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Cheap flights from Seoul Gimpo Intl Airport to St. Louis from $873

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 St. Louis departing on 8/14. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Seoul Gimpo Intl Airport to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Japan Airlines Logo
8:00 am - 11:42 pm
GMP
-
STL
30h 42m
2 stops
Japan Airlines Logo
7:00 am - 6:20 pm
STL
-
GMP
44h 20m
2 stops
$1,599Japan Airlines
Thu, Nov 19 - Sun, Nov 22
Japan Airlines Logo
8:00 am - 11:42 pm
GMP
-
STL
30h 42m
2 stops
Japan Airlines Logo
7:00 am - 6:20 pm
STL
-
GMP
44h 20m
2 stops
$1,608Japan Airlines
Thu, Nov 19 - Sun, Nov 22
Japan Airlines Logo
8:00 am - 11:42 pm
GMP
-
STL
30h 42m
2 stops
Japan Airlines Logo
7:00 am - 6:20 pm
STL
-
GMP
44h 20m
2 stops
$1,621Japan Airlines
Thu, Nov 19 - Sun, Nov 22
Japan Airlines Logo
8:00 am - 11:42 pm
GMP
-
STL
30h 42m
2 stops
Japan Airlines Logo
7:00 am - 6:20 pm
STL
-
GMP
44h 20m
2 stops
$1,625Japan Airlines
Thu, Nov 19 - Sun, Nov 22
Multiple Airlines Logo
12:40 pm - 8:24 pm
GMP
-
STL
21h 44m
2 stops
Multiple Airlines Logo
8:55 am - 10:25 pm
STL
-
GMP
23h 30m
2 stops
$1,636Multiple Airlines
Tue, Aug 18 - Tue, Aug 25
Multiple Airlines Logo
8:10 am - 8:24 pm
GMP
-
STL
26h 14m
2 stops
Multiple Airlines Logo
8:55 am - 10:25 pm
STL
-
GMP
23h 30m
2 stops
$1,963Multiple Airlines
Sun, Aug 16 - Sun, Aug 23

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Japan Airlines flights from Seoul Gimpo Intl Airport to St. Louis

Our best Japan Airlines deals on Seoul Gimpo Intl Airport to St. Louis flight tickets
Japan Airlines
Nov 19
GMP8:00 amSeoul Gimpo Intl
30h 42m
2 stops
STL11:42 pmLambert-St Louis
Nov 22
STL7:00 amLambert-St Louis
44h 20m
2 stops
GMP6:20 pmSeoul Gimpo Intl
$1,599
Japan Airlines
Nov 19
GMP8:00 amSeoul Gimpo Intl
30h 42m
2 stops
STL11:42 pmLambert-St Louis
Nov 22
STL7:00 amLambert-St Louis
44h 20m
2 stops
GMP6:20 pmSeoul Gimpo Intl
$1,608
Japan Airlines
Nov 19
GMP8:00 amSeoul Gimpo Intl
30h 42m
2 stops
STL11:42 pmLambert-St Louis
Nov 22
STL7:00 amLambert-St Louis
44h 20m
2 stops
GMP6:20 pmSeoul Gimpo Intl
$1,621

momondo Fare Finder

 
Customize your flight search to find flights from Seoul Gimpo Intl Airport to St. Louis 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 July 6, 2026.
Use the filters below to find and compare flights from Seoul Gimpo Intl Airport to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Thu 11/19

8:00 am-11:42 pm

2 stops30h 42m

Lambert-St Louis

Sun 11/22

7:00 am-6:20 pm

2 stops44h 20m

$1,599

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Thu 11/19

8:00 am-11:42 pm

2 stops30h 42m

Lambert-St Louis

Sun 11/22

7:00 am-6:20 pm

2 stops44h 20m

$1,608

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Thu 11/19

8:00 am-11:42 pm

2 stops30h 42m

Lambert-St Louis

Sun 11/22

7:00 am-6:20 pm

2 stops44h 20m

$1,621

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Thu 11/19

8:00 am-11:42 pm

2 stops30h 42m

Lambert-St Louis

Sun 11/22

7:00 am-6:20 pm

2 stops44h 20m

$1,625
Quickest round-trip

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Tue 8/18

12:40 pm-8:24 pm

2 stops21h 44m

Lambert-St Louis

Tue 8/25

8:55 am-10:25 pm

2 stops23h 30m

$1,636

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Sun 8/16

8:10 am-8:24 pm

2 stops26h 14m

Lambert-St Louis

Sun 8/23

8:55 am-10:25 pm

2 stops23h 30m

$1,963
Cheapest one-way

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Fri 8/14

12:40 pm-6:15 pm

3 stops43h 35m

$873

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Wed 8/19

8:10 am-2:06 pm

3 stops43h 56m

$893

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Mon 8/17

3:45 pm-11:59 pm

3 stops46h 14m

$896

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Tue 8/18

3:45 pm-2:06 pm

3 stops36h 21m

$898

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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When to book flights from Seoul Gimpo Intl Airport to St. Louis

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

Cheap Seoul Gimpo Intl Airport to St. Louis (GMP to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seoul Gimpo Intl Airport to St. Louis

Fastest flight time

21h 44m

Direct flights

None
The fastest flight from Seoul Gimpo Intl Airport to St. Louis takes 21h 44m
There are no direct flights from Seoul Gimpo Intl Airport to St. Louis. There are no popular flight routes from Seoul Gimpo Intl Airport to St. Louis.
Search flight deals

Frequently asked questions about flying from Seoul Gimpo Intl Airport to St. Louis

  • How far is Seoul Gimpo Intl to Lambert-St Louis by plane?

    The straight-line distance from Seoul Gimpo Intl to Lambert-St Louis is 6665.9 mi. In terms of flight time, this usually takes a little over 21h 44m.

  • When did momondo last update prices for flights from Seoul Gimpo Intl Airport to Lambert-St Louis Airport?

    Prices for flights from Seoul Gimpo Intl Airport to Lambert-St Louis Airport refresh daily.

  • How old do you have to be to fly from Seoul Gimpo Intl Airport to Lambert-St Louis Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seoul Gimpo Intl Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Frequently asked questions about flying from Seoul Gimpo Intl Airport to St. Louis

  • How do I get Price Alerts for flights from Seoul Gimpo Intl Airport to St. Louis?

    Confirm your travel details to search for the latest offers for flights from Seoul Gimpo Intl Airport to St. Louis. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from Seoul Gimpo Intl Airport to St. Louis with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Fairview Heights
Hermann
Maryland Heights
Florissant
St. Peters
O'Fallon
Collinsville
Alton
Farmington
Wentzville
Clayton
Fenton
Festus
Eureka
Litchfield
Edwardsville
Grafton
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Seoul to St. Louis?

It is quick and easy to find Seoul to St. Louis 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 St. Louis that suits you.

Can I find flights from Seoul to St. Louis with flexible booking policies on momondo?

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

How can momondo help me find flights from Seoul to St. Louis?

momondo provides multiple filters to help you find the best flight to St. Louis 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 St. Louis right now. Can momondo alert me if prices change?

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

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