Cheap flights from Incheon to Northwest Washington

View AU$838 flight on Tue, 16 Sep. 2025Opens in a new window

Popular airlines from Incheon to Northwest Washington

  • Jetstar

    Jetstar

  • Qantas Airways

    Qantas Airways

  • Virgin Australia

    Virgin Australia

  • Scoot

    Scoot

  • American Airlines

    American Airlines

  • Emirates

    Emirates

  • United

    United

  • 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 35% 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 Incheon (SEL) 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.

Alaska Airlines
Fri, 7 Nov. - Wed, 12 Nov.
ICN
Seoul
SEA
Seattle
AU$772 Return, found 4 days ago
AU$772
Return
found 4 days ago
Select Alaska Airlines flight, departing Fri, 7 Nov. from Seoul to Seattle, returning Wed, 12 Nov., priced at AU$772 found 4 days ago
United
Fri, 7 Nov. - Wed, 12 Nov.
ICN
Seoul
SEA
Seattle
AU$798 Return, found 4 days ago
AU$798
Return
found 4 days ago
Select United flight, departing Fri, 7 Nov. from Seoul to Seattle, returning Wed, 12 Nov., priced at AU$798 found 4 days ago
Asiana Airlines
Thu, 23 Oct. - Wed, 29 Oct.
ICN
Seoul
SEA
Seattle
AU$879 Return, found 5 days ago
AU$879
Return
found 5 days ago
Select Asiana Airlines flight, departing Thu, 23 Oct. from Seoul to Seattle, returning Wed, 29 Oct., priced at AU$879 found 5 days ago
Delta
Fri, 7 Nov. - Wed, 12 Nov.
ICN
Seoul
SEA
Seattle
AU$906 Return, found 4 days ago
AU$906
Return
found 4 days ago
Select Delta flight, departing Fri, 7 Nov. from Seoul to Seattle, returning Wed, 12 Nov., priced at AU$906 found 4 days ago
Korean Air
Fri, 7 Nov. - Wed, 12 Nov.
ICN
Seoul
SEA
Seattle
AU$932 Return, found 4 days ago
AU$932
Return
found 4 days ago
Select Korean Air flight, departing Fri, 7 Nov. from Seoul to Seattle, returning Wed, 12 Nov., priced at AU$932 found 4 days ago
American Airlines
Tue, 9 Sep. - Tue, 16 Sep.
ICN
Seoul
SEA
Seattle
AU$1,061 Return, found 6 days ago
AU$1,061
Return
found 6 days ago
Select American Airlines flight, departing Tue, 9 Sep. from Seoul to Seattle, returning Tue, 16 Sep., priced at AU$1,061 found 6 days ago
*Available to Expedia members.