Flights to Northwest Washington from Detroit - ￥14,370

View ￥14,370 flight on Wed, Sep 17, 2025Opens in a new window

Popular airlines from Detroit to Northwest Washington

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Cheap Flights from Detroit to Northwest Washington (DTT-SEA)

Prices were available within the past 7 days and start at ￥14,370 for one-way flights and ￥29,160 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Aug 19 - Tue, Aug 26
DTW
Detroit
SEA
Seattle
￥29,160 Roundtrip, found 5 hours ago
￥29,160
Roundtrip
found 5 hours ago
Select Delta flight, departing Tue, Aug 19 from Detroit to Seattle, returning Tue, Aug 26, priced at ￥29,160 found 5 hours ago
Delta
Tue, Aug 19 - Tue, Aug 26
DTW
Detroit
SEA
Seattle
￥30,600 Roundtrip, found 5 hours ago
￥30,600
Roundtrip
found 5 hours ago
Select Delta flight, departing Tue, Aug 19 from Detroit to Seattle, returning Tue, Aug 26, priced at ￥30,600 found 5 hours ago
American Airlines
Tue, Aug 19 - Tue, Aug 26
DTW
Detroit
SEA
Seattle
￥32,040 Roundtrip, found 5 hours ago
￥32,040
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Tue, Aug 19 from Detroit to Seattle, returning Tue, Aug 26, priced at ￥32,040 found 5 hours ago
American Airlines
Tue, Aug 19 - Tue, Aug 26
DTW
Detroit
SEA
Seattle
￥35,800 Roundtrip, found 5 hours ago
￥35,800
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Tue, Aug 19 from Detroit to Seattle, returning Tue, Aug 26, priced at ￥35,800 found 5 hours ago
American Airlines
Tue, Aug 19 - Tue, Aug 26
DTW
Detroit
SEA
Seattle
￥40,320 Roundtrip, found 5 hours ago
￥40,320
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Tue, Aug 19 from Detroit to Seattle, returning Tue, Aug 26, priced at ￥40,320 found 5 hours ago
United
Tue, Aug 19 - Tue, Aug 26
DTW
Detroit
SEA
Seattle
￥46,420 Roundtrip, found 5 hours ago
￥46,420
Roundtrip
found 5 hours ago
Select United flight, departing Tue, Aug 19 from Detroit to Seattle, returning Tue, Aug 26, priced at ￥46,420 found 5 hours ago
*Available to Expedia members.