Cheap Flights from Baltimore to Bellevue

View €126 flight on Sat, 16 Aug 2025Opens in a new window

Popular airlines from Baltimore to Bellevue

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Cheap flights from Baltimore to Bellevue (WAS-SEA)

Prices were available within the past 7 days and start at €126 for one-way flights and €253 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, 16 Aug - Sat, 23 Aug
DCA
Washington
SEA
Seattle
€253 Return, found 1 hour ago
€253
Return
found 1 hour ago
Select American Airlines flight, departing Sat, 16 Aug from Washington to Seattle, returning Sat, 23 Aug, priced at €253 found 1 hour ago
Delta
Sat, 16 Aug - Sat, 23 Aug
BWI
Baltimore
SEA
Seattle
€254 Return, found 1 hour ago
€254
Return
found 1 hour ago
Select Delta flight, departing Sat, 16 Aug from Baltimore to Seattle, returning Sat, 23 Aug, priced at €254 found 1 hour ago
Delta
Sat, 16 Aug - Mon, 25 Aug
DCA
Washington
SEA
Seattle
€255 Return, found 4 days ago
€255
Return
found 4 days ago
Select Delta flight, departing Sat, 16 Aug from Washington to Seattle, returning Mon, 25 Aug, priced at €255 found 4 days ago
American Airlines
Sat, 16 Aug - Sat, 23 Aug
BWI
Baltimore
SEA
Seattle
€261 Return, found 1 hour ago
€261
Return
found 1 hour ago
Select American Airlines flight, departing Sat, 16 Aug from Baltimore to Seattle, returning Sat, 23 Aug, priced at €261 found 1 hour ago
United
Sat, 16 Aug - Sat, 23 Aug
BWI
Baltimore
SEA
Seattle
€303 Return, found 1 hour ago
€303
Return
found 1 hour ago
Select United flight, departing Sat, 16 Aug from Baltimore to Seattle, returning Sat, 23 Aug, priced at €303 found 1 hour ago
JetBlue Airways
Sat, 16 Aug - Mon, 25 Aug
DCA
Washington
SEA
Seattle
€515 Return, found 4 days ago
€515
Return
found 4 days ago
Select JetBlue Airways flight, departing Sat, 16 Aug from Washington to Seattle, returning Mon, 25 Aug, priced at €515 found 4 days ago

Find the cheapest month to fly from Baltimore (BWI) to Seattle (SEA)

September is typically the cheapest month to fly

From €127 - €217 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.