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Cheap flights from St. Louis to Seoul from $465

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Seoul departing on 11/11. 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 St. Louis to Seoul (STL-GMP)

Cheap round-trip flights

Japan Airlines Logo
8:50 am - 10:45 amSTL-GMP
35h 55m2 stops
Japan Airlines Logo
7:55 am - 7:22 pmGMP-STL
25h 27m2 stops
$871Japan Airlines
Find Deal
Mon, Sep 1 - Mon, Sep 8
Japan Airlines Logo
9:27 am - 9:50 pmSTL-GMP
22h 23m2 stops
Japan Airlines Logo
7:55 am - 1:31 pmGMP-STL
19h 36m2 stops
$872Japan Airlines
Find Deal
Thu, Sep 4 - Wed, Sep 17
Japan Airlines Logo
7:23 am - 10:45 amSTL-GMP
37h 22m2 stops
Japan Airlines Logo
12:05 pm - 11:59 pmGMP-STL
25h 54m2 stops
$882Japan Airlines
Find Deal
Thu, Sep 18 - Thu, Sep 25
Japan Airlines Logo
7:23 am - 10:45 amSTL-GMP
37h 22m2 stops
Japan Airlines Logo
7:55 am - 1:23 pmGMP-STL
19h 28m2 stops
$907Japan Airlines
Find Deal
Thu, Sep 18 - Thu, Sep 25
Japan Airlines Logo
7:23 am - 6:00 pmSTL-GMP
44h 37m2 stops
Japan Airlines Logo
7:20 pm - 1:23 pmGMP-STL
32h 03m2 stops
$917Japan Airlines
Find Deal
Mon, Sep 1 - Mon, Sep 8
Japan Airlines Logo
6:25 am - 10:20 pmSTL-GMP
24h 55m2 stops
Japan Airlines Logo
7:50 am - 11:07 amGMP-STL
18h 17m2 stops
$990Japan Airlines
Find Deal
Tue, Dec 16 - Sat, Dec 20
Logo
7:16 am - 9:50 pmSTL-GMP
24h 34m2 stops
Logo
7:55 am - 1:23 pmGMP-STL
19h 28m2 stops
$1,065
Find Deal
Thu, Sep 18 - Thu, Sep 25
ANA Logo
11:05 am - 6:35 pmSTL-GMP
40h 30m2 stops
ANA Logo
7:50 pm - 10:27 amGMP-STL
29h 37m2 stops
$2,694ANA
Find Deal
Thu, Dec 18 - Fri, Jan 9
ANA Logo
8:20 am - 11:05 amSTL-GMP
36h 45m2 stops
ANA Logo
7:55 pm - 4:28 pmGMP-STL
34h 33m2 stops
$3,963ANA
Find Deal
Wed, Sep 24 - Wed, Oct 1
ANA Logo
8:25 am - 10:20 pmSTL-GMP
23h 55m2 stops
ANA Logo
12:40 pm - 4:28 pmGMP-STL
41h 48m2 stops
$4,013ANA
Find Deal
Sat, Sep 27 - Wed, Oct 1

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

Our best Japan Airlines deals on St. Louis to Seoul Gimpo Intl Airport flight tickets
Japan Airlines
Sep 1
STL8:50 amLambert-St Louis
35h 55m
2 stops
GMP10:45 amSeoul Gimpo Intl
Sep 8
GMP7:55 amSeoul Gimpo Intl
25h 27m
2 stops
STL7:22 pmLambert-St Louis
$871
Find similar
Japan Airlines
Sep 4
STL9:27 amLambert-St Louis
22h 23m
2 stops
GMP9:50 pmSeoul Gimpo Intl
Sep 17
GMP7:55 amSeoul Gimpo Intl
19h 36m
2 stops
STL1:31 pmLambert-St Louis
$872
Find similar
Japan Airlines
Sep 18
STL7:23 amLambert-St Louis
37h 22m
2 stops
GMP10:45 amSeoul Gimpo Intl
Sep 25
GMP12:05 pmSeoul Gimpo Intl
25h 54m
2 stops
STL11:59 pmLambert-St Louis
$882
Find similar

