How long is the flight from Seoul Gimpo Intl Airport to State of Washington?

There are many flights that can get you from Seoul Gimpo Intl Airport to State of Washington in 17h 55m. Fly via ANA or Japan Airlines to get the fastest option. There are 5182 mi between Seoul Gimpo Intl Airport and State of Washington. Both multi-stop and nonstop flights can be found to your destination and back.

In terms of precipitation, rainfall in State of Washington ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit State of Washington when rainfall is around 0.7 in.

If weather is an important factor for your trip to State of Washington, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

What is the cheapest time of day to fly from GMP to WA?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seoul Gimpo Intl Airport to State of Washington as you normally would.

Can I find deals for flights from Gimpo Intl to Washington that include hotel bookings?

Yes. In addition to deals on Gimpo Intl to Washington flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Gimpo Intl to Washington?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Gimpo Intl to Washington.

Can I find deals for business class flights from Gimpo Intl to Washington?

Yes. Cheapflights offers flight deals from Gimpo Intl to Washington by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$482+ Flights from Seoul Gimpo Intl Airport to Washington

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Cheap flight deals from Gimpo Intl to Washington

Cheapest flights from Gimpo Intl to Washington
Explore the most affordable flight options available from Gimpo Intl to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

Thu 12/187:50 pmGMP - SEA

1 stop34h 30mANA

Thu 1/13:45 pmSEA - GMP

1 stop33h 50mANA

Deal found 12/16

$872

Tue 12/167:50 pmGMP - SEA

1 stop34h 30mANA

Mon 1/53:45 pmSEA - GMP

1 stop26h 35mANA

Deal found 12/16

$898

Fri 12/267:45 amGMP - SEA

1 stop22h 35mANA

Mon 12/293:40 pmSEA - GMP

1 stop26h 40mANA

Deal found 12/17

$1,261

Sun 12/217:50 pmGMP - SEA

1 stop34h 30mANA

Sat 12/273:40 pmSEA - GMP

1 stop33h 55mANA

Deal found 12/16

$1,346

Tue 12/237:45 amGMP - SEA

1 stop22h 35mANA

Sun 12/283:40 pmSEA - GMP

1 stop33h 55mANA

Deal found 12/17

$1,401

Thu 12/187:40 pmGMP - SEA

1 stop31h 10mJapan Airlines

Thu 1/17:09 amSEA - GMP

2 stops21h 56mJapan Airlines

Deal found 12/16

$1,426

Fri 12/268:00 amGMP - PDX

2 stops26h 11mMultiple Airlines

Fri 1/27:15 amPDX - GMP

2 stops21h 50mMultiple Airlines

Deal found 12/17

$1,537

Best flights from Gimpo Intl to Washington
Discover carefully curated flight deals from Gimpo Intl to Washington that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.

Thu 1/2212:25 pmGMP - SEA

1 stop17h 55mANA

Tue 4/74:30 pmSEA - GMP

1 stop26h 35mANA

Deal found 12/16

$872

Tue 4/77:55 amGMP - PDX

2 stops24h 33mJapan Airlines

Tue 4/217:00 amPDX - GMP

2 stops22h 50mJapan Airlines

Deal found 12/17

$1,248

Tue 4/77:55 amGMP - PDX

2 stops28h 59mMultiple Airlines

Tue 4/216:46 amPDX - GMP

2 stops23h 04mMultiple Airlines

Deal found 12/16

$1,404

Fri 1/307:45 amGMP - SEA

2 stops28h 31mANA

Fri 2/69:55 amSEA - GMP

2 stops19h 35mANA

Deal found 12/16

$875

Mon 1/267:45 amGMP - SEA

1 stop22h 35mANA

Mon 9/214:30 pmSEA - GMP

1 stop34h 05mANA

Deal found 12/18

$893

Fri 2/137:45 amGMP - SEA

1 stop22h 35mANA

Tue 2/173:45 pmSEA - GMP

1 stop26h 35mANA

Deal found 12/18

$893

Fri 2/67:45 amGMP - SEA

1 stop22h 35mANA

Wed 2/183:45 pmSEA - GMP

1 stop26h 35mANA

Deal found 12/18

$893

Sat 1/317:50 pmGMP - PDX

2 stops39h 40mANA

Sat 2/79:50 amPDX - GMP

2 stops19h 40mANA

Deal found 12/17

$1,142

Fri 2/208:00 amGMP - PDX

2 stops26h 19mJapan Airlines

Tue 2/247:05 amPDX - GMP

2 stops42h 15mJapan Airlines

Deal found 12/17

$1,748

Sat 1/38:40 amGMP - PDX

2 stops23h 14mANA

Fri 1/99:50 amPDX - GMP

2 stops19h 40mANA

Deal found 12/18

$3,120

Tue 2/1712:25 pmGMP - PDX

2 stops23h 05mANA

Sat 2/289:50 amPDX - GMP

2 stops19h 40mANA

Deal found 12/17

$3,601

Last-minute flights from Gimpo Intl to Washington
Discover last-minute flight deals from Gimpo Intl to Washington. Data last updated December 18, 2025 and is based on user searches.

