Cheap Flights from Seattle to Arlington

View €90 flight on Thu, 7 Aug 2025Opens in a new window

Popular airlines from Seattle to Arlington

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Cheap flights from Seattle to Arlington (SEA-WAS)

Prices were available within the past 7 days and start at €90 for one-way flights and €179 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, 7 Aug - Thu, 14 Aug
SEA
Seattle
BWI
Baltimore
€179 Return, found 2 days ago
€179
Return
found 2 days ago
Select American Airlines flight, departing Thu, 7 Aug from Seattle to Baltimore, returning Thu, 14 Aug, priced at €179 found 2 days ago
American Airlines
Thu, 7 Aug - Thu, 14 Aug
SEA
Seattle
BWI
Baltimore
€209 Return, found 2 days ago
€209
Return
found 2 days ago
Select American Airlines flight, departing Thu, 7 Aug from Seattle to Baltimore, returning Thu, 14 Aug, priced at €209 found 2 days ago
American Airlines
Thu, 7 Aug - Wed, 13 Aug
SEA
Seattle
BWI
Baltimore
€215 Return, found 14 hours ago
€215
Return
found 14 hours ago
Select American Airlines flight, departing Thu, 7 Aug from Seattle to Baltimore, returning Wed, 13 Aug, priced at €215 found 14 hours ago
Delta
Thu, 7 Aug - Wed, 13 Aug
SEA
Seattle
DCA
Washington
€246 Return, found 14 hours ago
€246
Return
found 14 hours ago
Select Delta flight, departing Thu, 7 Aug from Seattle to Washington, returning Wed, 13 Aug, priced at €246 found 14 hours ago
United
Sun, 28 Sep - Tue, 30 Sep
SEA
Seattle
BWI
Baltimore
€255 Return, found 4 days ago
€255
Return
found 4 days ago
Select United flight, departing Sun, 28 Sep from Seattle to Baltimore, returning Tue, 30 Sep, priced at €255 found 4 days ago
JetBlue Airways
Thu, 7 Aug - Wed, 13 Aug
SEA
Seattle
DCA
Washington
€343 Return, found 14 hours ago
€343
Return
found 14 hours ago
Select JetBlue Airways flight, departing Thu, 7 Aug from Seattle to Washington, returning Wed, 13 Aug, priced at €343 found 14 hours ago

Find the cheapest month to fly from Seattle (SEA) to Washington (DCA)

October is typically the cheapest month to fly

From €119 - €303 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.