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Cheap flights from Seoul Gimpo Intl Airport to St. Louis from $758

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 9/17. 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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Find the cheapest flights from Seoul Gimpo Intl Airport to St. Louis (GMP-STL)

Cheap round-trip flights

ANA Logo
7:50 pm - 10:27 amGMP-STL
29h 37m2 stops
ANA Logo
1:27 pm - 11:20 amSTL-GMP
30h 53m2 stops
$1,237ANA
Find Deal
Thu, Feb 19 - Mon, Feb 23
ANA Logo
12:25 pm - 5:14 pmGMP-STL
43h 49m2 stops
ANA Logo
1:27 pm - 11:20 amSTL-GMP
30h 53m2 stops
$1,242ANA
Find Deal
Thu, Feb 19 - Mon, Feb 23
Japan Airlines Logo
7:55 am - 1:23 pmGMP-STL
19h 28m2 stops
Japan Airlines Logo
8:49 am - 9:50 pmSTL-GMP
23h 01m2 stops
$1,267Japan Airlines
Find Deal
Mon, Sep 15 - Tue, Oct 14
Japan Airlines Logo
7:55 am - 1:23 pmGMP-STL
19h 28m2 stops
Japan Airlines Logo
8:49 am - 9:50 pmSTL-GMP
23h 01m2 stops
$1,269Japan Airlines
Find Deal
Mon, Sep 15 - Tue, Oct 14
Logo
7:55 am - 11:52 amGMP-STL
17h 57m2 stops
Logo
8:49 am - 9:50 pmSTL-GMP
23h 01m2 stops
$1,285
Find Deal
Mon, Sep 15 - Tue, Oct 14
Japan Airlines Logo
7:55 am - 8:32 pmGMP-STL
26h 37m2 stops
Japan Airlines Logo
8:42 am - 6:20 pmSTL-GMP
43h 38m2 stops
$1,342Japan Airlines
Find Deal
Wed, Sep 10 - Thu, Oct 30
Japan Airlines Logo
7:55 am - 1:23 pmGMP-STL
19h 28m2 stops
Japan Airlines Logo
8:49 am - 9:50 pmSTL-GMP
23h 01m2 stops
$1,401Japan Airlines
Find Deal
Mon, Sep 29 - Tue, Oct 21
ANA Logo
7:40 am - 12:25 pmGMP-STL
42h 45m2 stops
ANA Logo
3:20 pm - 10:20 pmSTL-GMP
41h 00m2 stops
$1,408ANA
Find Deal
Mon, Sep 22 - Tue, Sep 23
Japan Airlines Logo
7:55 am - 1:23 pmGMP-STL
19h 28m2 stops
Japan Airlines Logo
9:56 am - 9:50 pmSTL-GMP
21h 54m2 stops
$1,413Japan Airlines
Find Deal
Mon, Sep 22 - Tue, Sep 23
ANA Logo
12:25 pm - 5:39 pmGMP-STL
44h 14m2 stops
ANA Logo
6:30 am - 11:20 amSTL-GMP
37h 50m2 stops
$1,435ANA
Find Deal
Sun, Nov 23 - Sun, Dec 7

ANA flights from Seoul Gimpo Intl Airport to St. Louis

Our best ANA deals on Seoul Gimpo Intl Airport to St. Louis flight tickets
ANA
Feb 19
GMP7:50 pmSeoul Gimpo Intl
29h 37m
2 stops
STL10:27 amLambert-St Louis
Feb 23
STL1:27 pmLambert-St Louis
30h 53m
2 stops
GMP11:20 amSeoul Gimpo Intl
$1,237
Find similar
ANA
Feb 19
GMP12:25 pmSeoul Gimpo Intl
43h 49m
2 stops
STL5:14 pmLambert-St Louis
Feb 23
STL1:27 pmLambert-St Louis
30h 53m
2 stops
GMP11:20 amSeoul Gimpo Intl
$1,242
Find similar
ANA
Sep 22
GMP7:40 amSeoul Gimpo Intl
42h 45m
2 stops
STL12:25 pmLambert-St Louis
Sep 23
STL3:20 pmLambert-St Louis
41h 00m
2 stops
GMP10:20 pmSeoul Gimpo Intl
$1,408
Find similar

