p.m.

Nonstop5h 57m

Cancun

Wed 31/12

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

Nonstop0h 00m

C$ 376

SeattleCancún

SEA Seattle/Tacoma Intl - CUN Cancun

SEACUN

Seattle/Tacoma Intl

Mon 11/1

7:15 a.m.-4:20 p.m.

Nonstop6h 05m

Cancun

Wed 31/12

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

Nonstop0h 00m

C$ 376

SeattleCancún

SEA Seattle/Tacoma Intl - CUN Cancun

SEACUN

Seattle/Tacoma Intl

Sun 24/1

7:15 a.m.-4:20 p.m.

Nonstop6h 05m

Cancun

Wed 31/12

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

Nonstop0h 00m

C$ 376

SeattleCancún

SEA Seattle/Tacoma Intl - CUN Cancun

SEACUN

Seattle/Tacoma Intl

Wed 30/12

7:16 a.m.-4:20 p.m.

Nonstop6h 04m

Cancun

Wed 31/12

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

Nonstop0h 00m

C$ 376

SeattleCancún

SEA Seattle/Tacoma Intl - CUN Cancun

SEACUN

Seattle/Tacoma Intl

Tue 8/12

7:16 a.m.-4:20 p.m.

Nonstop6h 04m

Cancun

Wed 31/12

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

Nonstop0h 00m

C$ 376

SeattleCancún

SEA Seattle/Tacoma Intl - CUN Cancun

SEACUN

Seattle/Tacoma Intl

Tue 15/12

7:16 a.m.-4:20 p.m.

Nonstop6h 04m

Cancun

Wed 31/12

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

Nonstop0h 00m

C$ 376

SeattleCancún

SEA Seattle/Tacoma Intl - CUN Cancun

SEACUN

Seattle/Tacoma Intl

Sun 13/12

5:15 a.m.-7:45 p.m.

2 stops11h 30m

Cancun

Wed 31/12

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

Nonstop0h 00m

C$ 383

SeattleCancún

SEA Seattle/Tacoma Intl - CUN Cancun

SEACUN

Seattle/Tacoma Intl

Mon 28/12

11:15 p.m.-3:30 p.m.

1 stop13h 15m

Cancun

Wed 31/12

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

Nonstop0h 00m

C$ 383

SeattleCancún

SEA Seattle/Tacoma Intl - CUN Cancun

SEACUN

Seattle/Tacoma Intl

Tue 1/12

7:16 a.m.-4:20 p.m.

Nonstop6h 04m

Cancun

Wed 9/12

9:24 a.m.-7:55 p.m.

1 stop13h 31m

C$ 769

Flights are sorted by cheapest round-trip flights first.

Deals found on 30/10

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

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

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 58 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, May is the cheapest month in which you can book a flight from Seattle to Cancún (average of C$ 768). Flying from Seattle to Cancún in October is currently the most expensive (average of C$ 1,056). 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$ 1,174 in November.
The cheapest round-trip price found within the last 5 days was C$ 705 on Air Canada (26 Nov-2 Dec).

Reviews of airlines servicing Cancún

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
13,135 reviews
Check prices

Entertainment

7.0

Crew

8.5

Food

7.0

Comfort

7.8

Boarding

8.1

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
13,135 reviews
Alaska Airlines
7.9
Good
13,135 reviews
Check prices

Entertainment

7.0

Crew

8.5

Food

7.0

Comfort

7.8

Boarding

8.1

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
8,696 reviews
Alaska Airlines
7.9
Good
13,135 reviews
Check prices

Entertainment

7.0

Crew

8.5

Food

7.0

Comfort

7.8

Boarding

8.1

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
1,112 reviews
Alaska Airlines
7.9
Good
13,135 reviews
Check prices

Entertainment

7.0

Crew

8.5

Food

7.0

Comfort

7.8

Boarding

8.1

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

  • How popular is this Seattle to Cancún flight route?

    The Seattle/Tacoma Intl to Cancun flight path was viewed by 4 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?

    Delta and Alaska Airlines can get you from Seattle to Cancún in just under 6h. Your travel time will be generally consistent. The distance between Seattle and Cancún is about 4318 km. Most flights are nonstop.

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

    Volaris, at C$ 239, 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 73% less than the average price by searching for these airlines.

  • What are the cheapest flights from Seattle to Cancún?

    On average you can expect to pay C$ 453 for a flight from Seattle to Cancún. The cheapest flight overall is C$ 453 while the most popular route, (Seattle/Tacoma Intl - Cancun) is currently priced at C$ 733.

  • 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, May is the cheapest month in which you can book a flight from Seattle to Cancún (average of C$ 768). Flying from Seattle to Cancún in October is currently the most expensive (average of C$ 1,056). 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

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from Seattle to Cancún

AirlineCheapestAverageFlexibilityOn-time
VolarisCheapestC$ 239AverageC$ 476FlexibilityNo cancel feeOn-time79%
Search Volaris flights
DeltaCheapestC$ 465AverageC$ 748FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Alaska AirlinesCheapestC$ 712AverageC$ 897FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

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