Flights to Northwest Washington from Bangkok - ￥62,230

View ￥62,230 flight on Tue, Nov 18, 2025Opens in a new window

Popular airlines from Bangkok to Northwest Washington

  • Peach

    Peach

  • Skymark Airlines

    Skymark Airlines

  • All Nippon Airways

    All Nippon Airways

  • Japan Airlines

    Japan Airlines

  • Jetstar Japan

    Jetstar Japan

  • Solaseed Air

    Solaseed Air

  • STARFLYER

    STARFLYER

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 40% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Bangkok to Northwest Washington (BKK-SEA)

Prices were available within the past 7 days and start at ￥62,230 for one-way flights and ￥100,350 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Philippine Airlines
Tue, Sep 9 - Sun, Sep 21
BKK
Bangkok
SEA
Seattle
￥100,350 Roundtrip, found 4 days ago
￥100,350
Roundtrip
found 4 days ago
Select Philippine Airlines flight, departing Tue, Sep 9 from Bangkok to Seattle, returning Sun, Sep 21, priced at ￥100,350 found 4 days ago
STARLUX Airlines
Mon, Feb 9 - Mon, Feb 16
BKK
Bangkok
SEA
Seattle
￥110,960 Roundtrip, found 5 days ago
￥110,960
Roundtrip
found 5 days ago
Select STARLUX Airlines flight, departing Mon, Feb 9 from Bangkok to Seattle, returning Mon, Feb 16, priced at ￥110,960 found 5 days ago
Korean Air
Mon, Feb 9 - Mon, Feb 16
BKK
Bangkok
SEA
Seattle
￥121,680 Roundtrip, found 5 days ago
￥121,680
Roundtrip
found 5 days ago
Select Korean Air flight, departing Mon, Feb 9 from Bangkok to Seattle, returning Mon, Feb 16, priced at ￥121,680 found 5 days ago
Delta
Mon, Feb 9 - Mon, Feb 16
BKK
Bangkok
SEA
Seattle
￥121,720 Roundtrip, found 5 days ago
￥121,720
Roundtrip
found 5 days ago
Select Delta flight, departing Mon, Feb 9 from Bangkok to Seattle, returning Mon, Feb 16, priced at ￥121,720 found 5 days ago
Asiana Airlines
Tue, Sep 9 - Sun, Sep 21
BKK
Bangkok
SEA
Seattle
￥125,170 Roundtrip, found 4 days ago
￥125,170
Roundtrip
found 4 days ago
Select Asiana Airlines flight, departing Tue, Sep 9 from Bangkok to Seattle, returning Sun, Sep 21, priced at ￥125,170 found 4 days ago
United
Mon, Feb 9 - Mon, Feb 16
BKK
Bangkok
SEA
Seattle
￥129,980 Roundtrip, found 5 days ago
￥129,980
Roundtrip
found 5 days ago
Select United flight, departing Mon, Feb 9 from Bangkok to Seattle, returning Mon, Feb 16, priced at ￥129,980 found 5 days ago
*Available to Expedia members.