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
GMP7:55 amSeoul Gimpo Intl
19h 28m
2 stops
STL1:23 pmLambert-St Louis
Oct 14
STL8:49 amLambert-St Louis
23h 01m
2 stops
GMP9:50 pmSeoul Gimpo Intl
$1,267
Find similar
Japan Airlines
Sep 15
GMP7:55 amSeoul Gimpo Intl
19h 28m
2 stops
STL1:23 pmLambert-St Louis
Oct 14
STL8:49 amLambert-St Louis
23h 01m
2 stops
GMP9:50 pmSeoul Gimpo Intl
$1,269
Find similar
Japan Airlines
Sep 10
GMP7:55 amSeoul Gimpo Intl
26h 37m
2 stops
STL8:32 pmLambert-St Louis
Oct 30
STL8:42 amLambert-St Louis
43h 38m
2 stops
GMP6:20 pmSeoul Gimpo Intl
$1,342
Find similar

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 August 25, 2025.
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

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Thu 2/19

7:50 pm-10:27 am

2 stops29h 37m

Lambert-St Louis

Mon 2/23

1:27 pm-11:20 am

2 stops30h 53m

$1,237

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Thu 2/19

12:25 pm-5:14 pm

2 stops43h 49m

Lambert-St Louis

Mon 2/23

1:27 pm-11:20 am

2 stops30h 53m

$1,242

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Mon 9/15

7:55 am-1:23 pm

2 stops19h 28m

Lambert-St Louis

Tue 10/14

8:49 am-9:50 pm

2 stops23h 01m

$1,267

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Mon 9/15

7:55 am-1:23 pm

2 stops19h 28m

Lambert-St Louis

Tue 10/14

8:49 am-9:50 pm

2 stops23h 01m

$1,269

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Mon 9/15

7:55 am-11:52 am

2 stops17h 57m

Lambert-St Louis

Tue 10/14

8:49 am-9:50 pm

2 stops23h 01m

$1,285

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Wed 9/10

7:55 am-8:32 pm

2 stops26h 37m

Lambert-St Louis

Thu 10/30

8:42 am-6:20 pm

2 stops43h 38m

$1,342

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Mon 9/29

7:55 am-1:23 pm

2 stops19h 28m

Lambert-St Louis

Tue 10/21

8:49 am-9:50 pm

2 stops23h 01m

$1,401

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Mon 9/22

7:40 am-12:25 pm

2 stops42h 45m

Lambert-St Louis

Tue 9/23

3:20 pm-10:20 pm

2 stops41h 00m

$1,408

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Mon 9/22

7:55 am-1:23 pm

2 stops19h 28m

Lambert-St Louis

Tue 9/23

9:56 am-9:50 pm

2 stops21h 54m

$1,413

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Sun 11/23

12:25 pm-5:39 pm

2 stops44h 14m

Lambert-St Louis

Sun 12/7

6:30 am-11:20 am

2 stops37h 50m

$1,435

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from Seoul Gimpo Intl Airport to St. Louis

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 day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Wednesday when prices can be found for as low as $1,203. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $1,719. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Seoul Gimpo Intl Airport in the evening is the least expensive time of day to depart. momondo users have found prices as low as $1,112 when looking at flights departing in the evening. In the morning is when there is more demand to fly to St. Louis, so prices are often more expensive at around $1,719 per ticket.

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

Direct flights

None
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.
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  • 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 17h 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.

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
O'Fallon
Fenton
Collinsville
Wentzville
Alton
St. Peters
Festus
Farmington
Glencoe
Clayton
Edwardsville
Eureka
Litchfield
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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