Cheapest return flights from Seattle (SEA) to Seoul (GMP)

Cheapest month: March 2027, from $ 1,179. Book in one tap, or open a month for every date.

All destinations from Seattle (SEA)

One-wayReturn

  • November 2026

    25 Nov – 9 Jan 2027 45 nights
    $ 1,563 return
    Cathay Pacific
    Price seen 2 Nov
    November dates

  • March 2027

    8–13 Mar 2027 5 nights
    $ 1,179 return Cheapest month
    EVA Air
    Price seen 2 Nov
    March dates

  • April 2027

    13–23 Apr 2027 10 nights
    $ 1,191 return
    EVA Air
    Price seen 2 Nov
    April dates

  • May 2027

    11 May – 21 Jun 2027 41 nights
    $ 1,315 return
    EVA Air
    Price seen 2 Nov
    May dates

  • June 2027

    15 Jun – 9 Jul 2027 24 nights
    $ 1,697 return
    EVA Air
    Price seen 2 Nov
    June dates

  • August 2027

    13–28 Aug 2027 15 nights
    $ 1,244 return
    EVA Air
    Price seen 2 Nov
    August dates
Powered by

Deals for one-way flights from Seattle to Seoul.

Book a cheap hotel in Seoul

Cheap car rent in Gimpo

Updated Nov 3, 2026.

About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

Feel free to contact us with any feedback or request another flight research.