starting at $633
starting at $476
starting at $648
starting at $365
starting at $464
starting at $467
Flaut.Travel was designed and developed by a team dedicated to making the process of searching, comparing and booking airline tickets as easy and convenient as possible. Our service helps travelers to find and buy the cheapest flights from Seattle to Seoul. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.
A non-stop flight is the most convenient and comfortable way to fly from Seattle to Seoul, despite the fact that sometimes flights with transfers can cost significantly less.
•
•
•
•
•
•
Answers to questions about the route that travelers are most interested in.
We keep tight track on airlines' pre-holidays sales and other special offers occurences all the time to let you save maximum amount of funds while traveling to your family or just going out on vacation.
More than 6 airlines operate flights from Seattle to Seoul, including Korean Air, Alaska Airlines, Asiana Airlines, Westjet, United Airlines, and Frontier Airlines. This is a popular route, so passengers can choose tickets based on budget and preferences. Ticket prices start from $365, and our service lets you instantly compare all options. The variety of offers simplifies planning: you can choose budget fares or more comfortable options with baggage included or extra services. We help you find the best deals so your trip is cost-efficient.
starting at $633
starting at $476
starting at $648
starting at $365
starting at $464
starting at $467
Seattle — Seoul
08/27/2026
Departure
Direct flight
KE42
starting at $633
Seattle — Seoul
07/18/2026
Departure
Direct flight
AS119
starting at $476
Seattle — Seoul
08/25/2026
Departure
Direct flight
OZ271
starting at $648
There are most likely no direct flights on the Seattle — Seoul route
The cheapest one-way flight from Seattle to Seoul departs on 08/27/2026, is operated by Westjet and costs $365
The cheapest roundtrip flight from Seattle to Seoul departs on 09/15/2026, is operated by Cathay Pacific and costs $751
Fastest flight from Seattle to Seoul takes 16h 15m
There are direct flights on this route 3 days a week: Tu, Th, and Sa
The distance between Seattle and Seoul is 8321km (5159 miles). The average flight duration is 12h 20m. There are 3 direct flights from Seattle to Seoul. The time difference between Seattle and Seoul is 17h. Flights from Seattle begin at 12:50 PM. The latest flight from Seattle departs at 12:55 AM
The cheapest flight ticket from Seattle to Seoul according to data for the last 48 hours costs $365
Often the best time to buy tickets from Seattle to Seoul is 2 months before departure.
Based on statistics over the past years, the lowest prices for flights from Seattle to Seoul can be found flying in these months: August, September, June.
The fastest flights from Seattle to Seoul start from 16 hours 15 minutes in the air.
The following airlines operate direct flights on the route Seattle — Seoul: Korean Air, Alaska Airlines, Asiana Airlines
The cost of a one-way flight from Seattle to Seoul ranges from $357 (August 2026) to $599 (July 2026). On average, the ticket price is about $464–$475.
Ticket prices for Seattle — Seoul are higher at the start and end of the period but lowest in the middle. This creates a convenient window for booking at a reduced price.
Prices fall from July 2026 to August 2026 (40%), then rise from June 2026 to July 2026 (+26%). The best period is August 2026–September 2026 ($391), the most expensive is June 2026–July 2026 ($537).
The best time to buy is August 2026–September 2026, when prices are at their lowest. This can save you up to 27% compared to the expensive months (June 2026–July 2026).
Monthly price variation is 19.1%. On this route, your departure date noticeably affects the cost, and choosing wisely can lead to real savings.
We couldn't find any special offers for flights from Seattle to Seoul