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Cheap flights from Seattle to Cancún from £182

SEA — CUN
18 Oct — 25 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

Tue 10/1105:40 -
2 stops11h 05m
Thu 12/1113:50 -
2 stops14h 10m
Deal found 14/9£382
Mon 14/1205:40 -
2 stops11h 05m
Fri 18/1213:50 -
2 stops14h 15m
Deal found 17/9£396
Mon 9/1106:15 -
1 stop7h 20m
Wed 18/1116:35 -
1 stop9h 15m
Deal found 14/9£406
Tue 17/1106:10 -
2 stops10h 35m
Tue 24/1113:50 -
2 stops12h 20m
Deal found 15/9£410
Fri 13/1105:15 -
2 stops11h 30m
Tue 24/1118:25 -
1 stop10h 20m
Deal found 14/9£412
Sun 6/1200:15 -
1 stop9h 50m
Mon 21/1214:45 -
1 stop13h 30m
Deal found 17/9£419
Thu 29/1015:15 -
2 stops18h 40m
Thu 5/1108:00 -
2 stops16h 57m
Deal found 14/9£429
Tue 15/1205:40 -
2 stops11h 05m
Tue 22/1213:50 -
2 stops14h 15m
Deal found 17/9£432

Find flight deals from Seattle to Cancún

Round-trip from

£382

One-way from

£182

Popular in

December

Cheapest in

January

Average price

£512

Good one-way deal

£633 or less
Southwest
  • Southwest
  • 10/11-19/11
  • 4 total stops
  • 24h 20m total
  • Seattle to Cancún
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Southwest
  • Southwest
  • 10/11-31/12
  • 2 total stops
  • 11h 05m total
  • Seattle to Cancún
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (£3 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2026
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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 return flight

SeattleCancún

SEA Seattle/Tacoma Intl - CUN Cancun

SEACUN

Seattle/Tacoma Intl

Mon 25/1

06:55-19:45

2 stops9h 50m

Cancun

Wed 31/12

00:00-22:00

Nonstop0h 00m

£210

SeattleCancún

SEA Seattle/Tacoma Intl - CUN Cancun

SEACUN

Seattle/Tacoma Intl

Tue 20/10

00:10-12:40

1 stop10h 30m

Cancun

Wed 31/12

00:00-22:00

Nonstop0h 00m

£210

SeattleCancún

SEA Seattle/Tacoma Intl - CUN Cancun

SEACUN

Seattle/Tacoma Intl

Tue 3/11

05:40-19:45

2 stops11h 05m

Cancun

Wed 31/12

00:00-22:00

Nonstop0h 00m

£210

SeattleCancún

SEA Seattle/Tacoma Intl - CUN Cancun

SEACUN

Seattle/Tacoma Intl

Mon 19/10

00:10-12:40

1 stop10h 30m

Cancun

Wed 31/12

00:00-22:00

Nonstop0h 00m

£210

SeattleCancún

SEA Seattle/Tacoma Intl - CUN Cancun

SEACUN

Seattle/Tacoma Intl

Fri 23/10

20:40-10:55

2 stops12h 15m

Cancun

Wed 31/12

00:00-22:00

Nonstop0h 00m

£216

SeattleCancún

SEA Seattle/Tacoma Intl - CUN Cancun

SEACUN

Seattle/Tacoma Intl

Mon 12/10

20:40-13:15

2 stops14h 35m

Cancun

Wed 31/12

00:00-22:00

Nonstop0h 00m

£216
Fastest return journey

SeattleCancún

SEA Seattle/Tacoma Intl - CUN Cancun

SEACUN

Seattle/Tacoma Intl

Wed 9/12

07:25-16:29

Nonstop6h 04m

Cancun

Wed 31/12

00:00-22:00

Nonstop0h 00m

£217

SeattleCancún

SEA Seattle/Tacoma Intl - CUN Cancun

SEACUN

Seattle/Tacoma Intl

Wed 2/12

07:25-16:29

Nonstop6h 04m

Cancun

Wed 31/12

00:00-22:00

Nonstop0h 00m

£217

SeattleCancún

SEA Seattle/Tacoma Intl - CUN Cancun

SEACUN

Seattle/Tacoma Intl

Tue 3/11

09:30-00:32

1 stop12h 02m

Cancun

Wed 31/12

00:00-22:00

Nonstop0h 00m

£217

SeattleCancún

SEA Seattle/Tacoma Intl - CUN Cancun

SEACUN

Seattle/Tacoma Intl

Sun 10/1

06:00-19:45

2 stops10h 45m

Cancun

Wed 31/12

00:00-22:00

Nonstop0h 00m

£226

Flights are sorted by cheapest return flights first.

Deals found on 14/9

Showing 1-10 of 23 resultsSorted by cheapest first
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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 return 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 best time to book flights from Seattle to Cancún is 20 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 £366). Flying from Seattle to Cancún in December is currently the most expensive (average of £573). 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 for a return flight from Seattle to Cancún?

Airfare is below average for this route at the moment.

Seattle to Cancún flights typically cost between £435 and £569 in November.
The cheapest return price found within the last 5 days was £382 on Southwest (10 Nov–12 Nov).

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 1 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?

    Airlines like Southwest and Delta fly from Seattle to Cancún in about 10h 30m. The time it takes to get you to your destination can typically vary by up to 1h 30m. The distance between Seattle and Cancún is about 2683 mi. Both multi-stop and direct flights can be found to your destination and back.

  • 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 holiday 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 £366). Flying from Seattle to Cancún in December is currently the most expensive (average of £573). 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
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Why should you use Cheapflights to find cheap flight tickets from Seattle to Cancún?

Cheapflights helps you find that perfect flight to Cancún from Seattle by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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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.

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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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