Cheap flights from South Korea to Washington from $438

The month of March is, on average, the cheapest month to fly to State of Washington from South Korea, with most prices found around $742. If you aren’t able to travel to State of Washington during the month of March, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $754.

The cheapest day to depart from South Korea to State of Washington is on a Tuesday. Travelers who choose to depart for State of Washington on a Tuesday will often find tickets for as low as $884. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from South Korea to State of Washington for around $1,174.

The cheapest time of day to fly to State of Washington is in the evening when flights can be purchased for as low as $934. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,098 on average. Flights to State of Washington from South Korea 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 South Korea - Washington flight prices

You are more likely to see cheaper flights to State of Washington from South Korea when booking weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around $902 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 South Korea for as low as $708 on momondo.

There are 3 cabin classes available to choose from on South Korea 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, Alaska Airlines, and Philippine Airlines are the most popular carriers operating from South Korea to Washington

Korean Air, Asiana Airlines and Delta are the top three most popular airlines that fly to State of Washington from South Korea according to our data. Korean Air is the first choice among our users, with 43% 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.

As of November 2026, 5 flights take off from South Korea and land in State of Washington each day. The most common flight departure time for this route is 4:00PM, with 66% of daily flights taking off in the evening.

As of November 2026, 38 flights take off from South Korea and land in State of Washington each week. The most common flight departure day for this route is Mon, with 18% of weekly flights taking off on this day.