₩636,400 Cheap Flights from St. Louis (STL) to Seoul (GMP)

View ₩636,400 flight on Tue, Aug 19, 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Gimpo Intl. Airport (GMP)

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Cheap Flights from St. Louis to Seoul (STL-GMP)

Prices were available within the past 7 days and start at ₩636,400 for one-way flights and ₩1,232,400 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Japan Airlines
Sun, Sep 14 - Sat, Sep 20
STL
St. Louis
GMP
Seoul
₩1,232,400 Roundtrip, found 2 days ago
₩1,232,400
Roundtrip
found 2 days ago
Select Japan Airlines flight, departing Sun, Sep 14 from St. Louis to Seoul, returning Sat, Sep 20, priced at ₩1,232,400 found 2 days ago
American Airlines
Sun, Sep 14 - Sat, Sep 20
STL
St. Louis
GMP
Seoul
₩1,304,500 Roundtrip, found 2 days ago
₩1,304,500
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sun, Sep 14 from St. Louis to Seoul, returning Sat, Sep 20, priced at ₩1,304,500 found 2 days ago
American Airlines
Sun, Sep 14 - Sat, Sep 20
STL
St. Louis
GMP
Seoul
₩1,332,100 Roundtrip, found 2 days ago
₩1,332,100
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sun, Sep 14 from St. Louis to Seoul, returning Sat, Sep 20, priced at ₩1,332,100 found 2 days ago
Japan Airlines
Sun, Sep 14 - Sat, Sep 20
STL
St. Louis
GMP
Seoul
₩1,362,200 Roundtrip, found 2 days ago
₩1,362,200
Roundtrip
found 2 days ago
Select Japan Airlines flight, departing Sun, Sep 14 from St. Louis to Seoul, returning Sat, Sep 20, priced at ₩1,362,200 found 2 days ago
American Airlines
Sun, Sep 14 - Sat, Sep 20
STL
St. Louis
GMP
Seoul
₩1,369,400 Roundtrip, found 2 days ago
₩1,369,400
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sun, Sep 14 from St. Louis to Seoul, returning Sat, Sep 20, priced at ₩1,369,400 found 2 days ago
American Airlines
Sun, Sep 14 - Sat, Sep 20
STL
St. Louis
GMP
Seoul
₩1,376,600 Roundtrip, found 2 days ago
₩1,376,600
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sun, Sep 14 from St. Louis to Seoul, returning Sat, Sep 20, priced at ₩1,376,600 found 2 days ago
Japan Airlines
Sun, Sep 14 - Sat, Sep 20
STL
St. Louis
GMP
Seoul
₩1,384,300 Roundtrip, found 2 days ago
₩1,384,300
Roundtrip
found 2 days ago
Select Japan Airlines flight, departing Sun, Sep 14 from St. Louis to Seoul, returning Sat, Sep 20, priced at ₩1,384,300 found 2 days ago
American Airlines
Sun, Sep 14 - Sat, Sep 20
STL
St. Louis
GMP
Seoul
₩1,397,000 Roundtrip, found 2 days ago
₩1,397,000
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sun, Sep 14 from St. Louis to Seoul, returning Sat, Sep 20, priced at ₩1,397,000 found 2 days ago
American Airlines
Sun, Sep 14 - Sat, Sep 20
STL
St. Louis
GMP
Seoul
₩1,404,200 Roundtrip, found 2 days ago
₩1,404,200
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sun, Sep 14 from St. Louis to Seoul, returning Sat, Sep 20, priced at ₩1,404,200 found 2 days ago
All Nippon Airways
Sun, Sep 14 - Sat, Sep 20
STL
St. Louis
GMP
Seoul
₩2,802,000 Roundtrip, found 2 days ago
₩2,802,000
Roundtrip
found 2 days ago
Select All Nippon Airways flight, departing Sun, Sep 14 from St. Louis to Seoul, returning Sat, Sep 20, priced at ₩2,802,000 found 2 days ago
Flights from St. Louis (STL) to Seoul (GMP)
Origin airport
Lambert-St. Louis Intl.
Destination airport
Gimpo Intl.
Airlines serving
Japan Airlines
Roundtrip price
₩1,232,400
Distance
10654 km

Frequently asked questions

How much is a flight from Lambert Field to GMP?
Round-trip flights from Lambert-St. Louis Intl. Airport (STL) to Gimpo Intl. Airport (GMP) start from ₩1,232,400. This figure is based on fares quoted within the last 7 days on Expedia for flights departing within the next year — book today so you don't miss out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Lambert-St. Louis Intl. Airport (STL) to Gimpo Airport?
The majority of flights can be conveniently canceled online, but whether you are charged a fee varies between airlines. If you do need to cancel your escape, follow the easy instructions in the Customer Service Portal.
How do I find cheap flights from Lambert Field to Gimpo Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Lambert Field to Gimpo Intl. Airport (GMP) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Lambert-St. Louis Intl. Airport (STL) to GMP?
St. Louis to Seoul is around 10,700 kilometers, so be prepared to spend a while in the air. Don't forget to pack all the essentials, from your headphones to your hoodie. Toss in some snacks to munch on throughout your flight too.
Which airlines fly direct from STL to GMP?
At present, no airlines offer flights directly from Lambert Field to Gimpo Airport. You'll have to book a flight with one or more stops. To get the best price and connections, lock in your fare well ahead of time.
Are Lambert Field to Gimpo Airport flight tickets cheaper when they're purchased at the last minute?
Last-minute bookings from Lambert Field to Gimpo Intl. Airport (GMP) can be hit-or-miss. You may be able to score a great bargain, but then again, you could miss out entirely! If you'd prefer to play it safe and start your trip planning ahead of time, Expedia compares flight deals up to a year in advance. Just keep in mind that not all airlines advertise their prices that far in advance. Our suggestion? Check back often as updates are made regularly.

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