Cheap flights from Seattle to Seoul from $398
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Seoul departing on 9/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Air Canada flights from Seattle to Seoul
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Korean Air flights from Seattle to Seoul
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How to get the cheapest flight ticket from Seattle to Seoul
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Seoul?
The month of January is another great option to travel to Seoul, with average flight prices from Seattle averaging around $976.
What is the cheapest day to depart on your flight to Seoul?
According to our data, Monday is the cheapest day to fly to Seoul from Seattle. The lowest ticket price found for a Monday departure recently was $879. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Seoul is Saturday, with ticket prices averaging around $1,033.
What is the cheapest time of day to depart on your flight to Seoul?
Flying to Seoul from Seattle in the evening is the least expensive time of day to depart. momondo users have found prices as low as $794 when looking at flights departing in the evening. In the afternoon is when there is more demand to fly to Seoul, so prices are often more expensive at around $1,401 per ticket.
What is the cheapest Seattle/Tacoma Intl to Seoul flight route?
Fly from Seattle/Tacoma Intl to Incheon Intl for the best Seattle/Tacoma Intl - Seoul flight prices
How far in advance should I book a flight to Seoul?
You are more likely to see cheaper flights to Seoul from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Seoul for around $1,220 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seoul from Seattle for as low as $1,059 on momondo.
What cabin class options are available on Seattle/Tacoma Intl to Seoul flights?
There are 3 cabin classes available to choose from on Seattle/Tacoma Intl to Seoul flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
Can stopping save me money on Seattle to Seoul flights?
No. A direct flight is the cheapest option for a flight between Seattle to Seoul.
How have Seattle to Seoul flight prices changed over time?
As of July 2025, prices for Seattle to Seoul flights are approximately 2% more expensive when compared to flights at the same time last year.
What is the cheapest airline that flies from Seattle/Tacoma Intl to Seoul?
Korean Air, WestJet, and Air Canada are the most popular carriers operating from Seattle/Tacoma Intl to Seoul
What airlines fly to Seoul?
Korean Air, Asiana Airlines and Air Canada are the top three most popular airlines that fly to Seoul from Seattle 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 Seoul. Keep in mind that there are 10 different airlines that fly to Seoul on a routine basis, so you have a few additional options to choose from.
How many flights depart from Seattle to Seoul on average per day?
As of July 2025, 8 flights take off from Seattle and land in Seoul each day. The most common flight departure time for this route is 2:00PM, with 100% of daily flights taking off in the afternoon.
How many flights depart from Seattle to Seoul on average per week?
57 flights are operational weekly from Seattle to Seoul as of July 2025. The most popular departure day for this route is Mon, with 18% of flights per week taking off on this day.
When to book flights from Seattle to Seoul
Cheap Seattle to Seoul (SEA to SEL) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Seattle to Seoul
How far is Seattle/Tacoma Intl to Seoul by plane?
The distance between Seattle/Tacoma Intl and Seoul is about 5167.4 mi. By plane, this route typically takes 14h 05m.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Seoul?
Prices for flights from Seattle/Tacoma Intl Airport to Seoul are updated daily.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Seoul?
The number of operators available for flights from Seattle/Tacoma Intl Airport to Seoul is 10 as of July 2025.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Seoul?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Seoul.
What documentation or ID do you need to fly to Seoul?
The travel and health documents you'll need for your trip to Seoul may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seoul. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Seattle to Seoul?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Seattle to Seoul is Boeing 787-10 Dreamliner (28.11% of total bookings). The next most popular plane models are Airbus A350-900 (19.80%), Boeing 787-9 Dreamliner (17.48%), and Boeing 777-200LR (15.30%).
What is the most popular airline from Seattle to Seoul?
momondo data reveals that the most frequently booked airline on the route from Seattle to Seoul is Korean Air, representing 37% of all bookings. The subsequent popular airlines are Asiana Airlines at 27%, Delta at 15%, and Air Canada at 12%.
Best airlines flying from Seattle to Seoul
Compare and see reviews for airlines that fly from Seattle to Seoul with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $167 | Free Cancellation | Rating 8.0 7,962 reviews | |||
| PriceFrom $182 | Free Cancellation | Rating 8.0 10,000 reviews | |||
| PriceFrom $282 | Free Cancellation | Rating 7.4 8,844 reviews | |||
| PriceFrom $763 | Free Cancellation | Rating 7.8 2,552 reviews | |||
| PriceFrom $813 | Free Cancellation | Rating 7.1 9,680 reviews | |||
| PriceFrom $886 | Free Cancellation | Rating 8.3 744 reviews | |||
| PriceFrom $907 | Free Cancellation | Rating 8.2 454 reviews | |||
| PriceFrom $966 | Free Cancellation | Rating 8.4 1,104 reviews | |||
| PriceFrom $970 | Free Cancellation | Rating 7.3 3,893 reviews | |||
| PriceFrom $978 | Free Cancellation | Rating 8.4 1,212 reviews |
Korean Air Flights From Seattle to Seoul
Korean Air operates around 15 flights from Seattle to Seoul every week. The average price of these flights found in the last 72 hours has been $1,240, but momondo users have found Korean Air deals from Seattle to Seoul from as low as $966 round-trip. Korean Air has been scored 8.4/10 in 1,104 reviews.
Asiana Airlines Flights From Seattle to Seoul
Asiana Airlines (8.2/10 from 454 reviews) operates around 6 flights from Seattle to Seoul in any given week. The average Asiana Airlines airfare for this route is around $1,172, with deals from around $907 rare but found on momondo. Referenced prices are for round-trip Seattle to Seoul flight searches in the last 72 hours.
Why use momondo?
Why should I use momondo to find a flight deal from Seattle to Seoul?
Finding the right flight to Seoul from Seattle is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Seoul quick and easy, saving you time and money.
Can I find flights from Seattle to Seoul with flexible booking policies on momondo?
Yes. All flights to Seoul from Seattle on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Seattle to Seoul?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Seattle to Seoul.
I’m not ready to book a flight from Seattle to Seoul right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Seattle to Seoul flights. All you need is a valid email address and we will do the rest; it is that quick and easy.