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Cheap flights from Seattle to Seoul from $404

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 9/1. 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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0 bags

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Find the cheapest flights from Seattle to Seoul

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from Seattle to Seoul.
 Logo
3:06 pm - 10:15 pmSEA-ICN
39h 09m2 stops
 Logo
6:20 pm - 6:59 pmICN-SEA
16h 39m1 stop
Mon, Apr 21 - Wed, May 7
 Logo
8:13 am - 8:30 pmSEA-ICN
20h 17m1 stop
 Logo
6:20 pm - 2:25 pmICN-SEA
36h 05m2 stops
Wed, Apr 30 - Wed, May 7
 Logo
8:13 am - 8:30 pmSEA-ICN
20h 17m1 stop
 Logo
6:20 pm - 6:59 pmICN-SEA
16h 39m1 stop
Wed, Apr 30 - Wed, May 7
WestJet Logo
7:05 am - 6:45 pmSEA-ICN
19h 40m1 stop
WestJet Logo
8:45 pm - 8:29 pmICN-SEA
15h 44m1 stop
$854WestJet
Find Deal
Wed, Sep 17 - Tue, Sep 23
WestJet Logo
7:05 am - 6:45 pmSEA-ICN
19h 40m1 stop
WestJet Logo
8:45 pm - 8:28 pmICN-SEA
15h 43m1 stop
$860WestJet
Find Deal
Thu, Jun 5 - Tue, Jun 10
China Airlines Logo
1:10 am - 7:35 pmSEA-ICN
26h 25m1 stop
China Airlines Logo
12:35 pm - 7:30 pmICN-SEA
22h 55m1 stop
$897China Airlines
Find Deal
Mon, Apr 14 - Tue, May 6
China Airlines Logo
1:10 am - 7:35 pmSEA-ICN
26h 25m1 stop
China Airlines Logo
8:35 pm - 7:30 pmICN-SEA
14h 55m1 stop
$917China Airlines
Find Deal
Mon, Apr 14 - Thu, May 29
EVA Air Logo
1:30 am - 11:00 amSEA-ICN
17h 30m1 stop
EVA Air Logo
12:00 pm - 7:30 pmICN-SEA
23h 30m1 stop
$974EVA Air
Find Deal
Wed, Sep 3 - Wed, Oct 15
EVA Air Logo
1:30 am - 11:00 amSEA-ICN
17h 30m1 stop
EVA Air Logo
7:45 pm - 7:30 pmICN-SEA
15h 45m1 stop
$978EVA Air
Find Deal
Sun, Sep 28 - Mon, Oct 13
Turkish Airlines Logo
7:10 pm - 5:40 pmSEA-ICN
30h 30m1 stop
Turkish Airlines Logo
10:20 am - 5:15 pmICN-SEA
46h 55m1 stop
$1,039Turkish Airlines
Find Deal
Mon, Apr 14 - Wed, May 21

WestJet flights from Seattle to Seoul

Our best WestJet deals on Seattle to Seoul flight tickets
WestJet
Sep 17
SEA7:05 amSeattle/Tacoma Intl
19h 40m
1 stop
ICN6:45 pmIncheon Intl
Sep 23
ICN8:45 pmIncheon Intl
15h 44m
1 stop
SEA8:29 pmSeattle/Tacoma Intl
WestJet
Jun 5
SEA7:05 amSeattle/Tacoma Intl
19h 40m
1 stop
ICN6:45 pmIncheon Intl
Jun 10
ICN8:45 pmIncheon Intl
15h 43m
1 stop
SEA8:28 pmSeattle/Tacoma Intl
WestJet
Aug 22
SEA1:15 pmSeattle/Tacoma Intl
61h 30m
2 stops
ICN6:45 pmIncheon Intl
Sep 20
ICN8:45 pmIncheon Intl
31h 48m
2 stops
SEA12:33 pmSeattle/Tacoma Intl

