Cheap flights from Baltimore to Northwest Washington

View AU$158 flight on Thu, 14 Aug. 2025Opens in a new window

Popular airlines from Baltimore to Northwest Washington

  • Jetstar

    Jetstar

  • Qantas Airways

    Qantas Airways

  • Virgin Australia

    Virgin Australia

  • Scoot

    Scoot

  • American Airlines

    American Airlines

  • Emirates

    Emirates

  • United

    United

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Cheap Flights from Baltimore (WAS) to Northwest Washington (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.

American Airlines
Tue, 19 Aug. - Tue, 26 Aug.
BWI
Baltimore
SEA
Seattle
AU$316 Return, found 20 hours ago
AU$316
Return
found 20 hours ago
Select American Airlines flight, departing Tue, 19 Aug. from Baltimore to Seattle, returning Tue, 26 Aug., priced at AU$316 found 20 hours ago
American Airlines
Tue, 19 Aug. - Tue, 26 Aug.
BWI
Baltimore
SEA
Seattle
AU$384 Return, found 20 hours ago
AU$384
Return
found 20 hours ago
Select American Airlines flight, departing Tue, 19 Aug. from Baltimore to Seattle, returning Tue, 26 Aug., priced at AU$384 found 20 hours ago
American Airlines
Thu, 14 Aug. - Wed, 27 Aug.
BWI
Baltimore
SEA
Seattle
AU$401 Return, found 6 days ago
AU$401
Return
found 6 days ago
Select American Airlines flight, departing Thu, 14 Aug. from Baltimore to Seattle, returning Wed, 27 Aug., priced at AU$401 found 6 days ago
Alaska Airlines
Tue, 19 Aug. - Tue, 26 Aug.
DCA
Washington
SEA
Seattle
AU$423 Return, found 20 hours ago
AU$423
Return
found 20 hours ago
Select Alaska Airlines flight, departing Tue, 19 Aug. from Washington to Seattle, returning Tue, 26 Aug., priced at AU$423 found 20 hours ago
Delta
Tue, 19 Aug. - Tue, 26 Aug.
DCA
Washington
SEA
Seattle
AU$423 Return, found 20 hours ago
AU$423
Return
found 20 hours ago
Select Delta flight, departing Tue, 19 Aug. from Washington to Seattle, returning Tue, 26 Aug., priced at AU$423 found 20 hours ago
United
Tue, 19 Aug. - Tue, 26 Aug.
BWI
Baltimore
SEA
Seattle
AU$530 Return, found 20 hours ago
AU$530
Return
found 20 hours ago
Select United flight, departing Tue, 19 Aug. from Baltimore to Seattle, returning Tue, 26 Aug., priced at AU$530 found 20 hours ago
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