Cheap flights from Seattle to Seoul from $389
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 11/3. 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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Korean Air flights from Seattle to Seoul
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Fly from
Fly to
Route
Depart
Return
SeattleIncheon
SEA Seattle/Tacoma Intl - ICN Incheon Intl
SEAICN
Seattle/Tacoma Intl
Fri 11/27
4:45 pm-1:50 pm
2 stops28h 05m
Incheon Intl
Sun 12/6
3:00 pm-8:45 am
1 stop34h 45m
SeattleIncheon
SEA Seattle/Tacoma Intl - ICN Incheon Intl
SEAICN
Seattle/Tacoma Intl
Mon 11/23
6:03 pm-12:45 pm
2 stops25h 42m
Incheon Intl
Fri 12/11
3:00 pm-8:45 am
1 stop34h 45m
SeattleIncheon
SEA Seattle/Tacoma Intl - ICN Incheon Intl
SEAICN
Seattle/Tacoma Intl
Sat 10/24
11:45 am-1:50 pm
1 stop34h 05m
Incheon Intl
Fri 11/6
10:00 am-8:45 am
1 stop39h 45m
SeattleIncheon
SEA Seattle/Tacoma Intl - ICN Incheon Intl
SEAICN
Seattle/Tacoma Intl
Thu 3/18
11:25 am-12:40 am
1 stop21h 15m
Incheon Intl
Thu 3/25
6:45 am-9:45 am
1 stop19h 00m
SeattleIncheon
SEA Seattle/Tacoma Intl - ICN Incheon Intl
SEAICN
Seattle/Tacoma Intl
Sun 11/1
7:05 pm-5:10 pm
1 stop29h 05m
Incheon Intl
Wed 11/11
6:55 pm-2:37 pm
1 stop12h 42m
SeattleIncheon
SEA Seattle/Tacoma Intl - ICN Incheon Intl
SEAICN
Seattle/Tacoma Intl
Wed 11/18
10:10 am-5:10 pm
1 stop14h 00m
Incheon Intl
Wed 11/25
6:55 pm-2:37 pm
1 stop12h 42m
SeattleIncheon
SEA Seattle/Tacoma Intl - ICN Incheon Intl
SEAICN
Seattle/Tacoma Intl
Mon 10/19
12:50 pm-4:40 pm
Nonstop11h 50m
Incheon Intl
Sun 11/1
9:20 pm-2:10 pm
Nonstop9h 50m
SeattleIncheon
SEA Seattle/Tacoma Intl - ICN Incheon Intl
SEAICN
Seattle/Tacoma Intl
Mon 10/26
7:16 am-5:40 pm
1 stop18h 24m
Incheon Intl
Tue 11/3
4:10 pm-9:05 am
Nonstop9h 55m
SeattleIncheon
SEA Seattle/Tacoma Intl - ICN Incheon Intl
SEAICN
Seattle/Tacoma Intl
Mon 11/9
12:30 pm-5:45 pm
Nonstop12h 15m
Incheon Intl
Mon 11/16
6:45 pm-11:51 am
Nonstop10h 06m
SeattleIncheon
SEA Seattle/Tacoma Intl - ICN Incheon Intl
SEAICN
Seattle/Tacoma Intl
Thu 11/5
12:30 pm-5:45 pm
Nonstop12h 15m
Incheon Intl
Thu 11/12
6:45 pm-11:51 am
Nonstop10h 06m
See travel insights to Seoul from
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 typical price of a round-trip flight between Seattle and Seoul?
Prices are currently typical for flights on this route.
Typical prices usually range from $885 to $1,309.The lowest price recently found on this route was $935.
What is the cheapest month to fly to Seoul?
The month of August is another great option to travel to Seoul, with average flight prices from Seattle averaging around $376.
What is the cheapest day to depart on your flight to Seoul?
According to our data, Wednesday is the cheapest day to fly to Seoul from Seattle. The lowest ticket price found for a Wednesday departure recently was $662. 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 Friday, with ticket prices averaging around $864.
