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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.
1 adult
0 bags

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Cheap round-trip flights

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10:00 am - 4:05 pmSEA-ICN
14h 05m1 stop
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9:45 am - 6:36 pmICN-SEA
24h 51m2 stops
Mon, Sep 1 - Wed, Sep 17
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7:15 pm - 4:05 pmSEA-ICN
28h 50m1 stop
 Logo
9:45 am - 6:36 pmICN-SEA
24h 51m2 stops
Sun, Sep 7 - Wed, Sep 17
 Logo
10:00 am - 8:10 pmSEA-ICN
18h 10m2 stops
 Logo
9:45 am - 6:36 pmICN-SEA
24h 51m2 stops
Mon, Sep 1 - Wed, Sep 17
 Logo
10:00 am - 4:05 pmSEA-ICN
14h 05m1 stop
 Logo
9:50 am - 7:16 pmICN-SEA
25h 26m2 stops
Mon, Sep 1 - Sun, Oct 26
Air Canada Logo
5:30 am - 4:05 pmSEA-ICN
18h 35m1 stop
Air Canada Logo
5:45 pm - 10:16 pmICN-SEA
20h 31m1 stop
$739Air Canada
Find Deal
Mon, Sep 1 - Wed, Sep 10
Air Canada Logo
7:15 pm - 4:05 pmSEA-ICN
28h 50m1 stop
Air Canada Logo
5:45 pm - 2:16 pmICN-SEA
12h 31m1 stop
$776Air Canada
Find Deal
Sun, Sep 7 - Sun, Sep 21
WestJet Logo
8:40 am - 6:45 pmSEA-ICN
18h 05m1 stop
WestJet Logo
8:45 pm - 12:33 pmICN-SEA
31h 48m2 stops
$839WestJet
Find Deal
Fri, Sep 26 - Thu, Oct 9
China Eastern Logo
7:10 am - 11:00 amSEA-GMP
35h 50m2 stops
China Eastern Logo
8:50 pm - 4:59 pmGMP-SEA
36h 09m2 stops
$943China Eastern
Find Deal
Mon, Sep 1 - Wed, Sep 17
EVA Air Logo
1:30 am - 12:50 pmSEA-GMP
19h 20m1 stop
EVA Air Logo
1:50 pm - 5:40 pmGMP-SEA
20h 50m1 stop
$1,025EVA Air
Find Deal
Wed, Oct 1 - Sat, Nov 8
EVA Air Logo
12:10 am - 12:50 pmSEA-GMP
19h 40m1 stop
EVA Air Logo
1:50 pm - 6:10 pmGMP-SEA
21h 20m1 stop
$1,087EVA Air
Find Deal
Thu, Nov 20 - Fri, Nov 28

Air Canada flights from Seattle to Seoul

Our best Air Canada deals on Seattle to Seoul flight tickets
Air Canada
Sep 1
SEA5:30 amSeattle/Tacoma Intl
18h 35m
1 stop
ICN4:05 pmIncheon Intl
Sep 10
ICN5:45 pmIncheon Intl
20h 31m
1 stop
SEA10:16 pmSeattle/Tacoma Intl
Air Canada
Sep 7
SEA7:15 pmSeattle/Tacoma Intl
28h 50m
1 stop
ICN4:05 pmIncheon Intl
Sep 21
ICN5:45 pmIncheon Intl
12h 31m
1 stop
SEA2:16 pmSeattle/Tacoma Intl
Air Canada
Oct 15
SEA7:15 pmSeattle/Tacoma Intl
28h 50m
1 stop
ICN4:05 pmIncheon Intl
Oct 24
ICN5:45 pmIncheon Intl
12h 31m
1 stop
SEA2:16 pmSeattle/Tacoma Intl

Korean Air flights from Seattle to Seoul

Our best Korean Air deals on Seattle to Seoul flight tickets
Korean Air
Jul 13
SEA1:20 pmSeattle/Tacoma Intl
11h 20m
ICN4:40 pmIncheon Intl
Jul 29
ICN7:20 pmIncheon Intl
10h 40m
SEA2:00 pmSeattle/Tacoma Intl
Korean Air
Jul 13
SEA3:42 pmSeattle/Tacoma Intl
20h 58m
1 stop
ICN4:40 amIncheon Intl
Jul 29
ICN7:20 pmIncheon Intl
10h 40m
SEA2:00 pmSeattle/Tacoma Intl
Korean Air
Jul 13
SEA12:45 pmSeattle/Tacoma Intl
11h 45m
ICN4:30 pmIncheon Intl
Jul 29
ICN7:20 pmIncheon Intl
10h 40m
SEA2:00 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 $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.

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

$398

Fastest flight time

11h 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 $398. The best round-trip flight deal from Seattle to Seoul found on momondo in the last 72 hours is $624.
The fastest flight from Seattle to Seoul takes 11h 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 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?

  • 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
DeltaPriceFrom $167Free CancellationRating
8.0
7,962 reviews
Search Delta flights
Alaska AirlinesPriceFrom $182Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $282Free CancellationRating
7.4
8,844 reviews
Search United Airlines flights
Hawaiian AirlinesPriceFrom $763Free CancellationRating
7.8
2,552 reviews
Search Hawaiian Airlines flights
Air CanadaPriceFrom $813Free CancellationRating
7.1
9,680 reviews
Search Air Canada flights
China AirlinesPriceFrom $886Free CancellationRating
8.3
744 reviews
Search China Airlines flights
Asiana AirlinesPriceFrom $907Free CancellationRating
8.2
454 reviews
Search Asiana Airlines flights
Korean AirPriceFrom $966Free CancellationRating
8.4
1,104 reviews
Search Korean Air flights
Turkish AirlinesPriceFrom $970Free CancellationRating
7.3
3,893 reviews
Search Turkish Airlines flights
EVA AirPriceFrom $978Free CancellationRating
8.4
1,212 reviews
Search EVA Air flights
  • 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.


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1 adult
Sun 7/13
Sun 7/20

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