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Cheap flights from St. Louis to Seoul from $448

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 11/4. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Japan Airlines Logo
7:04 am - 10:05 pmSTL-GMP
24h 01m2 stops
Japan Airlines Logo
8:00 am - 11:08 pmGMP-STL
30h 08m2 stops
$883Japan Airlines
Find Deal
Tue, Feb 10 - Tue, Feb 17
Japan Airlines Logo
6:55 am - 10:05 pmSTL-GMP
24h 10m2 stops
Japan Airlines Logo
12:05 pm - 11:57 pmGMP-STL
26h 52m2 stops
$1,048Japan Airlines
Find Deal
Thu, Dec 4 - Thu, Dec 11
Japan Airlines Logo
3:22 pm - 6:20 pmSTL-GMP
35h 58m2 stops
Japan Airlines Logo
12:05 pm - 11:57 pmGMP-STL
26h 52m2 stops
$1,051Japan Airlines
Find Deal
Mon, Dec 8 - Mon, Dec 15
Multiple Airlines Logo
6:55 am - 10:05 pmSTL-GMP
24h 10m2 stops
Multiple Airlines Logo
12:05 pm - 11:57 pmGMP-STL
26h 52m2 stops
$1,061Multiple Airlines
Find Deal
Fri, Dec 5 - Fri, Dec 12
Multiple Airlines Logo
7:01 am - 10:05 pmSTL-GMP
24h 04m2 stops
Multiple Airlines Logo
8:00 am - 4:27 pmGMP-STL
23h 27m2 stops
$1,258Multiple Airlines
Find Deal
Wed, Nov 19 - Wed, Nov 26
Japan Airlines Logo
7:00 am - 10:05 pmSTL-GMP
24h 05m2 stops
Japan Airlines Logo
7:40 pm - 1:29 pmGMP-STL
32h 49m2 stops
$1,359Japan Airlines
Find Deal
Mon, Dec 8 - Sun, Dec 14
Multiple Airlines Logo
6:00 am - 10:05 pmSTL-GMP
25h 05m2 stops
Multiple Airlines Logo
8:00 am - 12:37 pmGMP-STL
19h 37m2 stops
$1,631Multiple Airlines
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Wed, Nov 5 - Wed, Nov 12
ANA Logo
6:15 am - 10:30 pmSTL-GMP
25h 15m2 stops
ANA Logo
7:50 pm - 5:39 pmGMP-STL
36h 49m2 stops
$2,078ANA
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Wed, Nov 5 - Tue, Nov 18
ANA Logo
11:05 am - 11:20 amSTL-GMP
33h 15m2 stops
ANA Logo
7:50 pm - 10:51 amGMP-STL
30h 01m2 stops
$2,173ANA
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Wed, Nov 19 - Wed, Nov 26
ANA Logo
8:00 am - 10:30 pmSTL-GMP
23h 30m2 stops
ANA Logo
7:50 pm - 10:52 amGMP-STL
30h 02m2 stops
$13,277ANA
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Mon, Dec 8 - Mon, Jan 12

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
Feb 10
STL7:04 amLambert-St Louis
24h 01m
2 stops
GMP10:05 pmSeoul Gimpo Intl
Feb 17
GMP8:00 amSeoul Gimpo Intl
30h 08m
2 stops
STL11:08 pmLambert-St Louis
$883
Find similar
Japan Airlines
Dec 4
STL6:55 amLambert-St Louis
24h 10m
2 stops
GMP10:05 pmSeoul Gimpo Intl
Dec 11
GMP12:05 pmSeoul Gimpo Intl
26h 52m
2 stops
STL11:57 pmLambert-St Louis
$1,048
Find similar
Japan Airlines
Dec 8
STL3:22 pmLambert-St Louis
35h 58m
2 stops
GMP6:20 pmSeoul Gimpo Intl
Dec 15
GMP12:05 pmSeoul Gimpo Intl
26h 52m
2 stops
STL11:57 pmLambert-St Louis
$1,051
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
Nov 5
STL6:15 amLambert-St Louis
25h 15m
2 stops
GMP10:30 pmSeoul Gimpo Intl
Nov 18
GMP7:50 pmSeoul Gimpo Intl
36h 49m
2 stops
STL5:39 pmLambert-St Louis
$2,078
Find similar
ANA
Nov 19
STL11:05 amLambert-St Louis
33h 15m
2 stops
GMP11:20 amSeoul Gimpo Intl
Nov 26
GMP7:50 pmSeoul Gimpo Intl
30h 01m
2 stops
STL10:51 amLambert-St Louis
$2,173
Find similar
ANA
Dec 8
STL8:00 amLambert-St Louis
23h 30m
2 stops
GMP10:30 pmSeoul Gimpo Intl
Jan 12
GMP7:50 pmSeoul Gimpo Intl
30h 02m
2 stops
STL10:52 amLambert-St Louis
$13,277
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 October 23, 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

Tue 2/10

7:04 am-10:05 pm

2 stops24h 01m

Seoul Gimpo Intl

Tue 2/17

8:00 am-11:08 pm

2 stops30h 08m

$883

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Thu 12/4

6:55 am-10:05 pm

2 stops24h 10m

Seoul Gimpo Intl

Thu 12/11

12:05 pm-11:57 pm

2 stops26h 52m

$1,048

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Mon 12/8

3:22 pm-6:20 pm

2 stops35h 58m

Seoul Gimpo Intl

Mon 12/15

12:05 pm-11:57 pm

2 stops26h 52m

$1,051

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Fri 12/5

6:55 am-10:05 pm

2 stops24h 10m

Seoul Gimpo Intl

Fri 12/12

12:05 pm-11:57 pm

2 stops26h 52m

$1,061

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Wed 11/19

7:01 am-10:05 pm

2 stops24h 04m

Seoul Gimpo Intl

Wed 11/26

8:00 am-4:27 pm

2 stops23h 27m

$1,258

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Mon 12/8

7:00 am-10:05 pm

2 stops24h 05m

Seoul Gimpo Intl

Sun 12/14

7:40 pm-1:29 pm

2 stops32h 49m

$1,359

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Wed 11/5

6:00 am-10:05 pm

2 stops25h 05m

Seoul Gimpo Intl

Wed 11/12

8:00 am-12:37 pm

2 stops19h 37m

$1,631

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Wed 11/5

6:15 am-10:30 pm

2 stops25h 15m

Seoul Gimpo Intl

Tue 11/18

7:50 pm-5:39 pm

2 stops36h 49m

$2,078

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Wed 11/19

11:05 am-11:20 am

2 stops33h 15m

Seoul Gimpo Intl

Wed 11/26

7:50 pm-10:51 am

2 stops30h 01m

$2,173

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Mon 12/8

8:00 am-10:30 pm

2 stops23h 30m

Seoul Gimpo Intl

Mon 1/12

7:50 pm-10:52 am

2 stops30h 02m

$13,277

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 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 21h 45m.

  • 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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