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Cheap flights from Seoul Gimpo Intl Airport to St. Louis from $703

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 5/20. 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
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 - 11:56 pm
GMP
-
STL
29h 56m
2 stops
Japan Airlines Logo
8:36 am - 9:15 pm
STL
-
GMP
22h 39m
2 stops
$1,474Japan Airlines
Tue, Jun 23 - Tue, Jul 14
Japan Airlines Logo
8:00 am - 11:56 pm
GMP
-
STL
29h 56m
2 stops
Japan Airlines Logo
8:36 am - 9:15 pm
STL
-
GMP
22h 39m
2 stops
$1,497Japan Airlines
Tue, Jun 23 - Tue, Jul 14
Japan Airlines Logo
12:05 pm - 2:25 pm
GMP
-
STL
40h 20m
2 stops
Japan Airlines Logo
6:30 am - 9:15 pm
STL
-
GMP
48h 45m
2 stops
$1,551Japan Airlines
Tue, Sep 15 - Sat, Sep 19
Japan Airlines Logo
8:00 am - 2:25 pm
GMP
-
STL
20h 25m
2 stops
Japan Airlines Logo
6:30 am - 9:15 pm
STL
-
GMP
24h 45m
2 stops
$1,555Japan Airlines
Thu, Sep 10 - Mon, Sep 14
Japan Airlines Logo
8:00 am - 11:56 pm
GMP
-
STL
29h 56m
2 stops
Japan Airlines Logo
8:36 am - 9:15 pm
STL
-
GMP
22h 39m
2 stops
$1,558Japan Airlines
Tue, Jun 30 - Tue, Jul 14
Japan Airlines Logo
8:00 am - 2:25 pm
GMP
-
STL
20h 25m
2 stops
Japan Airlines Logo
6:30 am - 5:55 pm
STL
-
GMP
45h 25m
2 stops
$1,561Japan Airlines
Thu, Sep 10 - Mon, Sep 14
Japan Airlines Logo
8:00 am - 11:56 pm
GMP
-
STL
29h 56m
2 stops
Japan Airlines Logo
6:36 am - 9:15 pm
STL
-
GMP
24h 39m
2 stops
$1,585Japan Airlines
Tue, Jun 30 - Tue, Jul 14
Japan Airlines Logo
12:05 pm - 2:25 pm
GMP
-
STL
40h 20m
2 stops
Japan Airlines Logo
6:30 am - 9:15 pm
STL
-
GMP
48h 45m
2 stops
$1,605Japan Airlines
Tue, Sep 15 - Sat, Sep 19
Japan Airlines Logo
8:00 am - 2:25 pm
GMP
-
STL
20h 25m
2 stops
Japan Airlines Logo
6:30 am - 9:15 pm
STL
-
GMP
48h 45m
2 stops
$1,612Japan Airlines
Tue, Sep 15 - Sat, Sep 19
Japan Airlines Logo
7:15 pm - 1:03 pm
GMP
-
STL
31h 48m
2 stops
Japan Airlines Logo
3:23 pm - 10:05 pm
STL
-
GMP
39h 42m
2 stops
$1,675Japan Airlines
Mon, Oct 19 - Sat, Nov 21

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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
Sep 15
GMP7:15 pmSeoul Gimpo Intl
33h 10m
2 stops
STL2:25 pmLambert-St Louis
Sep 19
STL6:30 amLambert-St Louis
48h 45m
2 stops
GMP9:15 pmSeoul Gimpo Intl
$1,461
Japan Airlines
Jun 23
GMP8:00 amSeoul Gimpo Intl
29h 56m
2 stops
STL11:56 pmLambert-St Louis
Jul 14
STL8:36 amLambert-St Louis
22h 39m
2 stops
GMP9:15 pmSeoul Gimpo Intl
$1,474
Japan Airlines
Jun 23
GMP8:00 amSeoul Gimpo Intl
29h 56m
2 stops
STL11:56 pmLambert-St Louis
Jul 14
STL8:36 amLambert-St Louis
22h 39m
2 stops
GMP9:15 pmSeoul Gimpo Intl
$1,497

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 April 23, 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

Tue 6/23

8:00 am-11:56 pm

2 stops29h 56m

Lambert-St Louis

Tue 7/14

8:36 am-9:15 pm

2 stops22h 39m

$1,474

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Tue 6/23

8:00 am-11:56 pm

2 stops29h 56m

Lambert-St Louis

Tue 7/14

8:36 am-9:15 pm

2 stops22h 39m

$1,497

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Tue 9/15

12:05 pm-2:25 pm

2 stops40h 20m

Lambert-St Louis

Sat 9/19

6:30 am-9:15 pm

2 stops48h 45m

$1,551
Quickest round-trip

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Thu 9/10

8:00 am-2:25 pm

2 stops20h 25m

Lambert-St Louis

Mon 9/14

6:30 am-9:15 pm

2 stops24h 45m

$1,555

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Tue 6/30

8:00 am-11:56 pm

2 stops29h 56m

Lambert-St Louis

Tue 7/14

8:36 am-9:15 pm

2 stops22h 39m

$1,558

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Thu 9/10

8:00 am-2:25 pm

2 stops20h 25m

Lambert-St Louis

Mon 9/14

6:30 am-5:55 pm

2 stops45h 25m

$1,561

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Tue 6/30

8:00 am-11:56 pm

2 stops29h 56m

Lambert-St Louis

Tue 7/14

6:36 am-9:15 pm

2 stops24h 39m

$1,585

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Tue 9/15

12:05 pm-2:25 pm

2 stops40h 20m

Lambert-St Louis

Sat 9/19

6:30 am-9:15 pm

2 stops48h 45m

$1,605

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Tue 9/15

8:00 am-2:25 pm

2 stops20h 25m

Lambert-St Louis

Sat 9/19

6:30 am-9:15 pm

2 stops48h 45m

$1,612

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Mon 10/19

7:15 pm-1:03 pm

2 stops31h 48m

Lambert-St Louis

Sat 11/21

3:23 pm-10:05 pm

2 stops39h 42m

$1,675

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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

24h 57m

Direct flights

None
The fastest flight from Seoul Gimpo Intl Airport to St. Louis takes 24h 57m
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 24h 57m.

  • 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
Hermann
Fairview Heights
Maryland Heights
O'Fallon
Florissant
St. Peters
Collinsville
Wentzville
Alton
Fenton
Farmington
Festus
Clayton
Eureka
Litchfield
Edwardsville
Shrewsbury
Grafton

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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