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Cheap flights from South Korea to Seattle from $327

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from South Korea to Seattle departing on 11/25. 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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Find the cheapest flights from South Korea to Seattle

Recent round-trip flight deals from South Korea to Seattle

Alaska Airlines Logo
9:25 pm - 7:21 pmICN-SEA
37h 56m2 stops
Alaska Airlines Logo
7:44 am - 7:00 pmSEA-ICN
19h 16m1 stop
$385Alaska Airlines
Find Deal
Sat, Oct 11 - Sun, Oct 19
Alaska Airlines Logo
9:25 pm - 4:50 pmICN-SEA
35h 25m2 stops
Alaska Airlines Logo
12:50 pm - 7:00 pmSEA-ICN
62h 10m2 stops
$400Alaska Airlines
Find Deal
Sun, Oct 12 - Sun, Oct 19
Alaska Airlines Logo
9:25 pm - 10:52 pmICN-SEA
42h 27m2 stops
Alaska Airlines Logo
6:07 pm - 7:25 pmSEA-ICN
56h 18m2 stops
$401Alaska Airlines
Find Deal
Sun, Nov 2 - Sun, Nov 9
Korean Air Logo
4:40 pm - 10:40 amICN-SEA
10h 00mnonstop
Korean Air Logo
12:50 pm - 4:40 pmSEA-ICN
11h 50mnonstop
$431Korean Air
Find Deal
Thu, Oct 9 - Thu, Oct 23
Korean Air Logo
4:10 pm - 10:00 amICN-SEA
9h 50mnonstop
Korean Air Logo
12:00 pm - 3:55 pmSEA-ICN
11h 55mnonstop
$439Korean Air
Find Deal
Mon, Oct 27 - Fri, Oct 31
Asiana Airlines Logo
9:00 pm - 1:55 pmICN-SEA
9h 55mnonstop
Asiana Airlines Logo
12:10 am - 5:20 amSEA-ICN
12h 10mnonstop
$478Asiana Airlines
Find Deal
Sat, Nov 8 - Sat, Dec 6
Air Canada Logo
6:55 pm - 9:31 amICN-SEA
31h 36m1 stop
Air Canada Logo
3:40 pm - 4:05 pmSEA-ICN
32h 25m1 stop
$531Air Canada
Find Deal
Wed, Dec 17 - Sat, Mar 28
Asiana Airlines Logo
9:00 pm - 1:55 pmICN-SEA
9h 55mnonstop
Asiana Airlines Logo
12:10 am - 5:20 amSEA-ICN
12h 10mnonstop
$532Asiana Airlines
Find Deal
Thu, Nov 6 - Thu, Dec 4
Delta Logo
7:00 am - 1:20 pmPUS-SEA
23h 20m1 stop
Delta Logo
11:30 am - 8:45 pmSEA-PUS
16h 15m1 stop
$739Delta
Find Deal
Sun, Dec 21 - Wed, Dec 31
Delta Logo
12:00 pm - 9:00 amPUS-SEA
14h 00m1 stop
Delta Logo
11:30 am - 10:50 amSEA-PUS
30h 20m1 stop
$741Delta
Find Deal
Sun, Dec 21 - Wed, Dec 31

Korean Air flights from South Korea to Seattle

Our best Korean Air deals on South Korea to Seattle flight tickets
Korean Air
Oct 9
ICN4:40 pmIncheon Intl
10h 00m
SEA10:40 amSeattle/Tacoma Intl
Oct 23
SEA12:50 pmSeattle/Tacoma Intl
11h 50m
ICN4:40 pmIncheon Intl
$431
Find similar
Korean Air
Oct 27
ICN4:10 pmIncheon Intl
9h 50m
SEA10:00 amSeattle/Tacoma Intl
Oct 31
SEA12:00 pmSeattle/Tacoma Intl
11h 55m
ICN3:55 pmIncheon Intl
$439
Find similar
Korean Air
Oct 27
ICN4:10 pmIncheon Intl
9h 50m
SEA10:00 amSeattle/Tacoma Intl
Oct 31
SEA12:00 pmSeattle/Tacoma Intl
11h 55m
ICN3:55 pmIncheon Intl
$440
Find similar

Delta flights from South Korea to Seattle

Our best Delta deals on South Korea to Seattle flight tickets
Delta
Sep 25
ICN7:20 pmIncheon Intl
10h 20m
SEA1:40 pmSeattle/Tacoma Intl
Nov 19
SEA11:00 amSeattle/Tacoma Intl
11h 55m
ICN3:55 pmIncheon Intl
$627
Find similar
Delta
Sep 25
ICN7:20 pmIncheon Intl
10h 20m
SEA1:40 pmSeattle/Tacoma Intl
Oct 28
SEA7:10 amSeattle/Tacoma Intl
18h 30m
1 stop
ICN5:40 pmIncheon Intl
$630
Find similar
Delta
Dec 21
PUS7:00 amBusan Gimhae
23h 20m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
Dec 31
SEA11:30 amSeattle/Tacoma Intl
16h 15m
1 stop
PUS8:45 pmBusan Gimhae
$739
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from South Korea to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated September 24, 2025.
Use the filters below to find and compare flights from South Korea to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Sat 10/11