Thu 12/187:50 pmGMP - SEA

1 stop34h 30mANA

Thu 1/13:45 pmSEA - GMP

1 stop33h 50mANA

Deal found 12/16

$872

Fri 12/268:00 amGMP - PDX

2 stops26h 11mMultiple Airlines

Fri 1/27:15 amPDX - GMP

2 stops21h 50mMultiple Airlines

Deal found 12/17

$1,537

Sat 1/38:40 amGMP - PDX

2 stops23h 14mANA

Fri 1/99:50 amPDX - GMP

2 stops19h 40mANA

Deal found 12/18

$3,120

Thu 1/157:50 pmGMP - SEA

1 stop34h 30mANA

Thu 1/229:55 amSEA - GMP

2 stops19h 35mANA

Deal found 12/17

$840

Fri 1/2312:25 pmGMP - SEA

1 stop17h 55mANA

Tue 2/243:45 pmSEA - GMP

1 stop26h 35mANA

Deal found 12/16

$916

Mon 1/267:45 amGMP - SEA

1 stop22h 35mANA

Mon 9/214:30 pmSEA - GMP

1 stop34h 05mANA

Deal found 12/18

$893

Thu 1/2912:25 pmGMP - SEA

1 stop17h 55mANA

Sat 1/313:45 pmSEA - GMP

1 stop33h 50mANA

Deal found 12/18

$932

Fri 1/3012:25 pmGMP - SEA

1 stop17h 55mANA

Fri 2/69:55 amSEA - GMP

2 stops19h 35mANA

Deal found 12/16

$850

Fri 1/307:45 amGMP - PDX

2 stops27h 45mANA

Fri 2/69:50 amPDX - GMP

2 stops19h 40mANA

Deal found 12/15

$1,028

Sat 1/317:45 amGMP - SEA

1 stop22h 35mANA

Sat 2/73:45 pmSEA - GMP

1 stop26h 35mANA

Deal found 12/17

$983

Sat 1/317:50 pmGMP - PDX

2 stops39h 40mANA

Sat 2/79:50 amPDX - GMP

2 stops19h 40mANA

Deal found 12/17

$1,142

One-way flights from Gimpo Intl to Washington
Search for one-way flight options from Gimpo Intl to Washington. Find affordable one-way fares based on user searches. Data last updated December 18, 2025.

Mon 3/98:20 amGMP - SEA

2 stops22h 41mMultiple Airlines

Deal found 12/16

$482

Sun 3/159:30 pmGMP - SEA

3 stops51h 30mMultiple Airlines

Deal found 12/17

$512

Sat 5/231:50 pmGMP - SEA

1 stop21h 40mEVA Air

Deal found 12/17

$556

Fri 2/61:50 pmGMP - SEA

1 stop21h 20mEVA Air

Deal found 12/17

$568

Sat 2/71:50 pmGMP - SEA

1 stop21h 20mEVA Air

Deal found 12/16

$572

Mon 3/308:50 pmGMP - SEA

2 stops28h 10mMultiple Airlines

Deal found 12/17

$586

Mon 1/128:30 pmGMP - SEA

3 stops59h 35mMultiple Airlines

Deal found 12/17

$604

Sat 3/71:50 pmGMP - SEA

1 stop21h 20mEVA Air

Deal found 12/16

$610

Sat 4/48:35 amGMP - SEA

1 stop16h 25mMultiple Airlines

Deal found 12/17

$662

Thu 1/159:00 amGMP - SEA

2 stops21h 20mMultiple Airlines

Deal found 12/17

$666

Thu 4/28:10 amGMP - SEA

2 stops24h 00mMultiple Airlines

Deal found 12/17

$672

Tue 5/267:15 pmGMP - PDX

2 stops34h 21mEVA Air

Deal found 12/17

$697

Find flight deals from Gimpo Intl to Washington

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$840 (FlightHub)
One-way from	$482 (Trip.com)
Popular in	August
Cheapest in	November
Average price	$645

Provider with most accurate pricing for Seoul (SEL)-Seattle/Tacoma Intl flight deals.

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From Seoul Gimpo Intl to Washington

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One-way flight from Seoul Gimpo Intl to Washington

Search Deals

Highest demand for flights based on searches. 8% potential increase in price ($62 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).

