Seattle to Seoul flights
The cheapest round trip we found from Seattle to Seoul is $840 (Jan 18 – Feb 2, 2027, 1 stop), 1% below the usual $852.
SEA to SEL · Round trip · Economy · Prices per person in USD · Price found (3 days ago)
Cheapest found
Cheapest round trip by month
Lowest fare found per departure month| Month | Cheapest round trip |
|---|---|
| November 2026 | No fares found yet |
| December 2026 | No fares found yet |
| January 2027 | $840 (cheapest month) |
| February 2027 | $852 |
| March 2027 | No fares found yet |
| April 2027 | $994 |
Cheapest dates in the next 4 months
Round trip, per person-
Jan 18 – Feb 2, 2027 15 nights · leave Mon$840$840 Book
Cathay Pacific 1 stop · 17h 55m -
Feb 16 – Mar 4, 2027 16 nights · leave Tue$852$852 Book
Cathay Pacific 1 stop · 17h 55m
-
Feb 15 – Mar 3, 2027 16 nights · leave Mon$900 +6% vs usual$900 +6% vs usual Book
Cathay Pacific 1 stop · 17h 55m
-
Feb 14 – Mar 2, 2027 16 nights · leave Sun$934 +10% vs usual$934 +10% vs usual Book
Alaska Airlines 2 stops · 21h 18m
Prices change often. The booking site shows the final price before you pay. Other dates? Set an alert
Things to do in Seoul
Tickets and tours on KlookTo see tours and tickets here, turn on partner content in .
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Airport transfer to Seoul
Fixed prices from ICN on KiwitaxiTo see transfer prices here, turn on partner content in .
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Plan the rest of your trip
Seoul · Jan 18 – Feb 2, 2027- eSIM for South Korea Yesim · prepaid mobile data (opens Yesim in a new tab)
- Car rental in South Korea Economybookings · compare rental companies (opens Economybookings in a new tab)
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Flights to Seoul from other cities
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- Shenzhen $240 −16%
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Seattle to Seoul: questions
How much does a flight from Seattle to Seoul cost?
The cheapest round trip we have found right now is $840, leaving January 18 and returning February 2. The usual price on this route is about $852, so this fare is 1% less. Prices are per person, economy, in USD.
What is the cheapest month to fly from Seattle to Seoul?
January 2027, with round trips from $840. The most expensive month in our data is April (from $994). Based on the 3 months ahead we have prices for.
Which airports do Seattle to Seoul flights use?
Seattle airports include Seattle-Tacoma International (SEA) and Boeing Field International (BFI). Seoul airports include Incheon International (ICN) and Gimpo International (GMP). The prices on this page cover every airport in both cities (SEA and SEL are the city codes).
About this route
We track round-trip economy fares from Seattle (United States) to Seoul (South Korea) using Travelpayouts / Aviasales data. The cheapest round trip we've found is $840, departing January 18 and returning February 2, about 1% below the usual $852. The cheapest month to fly in our data is January, from $840. Prices are per person and were correct when found; the final price is set by the airline or booking site when you book.