
Popular airlines from Arlington to Seattle
- American Airlines
American Airlines
- Delta
Delta
- United
United
- Plan, book, fly with confidence
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Cheap Flights from Arlington to Seattle (WAS-SEA)
Prices were available within the past 7 days and start at ¥15,190 for one-way flights and ¥36,820 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Oct 30 - Thu, Nov 6
BWI
Baltimore
SEA
Seattle
¥36,820 Roundtrip, found 2 days ago
¥36,820
Roundtrip
found 2 days ago

Thu, Oct 30 - Thu, Nov 6
BWI
Baltimore
SEA
Seattle
¥38,430 Roundtrip, found 2 days ago
¥38,430
Roundtrip
found 2 days ago

Mon, Aug 18 - Mon, Aug 25
BWI
Baltimore
SEA
Seattle
¥38,450 Roundtrip, found 5 days ago
¥38,450
Roundtrip
found 5 days ago

Sat, Aug 16 - Sat, Aug 30
IAD
Washington
SEA
Seattle
¥40,520 Roundtrip, found 3 days ago
¥40,520
Roundtrip
found 3 days ago

Tue, Aug 19 - Tue, Aug 26
DCA
Washington
SEA
Seattle
¥40,620 Roundtrip, found 3 days ago
¥40,620
Roundtrip
found 3 days ago

Sat, Aug 16 - Tue, Sep 2
IAD
Washington
SEA
Seattle
¥55,140 Roundtrip, found 3 days ago
¥55,140
Roundtrip
found 3 days ago
Find the cheapest month to fly from Washington (DCA) to Seattle (SEA)
September is typically the cheapest month to fly
From ¥20,222 - ¥44,562 per traveler.
Graph displaying average flight prices per month
*Available to Expedia members.