$643 Cheap Korean Air flights Seoul (ICN) to Seattle (SEA)

Landing cheap one-way Korean Air flights from ICN to SEA from $643 on Expedia couldn’t be easier — just filter by “Price (lowest to highest).” Or check out our budget-friendly round-trip fares from $484 for your next getaway.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Korean Air flights to Seattle are generally cheaper in the low-season months of January and February. Whether you need a return or one-way ticket, you could land a better deal then.

Search for Korean Air flights from ICN to SEA about one month before you want to go. The cheapest time to reserve an international flight is generally 18 to 29 days ahead of your travel date when you can save 17% versus booking four to five months in advance. No matter your fare class or itinerary, the best day of the week to book international airfare is usually Sunday. Friday can be the most expensive. Passengers who book on a Sunday can save 17% on average compared to those who book on a Friday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Korean Air operates direct flights from Incheon Intl. Airport (ICN) to Seattle - Tacoma Intl. Airport (SEA), with 7 departures every week. Simply choose the “Nonstop” and “Airline” filters while searching on Expedia to find all direct Korean Air flights to SEA.

Leave Incheon Intl. Airport (ICN) for Seattle - Tacoma Intl. Airport (SEA) on a direct Korean Air flight, and you’ll be in the skies for about 9h 50m.

Taking off from ICN at 4:10PM UTC+9, the first Korean Air flight to SEA lands at 9:00AM UTC-8. Traveling earlier in the day means you’re less likely to encounter cancellations or delays.* Not an early riser? The last Korean Air flight from ICN to SEA departs at 4:10PM UTC+9 and touches down at 9:00AM UTC-8.*Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Korean Air flights from Incheon Intl. Airport (ICN) to Seattle touch down at Seattle - Tacoma Intl. Airport (SEA). This is the main gateway here.

Korean Air allows travelers to bring 2 checked-in bags weighing up to 50 lb with dimensions not exceeding 62 inches on standard economy flights from ICN to SEA. Additionally, you can take 1 cabin bag with you in the cabin. This hand luggage must not exceed 21 inches x 15 inches x 7 inches and weigh no more than 39 lb. Baggage rules can differ depending on your cabin class and fare type, so double-check your booking or Korean Air’s website to avoid any additional costs at the airport.

A 5-star airline rating and the opportunity to collect points through Korean Airlines Skypass are the start of the reasons to leave from ICN to SEA with Korean Air. Plus, when you sign up to our One Key™ program, you can receive OneKeyCash™* on top of Korean Air’s loyalty program earnings. You can put it toward your future trips.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Catch a Korean Air flight from Incheon Intl. Airport (ICN) to Seattle - Tacoma Intl. Airport (SEA), and you’ll likely be seated on a Boeing 787-9. Bear in mind though, that the aircraft type can vary due to operational requirements.

Changes are generally free within 24 hours of making your booking, but your airline may charge you after that time. For more information about altering your flights, check out your “Trips,” select your flight and click on “Manage Booking.” If you’d like the flexibility to make changes without being charged, tick the “Changes included” or “No cancel fee” filter when organizing your next break.