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Cheap flights from St. Louis to Seoul from $807

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 7/15. 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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Find the cheapest flights from St. Louis to Seoul

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:31 am - 9:15 pm
STL
-
GMP
21h 44m
2 stops
Multiple Airlines Logo
8:00 am - 4:24 pm
GMP
-
STL
22h 24m
2 stops
$1,457Multiple Airlines
Wed, Aug 19 - Wed, Sep 2
Japan Airlines Logo
8:36 am - 9:15 pm
STL
-
GMP
22h 39m
2 stops
Japan Airlines Logo
8:00 am - 2:25 pm
GMP
-
STL
20h 25m
2 stops
$1,512Japan Airlines
Mon, Sep 7 - Fri, Sep 11
Japan Airlines Logo
7:44 am - 9:15 pm
STL
-
GMP
23h 31m
2 stops
Japan Airlines Logo
8:00 am - 6:38 pm
GMP
-
STL
24h 38m
2 stops
$1,531Japan Airlines
Mon, Sep 14 - Thu, Sep 17
Multiple Airlines Logo
9:46 am - 9:15 pm
STL
-
GMP
21h 29m
2 stops
Multiple Airlines Logo
8:00 am - 2:25 pm
GMP
-
STL
20h 25m
2 stops
$1,563Multiple Airlines
Sun, Sep 20 - Fri, Oct 2
Japan Airlines Logo
9:31 am - 5:55 pm
STL
-
GMP
42h 24m
2 stops
Japan Airlines Logo
8:00 am - 2:25 pm
GMP
-
STL
20h 25m
2 stops
$1,564Japan Airlines
Mon, Sep 7 - Fri, Sep 11
Japan Airlines Logo
9:46 am - 5:55 pm
STL
-
GMP
42h 09m
2 stops
Japan Airlines Logo
12:05 pm - 2:25 pm
GMP
-
STL
40h 20m
2 stops
$1,571Japan Airlines
Thu, Sep 10 - Mon, Sep 14
Japan Airlines Logo
7:44 am - 9:15 pm
STL
-
GMP
23h 31m
2 stops
Japan Airlines Logo
8:00 am - 2:25 pm
GMP
-
STL
20h 25m
2 stops
$1,720Japan Airlines
Mon, Sep 21 - Thu, Oct 1
Japan Airlines Logo
8:36 am - 9:15 pm
STL
-
GMP
22h 39m
2 stops
Japan Airlines Logo
12:05 pm - 10:55 pm
GMP
-
STL
24h 50m
2 stops
$1,723Japan Airlines
Thu, Aug 6 - Fri, Aug 21
Japan Airlines Logo
7:44 am - 9:15 pm
STL
-
GMP
23h 31m
2 stops
Japan Airlines Logo
8:00 am - 2:25 pm
GMP
-
STL
20h 25m
2 stops
$1,768Japan Airlines
Mon, Sep 21 - Fri, Oct 2
Japan Airlines Logo
8:30 am - 10:05 pm
STL
-
GMP
23h 35m
2 stops
Japan Airlines Logo
8:00 am - 11:42 pm
GMP
-
STL
30h 42m
2 stops
$1,809Japan Airlines
Thu, Oct 29 - Sat, Nov 7

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 7
STL8:36 amLambert-St Louis
22h 39m
2 stops
GMP9:15 pmSeoul Gimpo Intl
Sep 11
GMP8:00 amSeoul Gimpo Intl
20h 25m
2 stops
STL2:25 pmLambert-St Louis
$1,512
Japan Airlines
Sep 14
STL7:44 amLambert-St Louis
23h 31m
2 stops
GMP9:15 pmSeoul Gimpo Intl
Sep 17
GMP8:00 amSeoul Gimpo Intl
24h 38m
2 stops
STL6:38 pmLambert-St Louis
$1,531
Japan Airlines
Sep 7
STL9:31 amLambert-St Louis
42h 24m
2 stops
GMP5:55 pmSeoul Gimpo Intl
Sep 11
GMP8:00 amSeoul Gimpo Intl
20h 25m
2 stops
STL2:25 pmLambert-St Louis
$1,564

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 May 9, 2026.
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

Cheapest round-trip

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Wed 8/19

9:31 am-9:15 pm

2 stops21h 44m

Seoul Gimpo Intl

Wed 9/2

8:00 am-4:24 pm

2 stops22h 24m

$1,457

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Mon 9/7

8:36 am-9:15 pm

2 stops22h 39m

Seoul Gimpo Intl

Fri 9/11

8:00 am-2:25 pm

2 stops20h 25m

$1,512

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Mon 9/14

7:44 am-9:15 pm

2 stops23h 31m

Seoul Gimpo Intl

Thu 9/17

8:00 am-6:38 pm

2 stops24h 38m

$1,531
Quickest round-trip

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Sun 9/20

9:46 am-9:15 pm

2 stops21h 29m

Seoul Gimpo Intl

Fri 10/2

8:00 am-2:25 pm

2 stops20h 25m

$1,563

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Mon 9/7

9:31 am-5:55 pm

2 stops42h 24m

Seoul Gimpo Intl

Fri 9/11

8:00 am-2:25 pm

2 stops20h 25m

$1,564

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Thu 9/10

9:46 am-5:55 pm

2 stops42h 09m

Seoul Gimpo Intl

Mon 9/14

12:05 pm-2:25 pm

2 stops40h 20m

$1,571

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Mon 9/21

7:44 am-9:15 pm

2 stops23h 31m

Seoul Gimpo Intl

Thu 10/1

8:00 am-2:25 pm

2 stops20h 25m

$1,720

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Thu 8/6

8:36 am-9:15 pm

2 stops22h 39m

Seoul Gimpo Intl

Fri 8/21

12:05 pm-10:55 pm

2 stops24h 50m

$1,723

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Mon 9/21

7:44 am-9:15 pm

2 stops23h 31m

Seoul Gimpo Intl

Fri 10/2

8:00 am-2:25 pm

2 stops20h 25m

$1,768

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Thu 10/29

8:30 am-10:05 pm

2 stops23h 35m

Seoul Gimpo Intl

Sat 11/7

8:00 am-11:42 pm

2 stops30h 42m

$1,809

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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

21h 44m

Direct flights

None
The fastest flight from St. Louis to Seoul Gimpo Intl Airport takes 21h 44m
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

Frequently asked questions about flying from St. Louis to Seoul Gimpo Intl Airport

  • 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 44m.

  • 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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