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Cheap flights from St. Louis to Seoul from $570

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 5/29. 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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0 bags

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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 pm
STL
-
GMP
24h 01m2 stops
Japan Airlines Logo
7:40 pm - 11:59 pm
GMP
-
STL
43h 19m2 stops
$780Japan Airlines
Wed, Jan 21 - Sun, Jan 25
Japan Airlines Logo
7:04 am - 10:05 pm
STL
-
GMP
24h 01m2 stops
Japan Airlines Logo
8:00 am - 6:16 pm
GMP
-
STL
25h 16m2 stops
$866Japan Airlines
Tue, Jan 13 - Tue, Jan 20
Japan Airlines Logo
7:04 am - 10:55 am
STL
-
GMP
36h 51m2 stops
Japan Airlines Logo
7:40 pm - 11:59 pm
GMP
-
STL
43h 19m2 stops
$890Japan Airlines
Wed, Jan 21 - Sun, Jan 25
Japan Airlines Logo
7:04 am - 10:55 am
STL
-
GMP
36h 51m2 stops
Japan Airlines Logo
12:05 pm - 11:59 pm
GMP
-
STL
26h 54m2 stops
$984Japan Airlines
Sat, Jan 31 - Sat, Feb 7
Japan Airlines Logo
7:15 am - 10:05 pm
STL
-
GMP
23h 50m2 stops
Japan Airlines Logo
12:05 pm - 11:59 pm
GMP
-
STL
26h 54m2 stops
$1,056Japan Airlines
Sun, Jan 11 - Sat, Jan 17
Japan Airlines Logo
6:30 am - 9:50 pm
STL
-
GMP
25h 20m2 stops
Japan Airlines Logo
7:55 am - 1:06 pm
GMP
-
STL
19h 11m2 stops
$1,441Japan Airlines
Thu, May 28 - Sat, Jun 13
Multiple Airlines Logo
6:30 am - 9:50 pm
STL
-
GMP
25h 20m2 stops
Multiple Airlines Logo
7:40 am - 8:04 pm
GMP
-
STL
26h 24m2 stops
$1,697Multiple Airlines
Fri, May 29 - Sun, Jun 14
Japan Airlines Logo
6:30 am - 9:50 pm
STL
-
GMP
25h 20m2 stops
Japan Airlines Logo
7:55 am - 1:06 pm
GMP
-
STL
19h 11m2 stops
$1,802Japan Airlines
Thu, May 28 - Sat, Jun 13
ANA Logo
8:17 am - 10:30 pm
STL
-
GMP
24h 13m2 stops
ANA Logo
7:55 pm - 2:27 pm
GMP
-
STL
32h 32m2 stops
$2,107ANA
Thu, Mar 19 - Tue, Mar 31
Japan Airlines Logo
7:00 am - 6:00 pm
STL
-
GMP
21h 00m2 stops
Japan Airlines Logo
7:55 am - 2:26 pm
GMP
-
STL
20h 31m2 stops
$2,332Japan Airlines
Mon, Apr 6 - Sun, Apr 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
Jan 21
STL7:04 amLambert-St Louis
24h 01m
2 stops
GMP10:05 pmSeoul Gimpo Intl
Jan 25
GMP7:40 pmSeoul Gimpo Intl
43h 19m
2 stops
STL11:59 pmLambert-St Louis
$780
Find similar
Japan Airlines
Jan 13
STL7:04 amLambert-St Louis
24h 01m
2 stops
GMP10:05 pmSeoul Gimpo Intl
Jan 20
GMP8:00 amSeoul Gimpo Intl
25h 16m
2 stops
STL6:16 pmLambert-St Louis
$866
Find similar
Japan Airlines
Jan 21
STL7:04 amLambert-St Louis
36h 51m
2 stops
GMP10:55 amSeoul Gimpo Intl
Jan 25
GMP7:40 pmSeoul Gimpo Intl
43h 19m
2 stops
STL11:59 pmLambert-St Louis
$890
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
Mar 19
STL8:17 amLambert-St Louis
24h 13m
2 stops
GMP10:30 pmSeoul Gimpo Intl
Mar 31
GMP7:55 pmSeoul Gimpo Intl
32h 32m
2 stops
STL2:27 pmLambert-St Louis
$2,107
Find similar
ANA
Jan 31
STL8:05 amLambert-St Louis
23h 25m
2 stops
GMP10:30 pmSeoul Gimpo Intl
Feb 9
GMP7:50 pmSeoul Gimpo Intl
30h 12m
2 stops
STL11:02 amLambert-St Louis
$15,628
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 December 17, 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

Wed 1/21

7:04 am-10:05 pm

2 stops24h 01m

Seoul Gimpo Intl

Sun 1/25

7:40 pm-11:59 pm

2 stops43h 19m

$780

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Tue 1/13

7:04 am-10:05 pm

2 stops24h 01m

Seoul Gimpo Intl

Tue 1/20

8:00 am-6:16 pm

2 stops25h 16m

$866

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Wed 1/21

7:04 am-10:55 am

2 stops36h 51m

Seoul Gimpo Intl

Sun 1/25

7:40 pm-11:59 pm

2 stops43h 19m

$890

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Sat 1/31

7:04 am-10:55 am

2 stops36h 51m

Seoul Gimpo Intl

Sat 2/7

12:05 pm-11:59 pm

2 stops26h 54m

$984

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Sun 1/11

7:15 am-10:05 pm

2 stops23h 50m

Seoul Gimpo Intl

Sat 1/17

12:05 pm-11:59 pm

2 stops26h 54m

$1,056

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Thu 5/28

6:30 am-9:50 pm

2 stops25h 20m

Seoul Gimpo Intl

Sat 6/13

7:55 am-1:06 pm

2 stops19h 11m

$1,441

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Fri 5/29

6:30 am-9:50 pm

2 stops25h 20m

Seoul Gimpo Intl

Sun 6/14

7:40 am-8:04 pm

2 stops26h 24m

$1,697

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Thu 5/28

6:30 am-9:50 pm

2 stops25h 20m

Seoul Gimpo Intl

Sat 6/13

7:55 am-1:06 pm

2 stops19h 11m

$1,802

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Thu 3/19

8:17 am-10:30 pm

2 stops24h 13m

Seoul Gimpo Intl

Tue 3/31

7:55 pm-2:27 pm

2 stops32h 32m

$2,107

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Mon 4/6

7:00 am-6:00 pm

2 stops21h 00m

Seoul Gimpo Intl

Sun 4/12

7:55 am-2:26 pm

2 stops20h 31m

$2,332

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

Fastest flight time

24h 00m

Direct flights

None
The fastest flight from St. Louis to Seoul Gimpo Intl Airport takes 24h 00m
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.
Search flight deals

  • 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 24h 00m.

  • 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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