Cheap Flights from Seattle to Cancun South

View €138 flight on Mon, 20 Oct 2025Opens in a new window

Popular airlines from Seattle to Cancun South

  • Aeromexico

    Aeromexico

  • Air Canada

    Air Canada

  • Alaska Airlines

    Alaska Airlines

  • United

    United

  • American Airlines

    American Airlines

  • Delta

    Delta

  • Volaris

    Volaris

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Cheap flights from Seattle to Cancun South (SEA-CUN)

Prices were available within the past 7 days and start at €138 for one-way flights and €300 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, 4 Sep - Sat, 13 Sep
SEA
Seattle
CUN
Cancun
€300 Return, found 3 days ago
€300
Return
found 3 days ago
Select Delta flight, departing Thu, 4 Sep from Seattle to Cancun, returning Sat, 13 Sep, priced at €300 found 3 days ago
American Airlines
Thu, 4 Sep - Sat, 13 Sep
SEA
Seattle
CUN
Cancun
€329 Return, found 3 days ago
€329
Return
found 3 days ago
Select American Airlines flight, departing Thu, 4 Sep from Seattle to Cancun, returning Sat, 13 Sep, priced at €329 found 3 days ago
Delta
Thu, 4 Sep - Sat, 13 Sep
SEA
Seattle
CUN
Cancun
€330 Return, found 3 days ago
€330
Return
found 3 days ago
Select Delta flight, departing Thu, 4 Sep from Seattle to Cancun, returning Sat, 13 Sep, priced at €330 found 3 days ago
JetBlue Airways
Thu, 4 Sep - Sat, 13 Sep
SEA
Seattle
CUN
Cancun
€336 Return, found 3 days ago
€336
Return
found 3 days ago
Select JetBlue Airways flight, departing Thu, 4 Sep from Seattle to Cancun, returning Sat, 13 Sep, priced at €336 found 3 days ago
United
Thu, 4 Sep - Sat, 13 Sep
SEA
Seattle
CUN
Cancun
€342 Return, found 3 days ago
€342
Return
found 3 days ago
Select United flight, departing Thu, 4 Sep from Seattle to Cancun, returning Sat, 13 Sep, priced at €342 found 3 days ago
Aeromexico
Thu, 4 Sep - Sat, 13 Sep
SEA
Seattle
CUN
Cancun
€358 Return, found 3 days ago
€358
Return
found 3 days ago
Select Aeromexico flight, departing Thu, 4 Sep from Seattle to Cancun, returning Sat, 13 Sep, priced at €358 found 3 days ago

Find the cheapest month to fly from Seattle (SEA) to Cancun (CUN)

September is typically the cheapest month to fly

From €258 - €346 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.