Cheap flights from Seoul to Washington from $453

The month of November is, on average, the cheapest month to fly to State of Washington from Seoul, with most prices found around $571. If you aren’t able to travel to State of Washington during the month of November, then flying in December is also cheap. Prices for this month can be found on momondo for an average of $621.

The cheapest day to depart from Seoul to State of Washington is on a Monday. Travelers who choose to depart for State of Washington on a Monday will often find tickets for as low as $735. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from Seoul to State of Washington for around $944.

The cheapest time of day to fly to State of Washington is in the evening when flights can be purchased for as low as $847. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $862 on average. Flights to State of Washington from Seoul in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

Fly from Incheon Intl to Seattle/Tacoma Intl for the best Seoul - Washington flight prices

You are more likely to see cheaper flights to State of Washington from Seoul when booking weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around $816 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to State of Washington from Seoul for as low as $626 on momondo.

There are 3 cabin classes available to choose from on Seoul to State of Washington flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

United Airlines, Philippine Airlines, and China Airlines are the most popular carriers operating from Seoul to Washington

Asiana Airlines, Korean Air and Delta are the top three most popular airlines that fly to State of Washington from Seoul according to our data. Asiana Airlines is the first choice among our users, with 40% of people opting to fly with this airline when traveling to State of Washington. Keep in mind that there are 4 different airlines that fly to State of Washington on a routine basis, so you have a few additional options to choose from.

6 flights are operational daily from Seoul to State of Washington as of September 2026. The most popular departure time for this route is 7:00PM, with 72% of flights per day taking off in the evening.

The number of flights available between Seoul and State of Washington is 43 per week as of September 2026. The most frequent departure day is Mon, with 19% of weekly flights leaving on this day.