Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Seattle to Cancún from C$ 219

SEA — CUN
14 Oct — 21 Oct1
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

Sun 22/1111:32 a.m. -
1 stop27h 35m
Mon 30/119:15 p.m. -
2 stops45h 51m
Deal found 11/9C$ 639
Sun 8/119:07 p.m. -
1 stop15h 24m
Mon 16/1111:00 a.m. -
2 stops50h 59m
Deal found 11/9C$ 670
Tue 10/115:40 a.m. -
2 stops11h 05m
Thu 19/118:20 a.m. -
2 stops13h 15m
Deal found 13/9C$ 709
Sun 8/1112:15 a.m. -
1 stop10h 25m
Fri 13/112:10 p.m. -
1 stop13h 30m
Deal found 10/9C$ 749
Tue 10/115:40 a.m. -
2 stops11h 05m
Wed 11/118:20 a.m. -
2 stops12h 30m
Deal found 10/9C$ 756
Tue 17/115:40 a.m. -
2 stops11h 05m
Tue 24/111:50 p.m. -
2 stops14h 20m
Deal found 13/9C$ 771
Sun 18/109:15 p.m. -
2 stops12h 50m
Fri 23/102:20 p.m. -
2 stops12h 20m
Deal found 9/9C$ 773
Sun 13/1212:20 a.m. -
1 stop9h 50m
Tue 22/1211:40 a.m. -
1 stop12h 35m
Deal found 11/9C$ 781
Mon 14/125:40 a.m. -
2 stops11h 05m
Fri 18/121:50 p.m. -
2 stops14h 15m
Deal found 10/9C$ 784
Sat 12/126:50 a.m. -
1 stop10h 00m
Mon 21/126:30 p.m. -
1 stop10h 15m
Deal found 11/9C$ 785
Sun 13/125:15 a.m. -
2 stops11h 30m
Sat 19/124:25 p.m. -
1 stop11h 15m
Deal found 10/9C$ 788
Mon 14/125:40 a.m. -
2 stops11h 05m
Sun 20/124:35 p.m. -
1 stop11h 30m
Deal found 10/9C$ 795

Find flight deals from Seattle to Cancún

Round-trip from

C$ 639

One-way from

C$ 219

Popular in

December

Cheapest in

January

Average price

C$ 950

Good one-way deal

C$ 450 or less
22/11-30/11
  • 22/11-30/11
  • 3 total stops
  • 73h 26m total
  • Seattle to Cancún
Search Deals
2/10-31/12
  • 2/10-31/12
  • 2 total stops
  • 33h 40m total
  • Seattle to Cancún
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (C$ 13 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2026
Search Deals
Price to beat on a one-way flight from Seattle/Tacoma Intl to Cancun.
Search Deals

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

Sun 25/10

9:15 p.m.-1:40 p.m.

2 stops14h 25m

Cancun

Wed 31/12

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

Nonstop0h 00m

C$ 362
Quickest round-trip

SeattleCancún

SEA Seattle/Tacoma Intl - CUN Cancun

SEACUN

Seattle/Tacoma Intl

Sun 24/1

7:15 a.m.-4:10 p.m.

Nonstop5h 55m

Cancun

Wed 31/12

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

Nonstop0h 00m

C$ 401

SeattleCancún

SEA Seattle/Tacoma Intl - CUN Cancun

SEACUN

Seattle/Tacoma Intl

Tue 9/3

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

Nonstop6h 00m

Cancun

Wed 31/12

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

Nonstop0h 00m

C$ 401

SeattleCancún

SEA Seattle/Tacoma Intl - CUN Cancun

SEACUN

Seattle/Tacoma Intl

Tue 8/12

7:25 a.m.-4:29 p.m.

Nonstop6h 04m

Cancun

Wed 31/12

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

Nonstop0h 00m

C$ 402

SeattleCancún

SEA Seattle/Tacoma Intl - CUN Cancun

SEACUN

Seattle/Tacoma Intl

Tue 17/11

7:25 a.m.-4:20 p.m.

Nonstop5h 55m

Cancun

Wed 31/12

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

Nonstop0h 00m

C$ 402

SeattleCancún

SEA Seattle/Tacoma Intl - CUN Cancun

SEACUN

Seattle/Tacoma Intl

Tue 19/1

7:15 a.m.-4:10 p.m.

Nonstop5h 55m

Cancun

Wed 31/12

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

Nonstop0h 00m

C$ 402

SeattleCancún

SEA Seattle/Tacoma Intl - CUN Cancun

SEACUN

Seattle/Tacoma Intl

Tue 10/11

7:25 a.m.-4:20 p.m.

Nonstop5h 55m

Cancun

Wed 31/12

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

Nonstop0h 00m

C$ 402

SeattleCancún

SEA Seattle/Tacoma Intl - CUN Cancun

SEACUN

Seattle/Tacoma Intl

Sun 21/2

7:15 a.m.-4:10 p.m.

Nonstop5h 55m

Cancun

Wed 31/12

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

Nonstop0h 00m

C$ 416

SeattleCancún

SEA Seattle/Tacoma Intl - CUN Cancun

SEACUN

Seattle/Tacoma Intl

Thu 31/12

7:10 a.m.-4:05 p.m.

Nonstop5h 55m

Cancun

Wed 31/12

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

Nonstop0h 00m

C$ 456

SeattleCancún

SEA Seattle/Tacoma Intl - CUN Cancun

SEACUN

Seattle/Tacoma Intl

Thu 1/10

9:35 p.m.-5:00 p.m.

1 stop17h 25m

Cancun

Wed 31/12

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

Nonstop0h 00m

C$ 463

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/9

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 20 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, January is the cheapest month in which you can book a flight from Seattle to Cancún (average of C$ 678). Flying from Seattle to Cancún in December is currently the most expensive (average of C$ 1,062). 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 below average for this route at the moment.

Seattle to Cancún flights typically cost between C$ 807 and C$ 1,056 in November.
The cheapest round-trip price found within the last 5 days was C$ 639 on Multiple Airlines (22 Nov-30 Nov).

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
12,922 reviews
Check prices

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.0

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
12,922 reviews
Alaska Airlines
7.9
Good
12,922 reviews
Check prices

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.0

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
8,566 reviews
Alaska Airlines
7.9
Good
12,922 reviews
Check prices

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.0

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
1,142 reviews
Alaska Airlines
7.9
Good
12,922 reviews
Check prices

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.0

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

  • How popular is this Seattle to Cancún flight route?

    The Seattle/Tacoma Intl to Cancun flight path was viewed by 10 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 and Delta can get you from Seattle to Cancún in just under 8h 05m. Your travel time can differ by up to 9h 49m. The distance between Seattle and Cancún is about 4318 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    Volaris, at C$ 238, 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 72% 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$ 450 for a flight from Seattle to Cancún. The cheapest flight overall is C$ 450 while the most popular route, (Seattle/Tacoma Intl - Cancun) is currently priced at C$ 639.

  • 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, January is the cheapest month in which you can book a flight from Seattle to Cancún (average of C$ 678). Flying from Seattle to Cancún in December is currently the most expensive (average of C$ 1,062). 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$ 238AverageC$ 473FlexibilityNo cancel feeOn-time79%
Search Volaris flights
DeltaCheapestC$ 462AverageC$ 743FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Alaska AirlinesCheapestC$ 707AverageC$ 891FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

Fly with Cheapflights

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!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.