Latest deals
Insights
FAQs
Price Alerts

Cheap flights from Washington to Seoul from $491

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Seoul departing on 5/12. 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

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Washington to Seoul

Cheap round-trip flights

Enter your travel dates to find the best prices.
EVA Air Logo
2:10 am - 7:15 pm
SEA
-
GMP
25h 05m
1 stop
EVA Air Logo
1:50 pm - 7:00 pm
GMP
-
SEA
21h 10m
1 stop
$956EVA Air
Mon, Aug 31 - Sat, Sep 26
China Eastern Logo
7:00 am - 11:00 am
SEA
-
GMP
36h 00m
2 stops
China Eastern Logo
8:50 pm - 4:53 pm
GMP
-
SEA
36h 03m
2 stops
$996China Eastern
Mon, Apr 27 - Thu, May 14
EVA Air Logo
2:10 am - 6:10 pm
SEA
-
GMP
24h 00m
1 stop
EVA Air Logo
1:50 pm - 7:40 pm
GMP
-
SEA
21h 50m
1 stop
$1,003EVA Air
Sun, Aug 30 - Sat, Sep 19
EVA Air Logo
1:30 am - 12:50 pm
SEA
-
GMP
19h 20m
1 stop
EVA Air Logo
1:50 pm - 7:00 pm
GMP
-
SEA
21h 10m
1 stop
$1,043EVA Air
Thu, Sep 3 - Sat, Sep 19
Japan Airlines Logo
1:15 pm - 10:40 am
SEA
-
GMP
29h 25m
1 stop
Japan Airlines Logo
8:00 am - 10:35 am
GMP
-
SEA
18h 35m
1 stop
$1,072Japan Airlines
Mon, Apr 27 - Mon, May 11
EVA Air Logo
1:30 am - 12:50 pm
SEA
-
GMP
19h 20m
1 stop
EVA Air Logo
1:50 pm - 7:20 pm
GMP
-
SEA
21h 30m
1 stop
$1,075EVA Air
Thu, Sep 17 - Fri, Oct 16
EVA Air Logo
1:30 am - 12:50 pm
SEA
-
GMP
19h 20m
1 stop
EVA Air Logo
1:50 pm - 7:20 pm
GMP
-
SEA
21h 30m
1 stop
$1,082EVA Air
Wed, Sep 9 - Fri, Oct 2
Japan Airlines Logo
1:15 pm - 10:40 am
SEA
-
GMP
29h 25m
1 stop
Japan Airlines Logo
12:05 pm - 4:17 pm
GMP
-
SEA
20h 12m
2 stops
$1,085Japan Airlines
Mon, Apr 27 - Mon, May 11
Multiple Airlines Logo
2:50 pm - 12:50 pm
PDX
-
GMP
30h 00m
2 stops
Multiple Airlines Logo
1:50 pm - 11:36 pm
GMP
-
PDX
25h 46m
2 stops
$1,197Multiple Airlines
Thu, May 7 - Fri, Jun 5
Multiple Airlines Logo
2:50 pm - 12:50 pm
PDX
-
GMP
30h 00m
2 stops
Multiple Airlines Logo
1:50 pm - 11:36 pm
GMP
-
PDX
25h 46m
2 stops
$1,292Multiple Airlines
Thu, May 7 - Fri, Jun 5

Japan Airlines flights from State of Washington to Seoul Gimpo Intl Airport

Our best Japan Airlines deals on State of Washington to Seoul Gimpo Intl Airport flight tickets
Japan Airlines
Apr 27
SEA1:15 pmSeattle/Tacoma Intl
29h 25m
1 stop
GMP10:40 amSeoul Gimpo Intl
May 11
GMP8:00 amSeoul Gimpo Intl
18h 35m
1 stop
SEA10:35 amSeattle/Tacoma Intl
$1,072
Japan Airlines
Apr 27
SEA1:15 pmSeattle/Tacoma Intl
29h 25m
1 stop
GMP10:40 amSeoul Gimpo Intl
May 11
GMP12:05 pmSeoul Gimpo Intl
20h 12m
2 stops
SEA4:17 pmSeattle/Tacoma Intl
$1,085
Japan Airlines
Apr 26
SEA3:53 pmSeattle/Tacoma Intl
50h 47m
2 stops
GMP10:40 amSeoul Gimpo Intl
May 12
GMP7:15 pmSeoul Gimpo Intl
31h 20m
1 stop
SEA10:35 amSeattle/Tacoma Intl
$1,099

