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Cheap flights from Seoul Gimpo Intl Airport to Washington from $489

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seoul Gimpo Intl Airport to Washington departing on 9/28. 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 Seoul Gimpo Intl Airport to Washington

Cheap round-trip flights

ANA Logo
7:40 am - 2:25 pmGMP-SEA
22h 45m1 stop
ANA Logo
10:05 am - 10:30 pmSEA-GMP
19h 25m2 stops
$843ANA
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Mon, Oct 13 - Mon, Nov 17
ANA Logo
7:45 am - 2:20 pmGMP-SEA
22h 35m1 stop
ANA Logo
10:05 am - 10:30 pmSEA-GMP
19h 25m2 stops
$845ANA
Find Deal
Mon, Oct 27 - Mon, Nov 24
ANA Logo
12:25 pm - 7:16 pmGMP-SEA
23h 51m2 stops
ANA Logo
3:45 pm - 11:20 amSEA-GMP
26h 35m1 stop
$846ANA
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Thu, Dec 18 - Fri, Jan 16
ANA Logo
12:25 pm - 7:16 pmGMP-SEA
23h 51m2 stops
ANA Logo
3:45 pm - 6:35 pmSEA-GMP
33h 50m1 stop
$847ANA
Find Deal
Tue, Feb 3 - Wed, Feb 11
ANA Logo
7:45 am - 1:20 pmGMP-SEA
22h 35m1 stop
ANA Logo
10:05 am - 11:20 amSEA-GMP
32h 15m2 stops
$848ANA
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Mon, Nov 10 - Fri, Nov 28
ANA Logo
7:45 am - 1:20 pmGMP-SEA
22h 35m1 stop
ANA Logo
10:05 am - 10:30 pmSEA-GMP
19h 25m2 stops
$849ANA
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Wed, Nov 12 - Mon, Nov 17
Japan Airlines Logo
12:05 pm - 2:44 pmGMP-PDX
18h 39m2 stops
Japan Airlines Logo
10:36 am - 9:50 pmPDX-GMP
19h 14m2 stops
$1,278Japan Airlines
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Mon, Sep 22 - Mon, Sep 29
Japan Airlines Logo
12:05 pm - 4:50 pmGMP-PDX
20h 45m2 stops
Japan Airlines Logo
9:34 am - 10:05 pmPDX-GMP
19h 31m2 stops
$1,279Japan Airlines
Find Deal
Fri, Oct 31 - Sat, Nov 8
Japan Airlines Logo
12:05 pm - 1:50 pmGMP-PDX
17h 45m2 stops
Japan Airlines Logo
10:30 am - 10:05 pmPDX-GMP
19h 35m2 stops
$1,284Japan Airlines
Find Deal
Mon, Oct 27 - Fri, Oct 31
Logo
12:05 pm - 2:44 pmGMP-PDX
18h 39m2 stops
Logo
1:16 pm - 10:45 amPDX-GMP
29h 29m2 stops
$1,332
Find Deal
Mon, Sep 29 - Mon, Oct 6

ANA flights from Seoul Gimpo Intl Airport to State of Washington

Our best ANA deals on Seoul Gimpo Intl Airport to State of Washington flight tickets
ANA
Oct 13
GMP7:40 amSeoul Gimpo Intl
22h 45m
1 stop
SEA2:25 pmSeattle/Tacoma Intl
Nov 17
SEA10:05 amSeattle/Tacoma Intl
19h 25m
2 stops
GMP10:30 pmSeoul Gimpo Intl
$843
Find similar
ANA
Oct 27
GMP7:45 amSeoul Gimpo Intl
22h 35m
1 stop
SEA2:20 pmSeattle/Tacoma Intl
Nov 24
SEA10:05 amSeattle/Tacoma Intl
19h 25m
2 stops
GMP10:30 pmSeoul Gimpo Intl
$845
Find similar
ANA
Dec 18
GMP12:25 pmSeoul Gimpo Intl
23h 51m
2 stops
SEA7:16 pmSeattle/Tacoma Intl
Jan 16
SEA3:45 pmSeattle/Tacoma Intl
26h 35m
1 stop
GMP11:20 amSeoul Gimpo Intl
$846
Find similar

