Cheap flights from Denver to Herron Island

View AU$121 flight on Mon, 25 Aug. 2025Opens in a new window

Popular airlines from Denver to Herron Island

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Cheap Flights from Denver (DEN) to Herron Island (SEA)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Mon, 8 Sep. - Wed, 24 Sep.
DEN
Denver
SEA
Seattle
AU$243 Return, found 6 days ago
AU$243
Return
found 6 days ago
Select Alaska Airlines flight, departing Mon, 8 Sep. from Denver to Seattle, returning Wed, 24 Sep., priced at AU$243 found 6 days ago
Delta
Mon, 8 Sep. - Wed, 24 Sep.
DEN
Denver
SEA
Seattle
AU$244 Return, found 6 days ago
AU$244
Return
found 6 days ago
Select Delta flight, departing Mon, 8 Sep. from Denver to Seattle, returning Wed, 24 Sep., priced at AU$244 found 6 days ago
Alaska Airlines
Fri, 22 Aug. - Tue, 26 Aug.
DEN
Denver
SEA
Seattle
AU$256 Return, found 5 days ago
AU$256
Return
found 5 days ago
Select Alaska Airlines flight, departing Fri, 22 Aug. from Denver to Seattle, returning Tue, 26 Aug., priced at AU$256 found 5 days ago
United
Fri, 22 Aug. - Tue, 26 Aug.
DEN
Denver
SEA
Seattle
AU$318 Return, found 5 days ago
AU$318
Return
found 5 days ago
Select United flight, departing Fri, 22 Aug. from Denver to Seattle, returning Tue, 26 Aug., priced at AU$318 found 5 days ago
Hawaiian Airlines
Mon, 11 Aug. - Wed, 13 Aug.
DEN
Denver
SEA
Seattle
AU$405 Return, found 6 hours ago
AU$405
Return
found 6 hours ago
Select Hawaiian Airlines flight, departing Mon, 11 Aug. from Denver to Seattle, returning Wed, 13 Aug., priced at AU$405 found 6 hours ago
American Airlines
Fri, 17 Oct. - Fri, 31 Oct.
DEN
Denver
SEA
Seattle
AU$519 Return, found 1 day ago
AU$519
Return
found 1 day ago
Select American Airlines flight, departing Fri, 17 Oct. from Denver to Seattle, returning Fri, 31 Oct., priced at AU$519 found 1 day ago

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

January is typically the cheapest month to fly

From AU$100 - AU$402 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.