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Cheap flights from South Korea to Washington from $283

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 Washington departing on 2/5. 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 South Korea to Washington

Recent round-trip flight deals from South Korea to Washington

Enter your travel dates to find the best prices.
Air Canada Logo
5:55 pm - 2:31 pm
ICN
-
SEA
13h 36m1 stop
Air Canada Logo
10:05 am - 5:10 pm
SEA
-
ICN
14h 05m1 stop
$502Air Canada
Wed, Feb 25 - Wed, Mar 4
Air Canada Logo
6:55 pm - 9:15 am
ICN
-
SEA
31h 20m1 stop
Air Canada Logo
8:00 pm - 5:10 pm
SEA
-
ICN
28h 10m1 stop
$503Air Canada
Mon, Feb 23 - Mon, Mar 2
American Airlines Logo
7:15 pm - 6:58 pm
ICN
-
SEA
40h 43m2 stops
American Airlines Logo
5:00 pm - 3:55 pm
SEA
-
ICN
29h 55m1 stop
$530American Airlines
Tue, Feb 24 - Fri, Mar 6
Multiple Airlines Logo
9:10 am - 3:01 pm
ICN
-
SEA
22h 51m2 stops
Multiple Airlines Logo
10:10 am - 4:05 pm
SEA
-
ICN
13h 55m1 stop
$532Multiple Airlines
Mon, Mar 2 - Tue, Apr 7
American Airlines Logo
7:15 pm - 10:00 am
ICN
-
SEA
31h 45m2 stops
American Airlines Logo
6:09 am - 4:45 pm
SEA
-
ICN
41h 36m2 stops
$538American Airlines
Mon, Feb 9 - Sun, Feb 15
Delta Logo
7:00 pm - 4:56 pm
ICN
-
PDX
13h 56m1 stop
Delta Logo
10:45 am - 4:50 pm
PDX
-
ICN
14h 05m1 stop
$639Delta
Tue, Apr 7 - Tue, Apr 21
Delta Logo
7:00 pm - 10:02 am
ICN
-
PDX
31h 02m1 stop
Delta Logo
5:59 pm - 4:50 pm
PDX
-
ICN
30h 51m1 stop
$640Delta
Tue, Apr 7 - Tue, Apr 21
Korean Air Logo
8:05 pm - 12:35 pm
ICN
-
GEG
33h 30m1 stop
Korean Air Logo
7:27 am - 4:30 pm
GEG
-
ICN
16h 03m1 stop
$708Korean Air
Fri, Feb 27 - Tue, Mar 3
Korean Air Logo
4:30 pm - 10:40 am
PUS
-
SEA
34h 10m1 stop
Korean Air Logo
12:50 pm - 8:45 pm
SEA
-
PUS
15h 55m1 stop
$824Korean Air
Tue, Apr 7 - Tue, Apr 14
Asiana Airlines Logo
4:00 pm - 1:55 pm
PUS
-
SEA
14h 55m1 stop
Asiana Airlines Logo
12:10 am - 1:35 pm
SEA
-
PUS
20h 25m1 stop
$874Asiana Airlines
Fri, Feb 20 - Wed, Feb 25

American Airlines flights from South Korea to State of Washington

Our best American Airlines deals on South Korea to State of Washington flight tickets
American Airlines
Feb 24
ICN7:15 pmIncheon Intl
40h 43m
2 stops
SEA6:58 pmSeattle/Tacoma Intl
Mar 4
SEA12:59 amSeattle/Tacoma Intl
22h 46m
1 stop
ICN4:45 pmIncheon Intl
$530
American Airlines
Feb 9
ICN7:15 pmIncheon Intl
31h 45m
2 stops
SEA10:00 amSeattle/Tacoma Intl
Feb 15
SEA6:09 amSeattle/Tacoma Intl
41h 36m
2 stops
ICN4:45 pmIncheon Intl
$538
American Airlines
Feb 10
ICN7:15 pmIncheon Intl
40h 50m
2 stops
SEA7:05 pmSeattle/Tacoma Intl
Feb 17
SEA5:37 amSeattle/Tacoma Intl
42h 08m
1 stop
ICN4:45 pmIncheon Intl
$543

Asiana Airlines flights from South Korea to State of Washington

Our best Asiana Airlines deals on South Korea to State of Washington flight tickets
Asiana Airlines
Feb 10
ICN6:55 pmIncheon Intl
21h 02m
1 stop
SEA10:57 pmSeattle/Tacoma Intl
Feb 23
SEA5:45 amSeattle/Tacoma Intl
18h 25m
1 stop
ICN5:10 pmIncheon Intl
$562
Asiana Airlines
Feb 12
ICN12:45 pmIncheon Intl
15h 33m
1 stop
SEA11:18 amSeattle/Tacoma Intl
Feb 23
SEA6:04 pmSeattle/Tacoma Intl
29h 11m
2 stops
ICN4:15 pmIncheon Intl
$637
Asiana Airlines
Feb 12
ICN12:45 pmIncheon Intl
15h 33m
1 stop
SEA11:18 amSeattle/Tacoma Intl
Feb 23
SEA12:32 pmSeattle/Tacoma Intl
34h 43m
1 stop
ICN4:15 pmIncheon Intl
$646

momondo Fare Finder

 
Customize your flight search to find flights from South Korea to State of Washington 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 January 11, 2026.
Use the filters below to find and compare flights from South Korea to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Wed 2/25