ANA flights from St. Louis to Seoul Gimpo Intl Airport

Our best ANA deals on St. Louis to Seoul Gimpo Intl Airport flight tickets
ANA
Dec 18
STL11:05 amLambert-St Louis
40h 30m
2 stops
GMP6:35 pmSeoul Gimpo Intl
Jan 9
GMP7:50 pmSeoul Gimpo Intl
29h 37m
2 stops
STL10:27 amLambert-St Louis
$2,694
Find similar
ANA
Sep 24
STL8:20 amLambert-St Louis
36h 45m
2 stops
GMP11:05 amSeoul Gimpo Intl
Oct 1
GMP7:55 pmSeoul Gimpo Intl
34h 33m
2 stops
STL4:28 pmLambert-St Louis
$3,963
Find similar
ANA
Sep 27
STL8:25 amLambert-St Louis
23h 55m
2 stops
GMP10:20 pmSeoul Gimpo Intl
Oct 1
GMP12:40 pmSeoul Gimpo Intl
41h 48m
2 stops
STL4:28 pmLambert-St Louis
$4,013
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis 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 August 21, 2025.
Use the filters below to find and compare flights from St. Louis to Seoul Gimpo Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Mon 9/1

8:50 am-10:45 am

2 stops35h 55m

Seoul Gimpo Intl

Mon 9/8

7:55 am-7:22 pm

2 stops25h 27m

$871

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Thu 9/4

9:27 am-9:50 pm

2 stops22h 23m

Seoul Gimpo Intl

Wed 9/17

7:55 am-1:31 pm

2 stops19h 36m

$872

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Thu 9/18

7:23 am-10:45 am

2 stops37h 22m

Seoul Gimpo Intl

Thu 9/25

12:05 pm-11:59 pm

2 stops25h 54m

$882

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Thu 9/18

7:23 am-10:45 am

2 stops37h 22m

Seoul Gimpo Intl

Thu 9/25

7:55 am-1:23 pm

2 stops19h 28m

$907

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Mon 9/1

7:23 am-6:00 pm

2 stops44h 37m

Seoul Gimpo Intl

Mon 9/8

7:20 pm-1:23 pm

2 stops32h 03m

$917

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Tue 12/16

6:25 am-10:20 pm

2 stops24h 55m

Seoul Gimpo Intl

Sat 12/20

7:50 am-11:07 am

2 stops18h 17m

$990

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Thu 9/18

7:16 am-9:50 pm

2 stops24h 34m

Seoul Gimpo Intl

Thu 9/25

7:55 am-1:23 pm

2 stops19h 28m

$1,065

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Thu 12/18

11:05 am-6:35 pm

2 stops40h 30m

Seoul Gimpo Intl

Fri 1/9

7:50 pm-10:27 am

2 stops29h 37m

$2,694

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Wed 9/24

8:20 am-11:05 am

2 stops36h 45m

Seoul Gimpo Intl

Wed 10/1

7:55 pm-4:28 pm

2 stops34h 33m

$3,963

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Sat 9/27

8:25 am-10:20 pm

2 stops23h 55m

Seoul Gimpo Intl

Wed 10/1

12:40 pm-4:28 pm

2 stops41h 48m

$4,013

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
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See travel insights to Seoul from

How to get the cheapest flight ticket from St. Louis 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 Lambert-St Louis to Seoul Gimpo Intl?

Japan Airlines is the most popular carrier operating from Lambert-St Louis to Seoul Gimpo Intl

When to book flights from St. Louis to Seoul Gimpo Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis 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 St. Louis to Seoul Gimpo Intl Airport (STL to GMP) flight deals and tips

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

Direct flights

None
There are no direct flights from St. Louis to Seoul Gimpo Intl Airport. There are no popular flight routes from St. Louis to Seoul Gimpo Intl Airport.
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  • How far is Lambert-St Louis to Seoul Gimpo Intl by plane?

    There are 6665.9 mi between Lambert-St Louis and Seoul Gimpo Intl. In terms of flight time, this usually takes a little over 22h 23m.

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

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Seoul Gimpo Intl Airport.

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

    The travel and health documents you'll need for your trip to Seoul Gimpo Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seoul Gimpo Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

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

It is quick and easy to find St. Louis 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 St. Louis to Seoul with flexible booking policies on momondo?

All flight searches from St. Louis to Seoul on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Seoul from St. Louis.

I’m not ready to book a flight from St. Louis to Seoul right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Seoul from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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