EVA Air flights from Seoul Gimpo Intl Airport to State of Washington

Our best EVA Air deals on Seoul Gimpo Intl Airport to State of Washington flight tickets
EVA Air
Sep 13
GMP1:50 pmSeoul Gimpo Intl
21h 00m
1 stop
SEA6:50 pmSeattle/Tacoma Intl
Sep 25
SEA1:30 amSeattle/Tacoma Intl
19h 20m
1 stop
GMP12:50 pmSeoul Gimpo Intl
$925
Find similar
EVA Air
Sep 12
GMP1:50 pmSeoul Gimpo Intl
21h 40m
1 stop
SEA7:30 pmSeattle/Tacoma Intl
Sep 18
SEA1:30 amSeattle/Tacoma Intl
19h 20m
1 stop
GMP12:50 pmSeoul Gimpo Intl
$942
Find similar
EVA Air
Sep 6
GMP1:50 pmSeoul Gimpo Intl
21h 00m
1 stop
SEA6:50 pmSeattle/Tacoma Intl
Sep 14
SEA1:30 amSeattle/Tacoma Intl
24h 40m
1 stop
GMP6:10 pmSeoul Gimpo Intl
$1,206
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seoul Gimpo Intl Airport 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 September 1, 2025.
Use the filters below to find and compare flights from Seoul Gimpo Intl Airport to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeoulSeattle

GMP - SEA

GMPSEA

Seoul Gimpo Intl

Mon 10/13

7:40 am-2:25 pm

1 stop22h 45m

Seattle/Tacoma Intl

Mon 11/17

10:05 am-10:30 pm

2 stops19h 25m

$843

SeoulSeattle

GMP - SEA

GMPSEA

Seoul Gimpo Intl

Mon 10/27

7:45 am-2:20 pm

1 stop22h 35m

Seattle/Tacoma Intl

Mon 11/24

10:05 am-10:30 pm

2 stops19h 25m

$845

SeoulSeattle

GMP - SEA

GMPSEA

Seoul Gimpo Intl

Thu 12/18

12:25 pm-7:16 pm

2 stops23h 51m

Seattle/Tacoma Intl

Fri 1/16

3:45 pm-11:20 am

1 stop26h 35m

$846

SeoulSeattle

GMP - SEA

GMPSEA

Seoul Gimpo Intl

Tue 2/3

12:25 pm-7:16 pm

2 stops23h 51m

Seattle/Tacoma Intl

Wed 2/11

3:45 pm-6:35 pm

1 stop33h 50m

$847

SeoulSeattle

GMP - SEA

GMPSEA

Seoul Gimpo Intl

Mon 11/10

7:45 am-1:20 pm

1 stop22h 35m

Seattle/Tacoma Intl

Fri 11/28

10:05 am-11:20 am

2 stops32h 15m

$848

SeoulSeattle

GMP - SEA

GMPSEA

Seoul Gimpo Intl

Wed 11/12

7:45 am-1:20 pm

1 stop22h 35m

Seattle/Tacoma Intl

Mon 11/17

10:05 am-10:30 pm

2 stops19h 25m

$849

SeoulPortland

GMP - PDX

GMPPDX

Seoul Gimpo Intl

Mon 9/22

12:05 pm-2:44 pm

2 stops18h 39m

Portland

Mon 9/29

10:36 am-9:50 pm

2 stops19h 14m

$1,278

SeoulPortland

GMP - PDX

GMPPDX

Seoul Gimpo Intl

Fri 10/31

12:05 pm-4:50 pm

2 stops20h 45m

Portland

Sat 11/8

9:34 am-10:05 pm

2 stops19h 31m

$1,279

SeoulPortland

GMP - PDX

GMPPDX

Seoul Gimpo Intl

Mon 10/27

12:05 pm-1:50 pm

2 stops17h 45m

Portland

Fri 10/31

10:30 am-10:05 pm

2 stops19h 35m

$1,284

SeoulPortland

GMP - PDX

GMPPDX

Seoul Gimpo Intl

Mon 9/29

12:05 pm-2:44 pm

2 stops18h 39m

Portland

Mon 10/6

1:16 pm-10:45 am

2 stops29h 29m

$1,332

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 Seoul Gimpo Intl Airport 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 airline that flies from Seoul Gimpo Intl to Washington?

EVA Air and Japan Airlines are the most popular carriers operating from Seoul Gimpo Intl to Washington

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

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

Direct flights

None
There are no direct flights from Seoul Gimpo Intl Airport to State of Washington. There are no popular flight routes from Seoul Gimpo Intl Airport to State of Washington.
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  • When did momondo last update prices for flights from Seoul Gimpo Intl Airport to Washington?

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

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

    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 Seoul Gimpo Intl Airport to Washington.

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

    The necessary travel and health documents for your Washington 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 Seoul to Washington?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Seoul to Washington. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for Seoul to Washington flights to just show those with flexible booking policies.

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

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

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

Of course. momondo tracks the price of Seoul to Washington 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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