9:25 pm-7:21 pm

2 stops37h 56m

Seattle/Tacoma Intl

Sun 10/19

7:44 am-7:00 pm

1 stop19h 16m

$385

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Sun 10/12

9:25 pm-4:50 pm

2 stops35h 25m

Seattle/Tacoma Intl

Sun 10/19

12:50 pm-7:00 pm

2 stops62h 10m

$400

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Sun 11/2

9:25 pm-10:52 pm

2 stops42h 27m

Seattle/Tacoma Intl

Sun 11/9

6:07 pm-7:25 pm

2 stops56h 18m

$401

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Thu 10/9

4:40 pm-10:40 am

Nonstop10h 00m

Seattle/Tacoma Intl

Thu 10/23

12:50 pm-4:40 pm

Nonstop11h 50m

$431

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 10/27

4:10 pm-10:00 am

Nonstop9h 50m

Seattle/Tacoma Intl

Fri 10/31

12:00 pm-3:55 pm

Nonstop11h 55m

$439

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Sat 11/8

9:00 pm-1:55 pm

Nonstop9h 55m

Seattle/Tacoma Intl

Sat 12/6

12:10 am-5:20 am

Nonstop12h 10m

$478

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Wed 12/17

6:55 pm-9:31 am

1 stop31h 36m

Seattle/Tacoma Intl

Sat 3/28

3:40 pm-4:05 pm

1 stop32h 25m

$531

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Thu 11/6

9:00 pm-1:55 pm

Nonstop9h 55m

Seattle/Tacoma Intl

Thu 12/4

12:10 am-5:20 am

Nonstop12h 10m

$532

BusanSeattle

PUS - SEA

PUSSEA

Busan Gimhae

Sun 12/21

7:00 am-1:20 pm

1 stop23h 20m

Seattle/Tacoma Intl

Wed 12/31

11:30 am-8:45 pm

1 stop16h 15m

$739

BusanSeattle

PUS - SEA

PUSSEA

Busan Gimhae

Sun 12/21

12:00 pm-9:00 am

1 stop14h 00m

Seattle/Tacoma Intl

Wed 12/31

11:30 am-10:50 am

1 stop30h 20m

$741

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Seattle from

How to get the cheapest flight ticket from South Korea to Seattle

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 Seattle?

In general, June is the cheapest month to fly from South Korea to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $660. If you don’t want to visit Seattle in June, then you should wait until May to fly from South Korea, when ticket prices are also cheap, with an average price of $662.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from South Korea is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $791. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Saturday is the most expensive day to depart from South Korea because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $982.

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

Flying to Seattle from South Korea in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $827 when looking at flights departing in the afternoon. Flights to Seattle are more costly in the morning, with an average ticket price of $922. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest South Korea to Seattle/Tacoma Intl flight route?

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

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from South Korea when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $739 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from South Korea for as low as $641 on momondo.

What cabin class options are available on South Korea to Seattle/Tacoma Intl flights?

There are 4 cabin classes available to choose from on South Korea to Seattle/Tacoma Intl 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 South Korea to Seattle flights?

No. A direct flight is the cheapest option for a flight between South Korea to Seattle.

Cheap South Korea to Seattle flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from South Korea to Seattle

Best Price Found

$451

Fastest flight time

9h 50m

Direct flights

Every day

Airports in Seattle

1 airport
The best one-way flight to Seattle from South Korea in the past 72 hours is $451. The best round-trip flight deal from South Korea to Seattle found on momondo in the last 72 hours is $529.
The fastest flight from South Korea to Seattle takes 9h 50m
Direct flights go from South Korea to Seattle every day.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)
Search flight deals

  • When did momondo last update prices for flights from South Korea to Seattle/Tacoma Intl Airport?

    Prices for flights from South Korea to Seattle/Tacoma Intl Airport were last updated today.

  • How many operators does momondo search for flights from South Korea to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from South Korea to Seattle/Tacoma Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from South Korea to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from South Korea to Seattle?

Best airlines flying from South Korea to Seattle

Compare and see reviews for airlines that fly from South Korea to Seattle with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $472Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
Alaska AirlinesPriceFrom $476Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
Asiana AirlinesPriceFrom $478Free CancellationRating
8.2
483 reviews
Search Asiana Airlines flights
Hawaiian AirlinesPriceFrom $485Free CancellationRating
7.8
2,746 reviews
Search Hawaiian Airlines flights
Korean AirPriceFrom $486Free CancellationRating
8.4
1,143 reviews
Search Korean Air flights
United AirlinesPriceFrom $516Free CancellationRating
7.4
8,928 reviews
Search United Airlines flights
DeltaPriceFrom $623Free CancellationRating
7.9
7,973 reviews
Search Delta flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Leavenworth
Tacoma
SeaTac
Ocean Shores
Renton
Olympia
Lynnwood
Kent
Marysville
Puyallup
Federal Way
Tukwila
Kirkland
Shoreline
Lakewood
Centralia
Fife
Cle Elum
Redmond
Westport

Why use momondo?

Why should I use momondo to find a flight deal from South Korea to Seattle?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from South Korea to Seattle. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from South Korea to Seattle with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Seattle from South Korea with this policy.

How can momondo help me find flights from South Korea to Seattle?

momondo helps you find the best flight between South Korea and Seattle by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from South Korea to Seattle right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Seattle, momondo offers a useful price alert feature which will track prices for flights to Seattle from South Korea and alert you when they change.

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