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Cheap flights from Washington, D.C. to Seoul from $426

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, D.C. to Seoul departing on 3/17. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:40 pm - 7:50 pm
IAD
-
GMP
34h 10m
3 stops
Multiple Airlines Logo
8:50 pm - 7:30 pm
GMP
-
IAD
35h 40m
3 stops
$1,097Multiple Airlines
mar., mar. 10 - mar., mar. 17
Air China Logo
11:00 pm - 1:05 pm
IAD
-
GMP
25h 05m
1 stop
Air China Logo
8:40 am - 7:30 pm
GMP
-
IAD
23h 50m
1 stop
$1,264Air China
mar., mar. 10 - mar., mar. 17
Air China Logo
11:00 pm - 1:05 pm
IAD
-
GMP
25h 05m
1 stop
Air China Logo
3:00 pm - 7:30 pm
GMP
-
IAD
41h 30m
1 stop
$1,265Air China
vie., abr. 10 - lun., abr. 20
Japan Airlines Logo
6:52 am - 10:05 pm
BWI
-
GMP
50h 13m
2 stops
Japan Airlines Logo
7:40 pm - 10:00 pm
GMP
-
BWI
39h 20m
2 stops
$1,280Japan Airlines
lun., mar. 9 - dom., mar. 15
Air China Logo
11:00 pm - 1:05 pm
IAD
-
GMP
25h 05m
1 stop
Air China Logo
3:00 pm - 7:30 pm
GMP
-
IAD
41h 30m
1 stop
$1,307Air China
vie., abr. 24 - lun., may. 4
Air China Logo
11:00 pm - 1:05 pm
IAD
-
GMP
25h 05m
1 stop
Air China Logo
8:40 am - 7:30 pm
GMP
-
IAD
23h 50m
1 stop
$1,343Air China
mar., mar. 17 - mar., mar. 24
Air China Logo
11:00 pm - 1:05 pm
IAD
-
GMP
25h 05m
1 stop
Air China Logo
8:40 am - 7:30 pm
GMP
-
IAD
23h 50m
1 stop
$1,345Air China
mar., mar. 10 - mar., mar. 17
Japan Airlines Logo
7:55 pm - 9:15 pm
BWI
-
GMP
36h 20m
2 stops
Japan Airlines Logo
8:00 am - 5:56 pm
GMP
-
BWI
22h 56m
2 stops
$1,406Japan Airlines
jue., abr. 16 - mié., abr. 22
ANA Logo
3:30 pm - 11:05 am
DCA
-
GMP
30h 35m
2 stops
ANA Logo
7:55 pm - 1:59 pm
GMP
-
DCA
31h 04m
2 stops
$1,519ANA
mar., abr. 7 - mar., jul. 7
ANA Logo
1:00 pm - 11:05 am
DCA
-
GMP
33h 05m
2 stops
ANA Logo
7:55 pm - 3:38 pm
GMP
-
DCA
32h 43m
2 stops
$1,564ANA
sáb., abr. 11 - dom., abr. 19

ANA flights from Washington, D.C. to Seoul Gimpo Intl Airport

Our best ANA deals on Washington, D.C. to Seoul Gimpo Intl Airport flight tickets
ANA
Apr 7
IAD12:15 pmWashington, D.C. Dulles Intl
21h 05m
1 stop
GMP10:20 pmSeoul Gimpo Intl
Apr 22
GMP7:55 pmSeoul Gimpo Intl
27h 10m
1 stop
IAD10:05 amWashington, D.C. Dulles Intl
$1,506
ANA
Apr 7
IAD1:10 pmWashington, D.C. Dulles Intl
32h 55m
2 stops
GMP11:05 amSeoul Gimpo Intl
Apr 21
GMP7:55 pmSeoul Gimpo Intl
27h 10m
1 stop
IAD10:05 amWashington, D.C. Dulles Intl
$1,510
ANA
Apr 8
IAD12:15 pmWashington, D.C. Dulles Intl
21h 05m
1 stop
GMP10:20 pmSeoul Gimpo Intl
Jul 8
GMP7:55 pmSeoul Gimpo Intl
31h 08m
2 stops
IAD2:03 pmWashington, D.C. Dulles Intl
$1,515