China Airlines flights from Seattle to Seoul

Our best China Airlines deals on Seattle to Seoul flight tickets
China Airlines
Apr 14
SEA1:10 amSeattle/Tacoma Intl
26h 25m
1 stop
ICN7:35 pmIncheon Intl
May 6
ICN12:35 pmIncheon Intl
22h 55m
1 stop
SEA7:30 pmSeattle/Tacoma Intl
China Airlines
Apr 14
SEA1:10 amSeattle/Tacoma Intl
26h 25m
1 stop
ICN7:35 pmIncheon Intl
May 29
ICN8:35 pmIncheon Intl
14h 55m
1 stop
SEA7:30 pmSeattle/Tacoma Intl
China Airlines
Apr 28
SEA1:10 amSeattle/Tacoma Intl
18h 05m
1 stop
ICN11:15 amIncheon Intl
May 10
ICN8:35 pmIncheon Intl
14h 55m
1 stop
SEA7:30 pmSeattle/Tacoma Intl

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 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 $926. 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 $1,072.

What is the cheapest time of day to depart on your flight to Seoul?

Flying to Seoul from Seattle in the morning is the least expensive time of day to depart. momondo users have found prices as low as $945 when looking at flights departing in the morning. In the afternoon is when there is more demand to fly to Seoul, so prices are often more expensive at around $1,259 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 3 weeks ahead of your departure date. In general, you can expect to find flights to Seoul for around $1,282 when searching 3 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 $1,153 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.

How have Seattle to Seoul flight prices changed over time?

As of April 2025, prices for Seattle to Seoul flights are approximately 4% more expensive when compared to flights at the same time last year.

When to book flights from Seattle to Seoul

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Seoul according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

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

Best Price Found

$404

Fastest flight time

16h 20m

Direct flights

Every day

Airports in Seoul

2 airports
The best one-way flight to Seoul from Seattle in the past 72 hours is $404. The best round-trip flight deal from Seattle to Seoul found on momondo in the last 72 hours is $793.
The fastest flight from Seattle to Seoul takes 16h 20m
Direct flights go from Seattle to Seoul every day.
There are 2 airports near Seoul: Incheon Intl (ICN), Seoul Gimpo Intl (GMP)

  • 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 16h 20m.

  • 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?

  • 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?

  • What is the most popular airline from Seattle to Seoul?


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
Hawaiian AirlinesPriceFrom $600Free CancellationRating
7.9
2,344 reviews
Search Hawaiian Airlines flights
United AirlinesPriceFrom $660Free CancellationRating
7.4
8,616 reviews
Search United Airlines flights
Air CanadaPriceFrom $835Free CancellationRating
7.0
9,028 reviews
Search Air Canada flights
China AirlinesPriceFrom $862Free CancellationRating
8.2
724 reviews
Search China Airlines flights
DeltaPriceFrom $872Free CancellationRating
8.0
7,897 reviews
Search Delta flights
Asiana AirlinesPriceFrom $925Free CancellationRating
8.2
438 reviews
Search Asiana Airlines flights
Korean AirPriceFrom $966Free CancellationRating
8.4
1,051 reviews
Search Korean Air flights
Turkish AirlinesPriceFrom $970Free CancellationRating
7.3
3,750 reviews
Search Turkish Airlines flights
EVA AirPriceFrom $986Free CancellationRating
8.4
1,170 reviews
Search EVA Air flights
  • Korean Air Flights From Seattle to Seoul

    Korean Air operates around 11 flights from Seattle to Seoul every week. The average price of these flights found in the last 72 hours has been $1,336, 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 1,051 reviews.

  • Asiana Airlines Flights From Seattle to Seoul

    Asiana Airlines (8.2/10 from 438 reviews) operates around 7 flights from Seattle to Seoul in any given week. The average Asiana Airlines airfare for this route is around $1,267, with deals from around $925 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.


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Mon 4/7
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Find better results for your trip to South Korea

Fly into one of these airports located in Seoul

Airports listed have a maximum distance of 30.3 mi from Seoul