Cheap flights from Seoul to Seattle from $463

In general, November is the cheapest month to fly from Seoul to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $583. If you don’t want to visit Seattle in November, then you should wait until December to fly from Seoul, when ticket prices are also cheap, with an average price of $619.

On average, the least expensive day to fly to Seattle from Seoul is on a Monday. momondo users have found tickets for Monday departures for as low as $735. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Wednesday is the most expensive day to depart from Seoul because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $944.

Flying to Seattle from Seoul in the evening is the least expensive time of day to depart. momondo users have found prices as low as $824 when looking at flights departing in the evening. Flights to Seattle are more costly in the afternoon, with an average ticket price of $835. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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

You are more likely to see cheaper flights to Seattle from Seoul when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $802 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Seoul for as low as $589 on momondo.

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

Hainan Airlines, Philippine Airlines, and United Airlines are the most popular carriers operating from Seoul to Seattle/Tacoma Intl

Asiana Airlines, Korean Air and Delta are the top three most popular airlines that fly to Seattle from Seoul according to our data. Asiana Airlines is the first choice among our users, with 37% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 5 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

As of September 2026, there are 7 flights per day flying from Seoul to Seattle. The most common time of day flights depart is 7:00PM, with 73% of flights taking off in the evening.

The number of flights available between Seoul and Seattle is 52 per week as of September 2026. The most frequent departure day is Fri, with 17% of weekly flights leaving on this day.