Air China flights from Washington, D.C. to Seoul Gimpo Intl Airport

Our best Air China deals on Washington, D.C. to Seoul Gimpo Intl Airport flight tickets
Air China
Mar 10
IAD11:00 pmWashington, D.C. Dulles Intl
25h 05m
1 stop
GMP1:05 pmSeoul Gimpo Intl
Mar 17
GMP8:40 amSeoul Gimpo Intl
23h 50m
1 stop
IAD7:30 pmWashington, D.C. Dulles Intl
$1,264
Air China
Apr 10
IAD11:00 pmWashington, D.C. Dulles Intl
25h 05m
1 stop
GMP1:05 pmSeoul Gimpo Intl
Apr 20
GMP3:00 pmSeoul Gimpo Intl
41h 30m
1 stop
IAD7:30 pmWashington, D.C. Dulles Intl
$1,265
Air China
Apr 24
IAD11:00 pmWashington, D.C. Dulles Intl
25h 05m
1 stop
GMP1:05 pmSeoul Gimpo Intl
May 4
GMP3:00 pmSeoul Gimpo Intl
41h 30m
1 stop
IAD7:30 pmWashington, D.C. Dulles Intl
$1,307

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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 febrero 2, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Seoul Gimpo Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

mar. 3/10

8:40 pm-7:50 pm

3 stops34h 10m

Seoul Gimpo Intl

mar. 3/17

8:50 pm-7:30 pm

3 stops35h 40m

$1,097

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

mar. 3/10

11:00 pm-1:05 pm

1 stop25h 05m

Seoul Gimpo Intl

mar. 3/17

8:40 am-7:30 pm

1 stop23h 50m

$1,264

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

vie. 4/10

11:00 pm-1:05 pm

1 stop25h 05m

Seoul Gimpo Intl

lun. 4/20

3:00 pm-7:30 pm

1 stop41h 30m

$1,265

BaltimoreSeoul

BWI - GMP

BWIGMP

Baltimore/Washington

lun. 3/9

6:52 am-10:05 pm

2 stops50h 13m

Seoul Gimpo Intl

dom. 3/15

7:40 pm-10:00 pm

2 stops39h 20m

$1,280

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

vie. 4/24

11:00 pm-1:05 pm

1 stop25h 05m

Seoul Gimpo Intl

lun. 5/4

3:00 pm-7:30 pm

1 stop41h 30m

$1,307

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

mar. 3/17

11:00 pm-1:05 pm

1 stop25h 05m

Seoul Gimpo Intl

mar. 3/24

8:40 am-7:30 pm

1 stop23h 50m

$1,343

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

mar. 3/10

11:00 pm-1:05 pm

1 stop25h 05m

Seoul Gimpo Intl

mar. 3/17

8:40 am-7:30 pm

1 stop23h 50m

$1,345

BaltimoreSeoul

BWI - GMP

BWIGMP

Baltimore/Washington

jue. 4/16

7:55 pm-9:15 pm

2 stops36h 20m

Seoul Gimpo Intl

mié. 4/22

8:00 am-5:56 pm

2 stops22h 56m

$1,406

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

mar. 4/7

3:30 pm-11:05 am

2 stops30h 35m

Seoul Gimpo Intl

mar. 7/7

7:55 pm-1:59 pm

2 stops31h 04m

$1,519

Washington, D.C.Seoul

DCA - GMP

DCAGMP

Washington, D.C. Reagan-National

sáb. 4/11

1:00 pm-11:05 am

2 stops33h 05m

Seoul Gimpo Intl

dom. 4/19

7:55 pm-3:38 pm

2 stops32h 43m

$1,564

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 Seoul from

How to get the cheapest flight ticket from Washington, D.C. 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, D.C. to Seoul Gimpo Intl?

Air China and Japan Airlines are the most popular carriers operating from Washington, D.C. to Seoul Gimpo Intl

When to book flights from Washington, D.C. to Seoul Gimpo Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to Seoul Gimpo Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. to Seoul Gimpo Intl Airport (WAS to GMP) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Seoul Gimpo Intl Airport

Fastest flight time

20h 28m

Direct flights

None
The fastest flight from Washington, D.C. to Seoul Gimpo Intl Airport takes 20h 28m
There are no direct flights from Washington, D.C. to Seoul Gimpo Intl Airport. There are no popular flight routes from Washington, D.C. to Seoul Gimpo Intl Airport.
Search flight deals

  • How far is Washington, D.C. to Seoul Gimpo Intl by plane?

    Seoul Gimpo Intl is 6935.3 mi away from Washington, D.C.. Typically, this will take 20h 28m by plane in normal conditions.

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

    Prices for flights from Washington, D.C. to Seoul Gimpo Intl Airport refresh daily.

  • How old do you have to be to fly from Washington, D.C. to Seoul Gimpo 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 Washington, D.C. to Seoul Gimpo Intl Airport.

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

    The required travel and health documents for your Seoul Gimpo 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 Seoul Gimpo Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Seoul?

It is quick and easy to find Washington, D.C. to Seoul flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Seoul that suits you.

Can I find flights from Washington, D.C. to Seoul with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Seoul from Washington, D.C. with this policy.

How can momondo help me find flights from Washington, D.C. to Seoul?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington, D.C. to Seoul.

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

If you are not ready to book a flight from Washington, D.C. 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.

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