What is the cheapest time of day to depart on your flight to Seoul?
Flying to Seoul from Seattle at noon is the least expensive time of day to depart. momondo users have found prices as low as $368 when looking at flights departing at noon. In the morning is when there is more demand to fly to Seoul, so prices are often more expensive at around $878 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 from Seattle 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 $871 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 $560 on momondo.
What cabin class options are available on Seattle to Seoul flights?
There are 3 cabin classes available to choose from on Seattle 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?
You could potentially save up to 25% on your flight if you consider stops on a Seattle to Seoul flight.
How have Seattle to Seoul flight prices changed over time?
As of October 2026, prices for Seattle to Seoul flights are approximately 9% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Seattle/Tacoma Intl to Seoul?
Cathay Pacific, Delta, and Korean Air are the most popular carriers operating from Seattle/Tacoma Intl to Seoul
What airlines fly to Seoul?
Alaska Airlines, Korean Air and Asiana Airlines are the top three most popular airlines that fly to Seoul from Seattle according to our data. Alaska Airlines is the first choice among our users, with 58% of people opting to fly with this airline when traveling to Seoul. Keep in mind that there are 6 different airlines that fly to Seoul on a routine basis, so you have a few additional options to choose from.
Which airport is the most popular layover for flights between Seattle and Seoul?
Vancouver (YVR) was the most common stop: 44% of momondo users choosing 1-stop flights on this route connected there.
Which layover airport offers the lowest fares from Seattle to Seoul?
Flights via Hong Kong (HKG) offer the lowest average round-trip price of $737.
Which layover airport has the shortest travel time from Seattle to Seoul?
Flights connecting via Vancouver (YVR) have the shortest average one-way travel time: 14h 31m.
Which layover airport has the shortest connection time from Seattle to Seoul?
San Francisco (SFO) has the shortest average layover time for this route: 1h 32m.
How many flights depart from Seattle to Seoul on average per day?
As of October 2026, 6 flights take off from Seattle and land in Seoul each day. The most common flight departure time for this route is 1:00PM, with 64% of daily flights taking off in the afternoon.
How many flights depart from Seattle to Seoul on average per week?
48 flights are operational weekly from Seattle to Seoul as of October 2026. The most popular departure day for this route is Wed, with 21% 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
Frequently asked questions about flying 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 11h 45m.
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 6 as of October 2026.
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 (33.66% of total bookings). The next most popular plane models are Airbus A350-900 (23.12%), Boeing 787-9 Dreamliner (19.80%), and Boeing 777-200/200ER (9.34%).
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 29% of all bookings. The subsequent popular airlines are Delta at 28%, Asiana Airlines at 17%, and Alaska Airlines at 15%.
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 $335 | Free Cancellation | Rating 7.9 13,036 reviews | |||
| PriceFrom $523 | Free Cancellation | Rating 7.1 11,744 reviews | |||
| PriceFrom $686 | Free Cancellation | Rating 7.6 1,511 reviews | |||
| PriceFrom $793 | Free Cancellation | Rating 8.1 563 reviews | |||
| PriceFrom $849 | Free Cancellation | Rating 8.4 1,217 reviews | |||
| PriceFrom $849 | Free Cancellation | Rating 7.8 8,641 reviews |
Korean Air Flights From Seattle to Seoul
Korean Air operates around 14 flights from Seattle to Seoul every week. The average price of these flights found in the last 72 hours has been $1,105, but momondo users have found Korean Air deals from Seattle to Seoul from as low as $849 round-trip. Korean Air has been scored 8.4/10 in 1,217 reviews.
Asiana Airlines Flights From Seattle to Seoul
Asiana Airlines (8.1/10 from 563 reviews) operates around 2 flights from Seattle to Seoul in any given week. The average Asiana Airlines airfare for this route is around $897, with deals from around $793 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.