ANA flights from State of Washington to Seoul Gimpo Intl Airport

Our best ANA deals on State of Washington to Seoul Gimpo Intl Airport flight tickets
ANA
Apr 6
SEA4:30 pmSeattle/Tacoma Intl
26h 35m
1 stop
GMP11:05 amSeoul Gimpo Intl
Apr 27
GMP7:40 amSeoul Gimpo Intl
22h 45m
1 stop
SEA2:25 pmSeattle/Tacoma Intl
$1,585
ANA
Apr 6
SEA4:30 pmSeattle/Tacoma Intl
26h 35m
1 stop
GMP11:05 amSeoul Gimpo Intl
May 8
GMP12:40 pmSeoul Gimpo Intl
21h 50m
2 stops
SEA6:30 pmSeattle/Tacoma Intl
$1,588
ANA
Apr 6
SEA4:30 pmSeattle/Tacoma Intl
26h 35m
1 stop
GMP11:05 amSeoul Gimpo Intl
May 8
GMP12:40 pmSeoul Gimpo Intl
17h 45m
1 stop
SEA2:25 pmSeattle/Tacoma Intl
$1,596

momondo Fare Finder

 
Customize your flight search to find flights from State of Washington to Seoul Gimpo Intl Airport 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 March 25, 2026.
Use the filters below to find and compare flights from Washington to Seoul Gimpo Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Mon 8/31

2:10 am-7:15 pm

1 stop25h 05m

Seoul Gimpo Intl

Sat 9/26

1:50 pm-7:00 pm

1 stop21h 10m

$956

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Mon 4/27

7:00 am-11:00 am

2 stops36h 00m

Seoul Gimpo Intl

Thu 5/14

8:50 pm-4:53 pm

2 stops36h 03m

$996

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Sun 8/30

2:10 am-6:10 pm

1 stop24h 00m

Seoul Gimpo Intl

Sat 9/19

1:50 pm-7:40 pm

1 stop21h 50m

$1,003
Quickest round-trip

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Thu 9/3

1:30 am-12:50 pm

1 stop19h 20m

Seoul Gimpo Intl

Sat 9/19

1:50 pm-7:00 pm

1 stop21h 10m

$1,043

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Mon 4/27

1:15 pm-10:40 am

1 stop29h 25m

Seoul Gimpo Intl

Mon 5/11

8:00 am-10:35 am

1 stop18h 35m

$1,072

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Thu 9/17

1:30 am-12:50 pm

1 stop19h 20m

Seoul Gimpo Intl

Fri 10/16

1:50 pm-7:20 pm

1 stop21h 30m

$1,075

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Wed 9/9

1:30 am-12:50 pm

1 stop19h 20m

Seoul Gimpo Intl

Fri 10/2

1:50 pm-7:20 pm

1 stop21h 30m

$1,082

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Mon 4/27

1:15 pm-10:40 am

1 stop29h 25m

Seoul Gimpo Intl

Mon 5/11

12:05 pm-4:17 pm

2 stops20h 12m

$1,085

PortlandSeoul

PDX - GMP

PDXGMP

Portland

Thu 5/7

2:50 pm-12:50 pm

2 stops30h 00m

Seoul Gimpo Intl

Fri 6/5

1:50 pm-11:36 pm

2 stops25h 46m

$1,197

PortlandSeoul

PDX - GMP

PDXGMP

Portland

Thu 5/7

2:50 pm-12:50 pm

2 stops30h 00m

Seoul Gimpo Intl

Fri 6/5

1:50 pm-11:36 pm

2 stops25h 46m

$1,292

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Seoul from

How to get the cheapest flight ticket from State of Washington to Seoul Gimpo Intl Airport

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 airline that flies from Washington to Seoul Gimpo Intl?

EVA Air and China Eastern are the most popular carriers operating from Washington to Seoul Gimpo Intl

Cheap State of Washington to Seoul Gimpo Intl Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Seoul Gimpo Intl Airport

Fastest flight time

19h 55m

Direct flights

None
The fastest flight from State of Washington to Seoul Gimpo Intl Airport takes 19h 55m
There are no direct flights from State of Washington to Seoul Gimpo Intl Airport. There are no popular flight routes from State of Washington to Seoul Gimpo Intl Airport.
Search flight deals

  • When did momondo last update prices for flights from Washington to Seoul Gimpo Intl Airport?

    Prices for flights from Washington to Seoul Gimpo Intl Airport were last updated today.

  • How old do you have to be to fly from Washington to Seoul Gimpo Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington to Seoul Gimpo Intl Airport.

  • What documentation or ID do you need to fly to Seoul Gimpo Intl Airport?

    The necessary travel and health documents for your Seoul Gimpo Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington to Seoul for you.

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

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

How can momondo help me find flights from Washington to Seoul?

Once you have performed a search for Washington to Seoul flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are not ready to book a flight from Washington to Seoul now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Seoul and let you know when they change.

An easier way to manage your Seoul Gimpo Intl Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 4/24
Fri 5/1
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Seoul

Popular cities in South Korea

Popular flights according to clicks in the last 7 days on momondo
Flights to Incheon Intl Airportfrom $626