5:55 pm-2:31 pm

1 stop13h 36m

Seattle/Tacoma Intl

Wed 3/4

10:05 am-5:10 pm

1 stop14h 05m

$502

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 2/23

6:55 pm-9:15 am

1 stop31h 20m

Seattle/Tacoma Intl

Mon 3/2

8:00 pm-5:10 pm

1 stop28h 10m

$503

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Tue 2/24

7:15 pm-6:58 pm

2 stops40h 43m

Seattle/Tacoma Intl

Fri 3/6

5:00 pm-3:55 pm

1 stop29h 55m

$530

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 3/2

9:10 am-3:01 pm

2 stops22h 51m

Seattle/Tacoma Intl

Tue 4/7

10:10 am-4:05 pm

1 stop13h 55m

$532

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 2/9

7:15 pm-10:00 am

2 stops31h 45m

Seattle/Tacoma Intl

Sun 2/15

6:09 am-4:45 pm

2 stops41h 36m

$538

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Tue 4/7

7:00 pm-4:56 pm

1 stop13h 56m

Portland

Tue 4/21

10:45 am-4:50 pm

1 stop14h 05m

$639

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Tue 4/7

7:00 pm-10:02 am

1 stop31h 02m

Portland

Tue 4/21

5:59 pm-4:50 pm

1 stop30h 51m

$640

IncheonSpokane

ICN - GEG

ICNGEG

Incheon Intl

Fri 2/27

8:05 pm-12:35 pm

1 stop33h 30m

Spokane

Tue 3/3

7:27 am-4:30 pm

1 stop16h 03m

$708

BusanSeattle

PUS - SEA

PUSSEA

Busan Gimhae

Tue 4/7

4:30 pm-10:40 am

1 stop34h 10m

Seattle/Tacoma Intl

Tue 4/14

12:50 pm-8:45 pm

1 stop15h 55m

$824

BusanSeattle

PUS - SEA

PUSSEA

Busan Gimhae

Fri 2/20

4:00 pm-1:55 pm

1 stop14h 55m

Seattle/Tacoma Intl

Wed 2/25

12:10 am-1:35 pm

1 stop20h 25m

$874

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 Washington from

How to get the cheapest flight ticket from South Korea to State of Washington

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 State of Washington?

The month of November is, on average, the cheapest month to fly to State of Washington from South Korea, with most prices found around $556. If you aren’t able to travel to State of Washington during the month of November, then flying in December is also cheap. Prices for this month can be found on momondo for an average of $568.

What is the cheapest day to depart on your flight to State of Washington?

The cheapest day to depart from South Korea to State of Washington is on a Thursday. Travelers who choose to depart for State of Washington on a Thursday will often find tickets for as low as $718. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from South Korea to State of Washington for around $904.

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

The cheapest time of day to fly to State of Washington is in the evening when flights can be purchased for as low as $754. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $755 on average. Flights to State of Washington from South Korea in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest South Korea to Washington flight route?

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

How far in advance should I book a flight to State of Washington?

You are more likely to see cheaper flights to State of Washington from South Korea when booking weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around $699 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to State of Washington from South Korea for as low as $541 on momondo.

What cabin class options are available on South Korea to Washington flights?

There are 4 cabin classes available to choose from on South Korea to Washington 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 State of Washington flights?

You could potentially save up to 23% on your flight if you consider stops on a South Korea to State of Washington flight.

Cheap South Korea to State of Washington flight deals and tips

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

Best Price Found

$579

Fastest flight time

9h 50m

Direct flights

Every day

Airports in State of Washington

96 airports
The best one-way flight to State of Washington from South Korea in the past 72 hours is $579. The best round-trip flight deal from South Korea to State of Washington found on momondo in the last 72 hours is $669.
The fastest flight from South Korea to State of Washington takes 9h 50m
Direct flights go from South Korea to State of Washington every day.
There are 96 airports in State of Washington. From South Korea there are direct flights to Seattle/Tacoma Intl (SEA).
Search flight deals

  • When did momondo last update prices for flights from South Korea to Washington?

    Prices for flights from South Korea to Washington are refreshed on a daily basis.

  • How many operators does momondo search for flights from South Korea to Washington?

  • How old do you have to be to fly from South Korea to Washington?

    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 South Korea to Washington.

  • What documentation or ID do you need to fly to Washington?

    The required travel and health documents for your Washington 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 Washington. 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 State of Washington?

Best airlines flying from South Korea to State of Washington

Compare and see reviews for airlines that fly from South Korea to State of Washington with momondo
Airline
Rating
Free Cancellation
Price
Hawaiian AirlinesPriceFrom $352Free CancellationRating
7.8
2,827 reviews
Search Hawaiian Airlines flights
Asiana AirlinesPriceFrom $466Free CancellationRating
8.2
500 reviews
Search Asiana Airlines flights
Korean AirPriceFrom $470Free CancellationRating
8.4
1,187 reviews
Search Korean Air flights
Air CanadaPriceFrom $472Free CancellationRating
7.1
10,616 reviews
Search Air Canada flights
Alaska AirlinesPriceFrom $476Free CancellationRating
8.0
11,688 reviews
Search Alaska Airlines flights
DeltaPriceFrom $606Free CancellationRating
7.9
8,034 reviews
Search Delta flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Washington from South Korea.

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

momondo does allow users to show only those flights to Washington from South Korea which offer a flexible booking policy as well as other useful filters and features.

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

momondo provides multiple filters to help you find the best flight to Washington from South Korea. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes momondo offers price alerts on flights to Washington from South Korea. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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