Cheap Flights from Seattle to Aspen

View €67 flight on Sat, 6 Sep 2025Opens in a new window

Popular airlines from Seattle to Aspen

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Cheap flights from Seattle to Aspen (SEA-DEN)

Prices were available within the past 7 days and start at €67 for one-way flights and €264 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, 7 Aug - Tue, 12 Aug
SEA
Seattle
DEN
Denver
€264 Return, found 6 days ago
€264
Return
found 6 days ago
Select Delta flight, departing Thu, 7 Aug from Seattle to Denver, returning Tue, 12 Aug, priced at €264 found 6 days ago
Delta
Thu, 7 Aug - Tue, 12 Aug
SEA
Seattle
DEN
Denver
€273 Return, found 6 days ago
€273
Return
found 6 days ago
Select Delta flight, departing Thu, 7 Aug from Seattle to Denver, returning Tue, 12 Aug, priced at €273 found 6 days ago
United
Thu, 7 Aug - Tue, 12 Aug
SEA
Seattle
DEN
Denver
€283 Return, found 6 days ago
€283
Return
found 6 days ago
Select United flight, departing Thu, 7 Aug from Seattle to Denver, returning Tue, 12 Aug, priced at €283 found 6 days ago
Delta
Thu, 7 Aug - Tue, 12 Aug
SEA
Seattle
DEN
Denver
€290 Return, found 6 days ago
€290
Return
found 6 days ago
Select Delta flight, departing Thu, 7 Aug from Seattle to Denver, returning Tue, 12 Aug, priced at €290 found 6 days ago
Delta
Thu, 7 Aug - Tue, 12 Aug
SEA
Seattle
DEN
Denver
€298 Return, found 6 days ago
€298
Return
found 6 days ago
Select Delta flight, departing Thu, 7 Aug from Seattle to Denver, returning Tue, 12 Aug, priced at €298 found 6 days ago
American Airlines
Thu, 7 Aug - Tue, 12 Aug
SEA
Seattle
DEN
Denver
€315 Return, found 6 days ago
€315
Return
found 6 days ago
Select American Airlines flight, departing Thu, 7 Aug from Seattle to Denver, returning Tue, 12 Aug, priced at €315 found 6 days ago

Find the cheapest month to fly from Seattle (SEA) to Denver (DEN)

January is typically the cheapest month to fly

From €56 - €225 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.