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Average for round-trip flights in December 2025

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Cheapflights Fare Finder

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

Thu 1/22

12:25 pm-1:20 pm

1 stop17h 55m

Seattle/Tacoma Intl

Tue 4/7

4:30 pm-11:05 am

1 stop26h 35m

$872

SeoulSeattle

GMP - SEA

GMPSEA

Seoul Gimpo Intl

Fri 1/30

7:45 am-7:16 pm

2 stops28h 31m

Seattle/Tacoma Intl

Fri 2/6

9:55 am-10:30 pm

2 stops19h 35m

$875

SeoulSeattle

GMP - SEA

GMPSEA

Seoul Gimpo Intl

Mon 1/26

7:45 am-1:20 pm

1 stop22h 35m

Seattle/Tacoma Intl

Mon 9/21

4:30 pm-6:35 pm

1 stop34h 05m

$893

SeoulSeattle

GMP - SEA

GMPSEA

Seoul Gimpo Intl

Fri 2/13

7:45 am-1:20 pm

1 stop22h 35m

Seattle/Tacoma Intl

Tue 2/17

3:45 pm-11:20 am

1 stop26h 35m

$893

SeoulSeattle

GMP - SEA

GMPSEA

Seoul Gimpo Intl

Fri 2/6

7:45 am-1:20 pm

1 stop22h 35m

Seattle/Tacoma Intl

Wed 2/18

3:45 pm-11:20 am

1 stop26h 35m

$893

SeoulPortland

GMP - PDX

GMPPDX

Seoul Gimpo Intl

Sat 1/31

7:50 pm-6:30 pm

2 stops39h 40m

Portland

Sat 2/7

9:50 am-10:30 pm

2 stops19h 40m

$1,142

SeoulPortland

GMP - PDX

GMPPDX

Seoul Gimpo Intl

Tue 4/7

7:55 am-4:28 pm

2 stops24h 33m

Portland

Tue 4/21

7:00 am-9:50 pm

2 stops22h 50m

$1,248

SeoulPortland

GMP - PDX

GMPPDX

Seoul Gimpo Intl

Tue 4/7

7:55 am-8:54 pm

2 stops28h 59m

Portland

Tue 4/21

6:46 am-9:50 pm

2 stops23h 04m

$1,404

SeoulPortland

GMP - PDX

GMPPDX

Seoul Gimpo Intl

Fri 2/20

8:00 am-5:19 pm

2 stops26h 19m

Portland

Tue 2/24

7:05 am-6:20 pm

2 stops42h 15m

$1,748

SeoulPortland

GMP - PDX

GMPPDX

Seoul Gimpo Intl

Sat 1/3

8:40 am-2:54 pm

2 stops23h 14m

Portland

Fri 1/9

9:50 am-10:30 pm

2 stops19h 40m

$3,120

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 33 results

Best time to book a flight from Gimpo Intl to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Gimpo Intl with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seoul Gimpo Intl Airport to Washington

No data available for this route at this time. Please check back soon.

Related info for your journey

How long is the flight from Seoul Gimpo Intl Airport to State of Washington?
There are many flights that can get you from Seoul Gimpo Intl Airport to State of Washington in 17h 55m. Fly via ANA or Japan Airlines to get the fastest option. There are 5182 mi between Seoul Gimpo Intl Airport and State of Washington. Both multi-stop and nonstop flights can be found to your destination and back.
Can I find deals for flights from Gimpo Intl to Washington that include hotel bookings?
Yes. In addition to deals on Gimpo Intl to Washington flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Gimpo Intl to Washington?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Gimpo Intl to Washington.
Can I find deals for business class flights from Gimpo Intl to Washington?
Yes. Cheapflights offers flight deals from Gimpo Intl to Washington by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Complete your trip

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$482+ Cheap flights from Gimpo Intl (GMP) to Washington

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/9. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Gimpo Intl to Washington

Cheapest flights from Gimpo Intl to WashingtonExplore the most affordable flight options available from Gimpo Intl to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

Explore the most affordable flight options available from Gimpo Intl to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

Find flight deals from Gimpo Intl to Washington

Keep the following information in mind while searching for Gimpo Intl to Washington flight deals. Data was last updated December 18, 2025.

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Round-trip from

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Popular in

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Use the filters below to find and compare flights from Seoul Gimpo Intl Airport to Washington that are best for you.

Best time to book a flight from Gimpo Intl to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Gimpo Intl with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Seoul Gimpo Intl Airport to Washington

Related info for your journey

Find useful and relevant information for your journey from Gimpo Intl to Washington. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How long is the flight from Seoul Gimpo Intl Airport to State of Washington?

Can I find deals for flights from Gimpo Intl to Washington that include hotel bookings?

How can I find direct flights from Gimpo Intl to Washington?

Can I find deals for business class flights from Gimpo Intl to Washington?

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Cheapest flights from Gimpo Intl to Washington
Explore the most affordable flight options available from Gimpo Intl to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.