What is the cheapest airline that flies from Lambert-St Louis to Seoul?

Air Canada, Cathay Pacific, and Japan Airlines are the most popular carriers operating from Lambert-St Louis to Seoul

Which layover airport has the shortest travel time from St. Louis to Seoul?

Flights connecting via Atlanta (ATL) have the shortest average one-way travel time: 18h 11m.

Which airport is the most popular layover for flights between St. Louis and Seoul?

Atlanta (ATL) was the most common stop: 33% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest connection time from St. Louis to Seoul?

Seattle (SEA) has the shortest average layover time for this route: 2h 03m.

What airlines fly to Seoul?

Delta, United Airlines and American Airlines are the top three most popular airlines that fly to Seoul from St. Louis according to our data. Delta is the first choice among our users, with 64% of people opting to fly with this airline when traveling to Seoul. Keep in mind that there are 5 different airlines that fly to Seoul on a routine basis, so you have a few additional options to choose from.

Which layover airport offers the lowest fares from St. Louis to Seoul?

Flights via Minneapolis (MSP) offer the lowest average round-trip price of $916.

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

Prices for flights from Lambert-St Louis Airport to Seoul are updated daily.

How many operators does momondo search for flights from Lambert-St Louis Airport to Seoul?

As of September 2026, there are 5 operators available to choose from for flights from Lambert-St Louis Airport to Seoul.

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

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 Lambert-St Louis Airport to Seoul.

What documentation or ID do you need to fly to Seoul?

The required travel and health documents for your Seoul trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seoul. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$510 Cheap Flights from St. Louis to Seoul in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Seoul

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:29 am - 5:30 pmSTL Lambert-St Louis-ICN Incheon Intl

21h 01m1 stop Seattle/Tacoma Intl

7:35 pm - 11:59 pmICN Incheon Intl-STL Lambert-St Louis

18h 24m1 stop Seattle/Tacoma Intl

$1,080Alaska Airlines

Thu, Sep 24 - Mon, Sep 28

5:18 pm - 1:50 pmSTL Lambert-St Louis-ICN Incheon Intl

29h 32m2 stops Dallas/Fort Worth Hong Kong Intl

8:00 am - 11:44 pmICN Incheon Intl-STL Lambert-St Louis

29h 44m2 stops Hong Kong Intl Seattle/Tacoma Intl

$1,091Multiple Airlines

Mon, Jan 11 - Tue, Mar 30

12:10 pm - 4:05 pmSTL Lambert-St Louis-ICN Incheon Intl

37h 55m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

8:10 pm - 3:26 pmICN Incheon Intl-STL Lambert-St Louis

34h 16m1 stop Toronto Pearson Intl

$1,135Air Canada

Wed, Oct 14 - Tue, Nov 17

4:05 pm - 5:25 pmSTL Lambert-St Louis-ICN Incheon Intl

35h 20m1 stop Toronto Pearson Intl

8:10 pm - 3:26 pmICN Incheon Intl-STL Lambert-St Louis

34h 16m1 stop Toronto Pearson Intl

$1,140Air Canada

Mon, Oct 26 - Wed, Nov 25

6:47 am - 4:25 pmSTL Lambert-St Louis-ICN Incheon Intl

19h 38m1 stop Detroit Metropolitan Wayne County

6:40 pm - 12:44 amICN Incheon Intl-STL Lambert-St Louis

20h 04m1 stop Salt Lake City

$1,196Delta

Thu, Oct 22 - Sun, Oct 25

9:47 am - 5:20 pmSTL Lambert-St Louis-ICN Incheon Intl

17h 33m1 stop Minneapolis St Paul

8:35 pm - 11:21 pmICN Incheon Intl-STL Lambert-St Louis

16h 46m1 stop Minneapolis St Paul

$1,196Delta

Thu, Oct 22 - Sun, Oct 25

5:40 am - 3:45 pmSTL Lambert-St Louis-ICN Incheon Intl

20h 05m1 stop Dallas/Fort Worth

6:50 pm - 10:00 pmICN Incheon Intl-STL Lambert-St Louis

17h 10m1 stop Dallas/Fort Worth

$1,196American Airlines

Thu, Oct 8 - Wed, Oct 28

6:32 am - 3:45 pmSTL Lambert-St Louis-ICN Incheon Intl

19h 13m1 stop Dallas/Fort Worth

6:50 pm - 8:19 pmICN Incheon Intl-STL Lambert-St Louis

16h 29m1 stop Dallas/Fort Worth

$1,196American Airlines

Mon, Oct 5 - Wed, Nov 4

4:17 pm - 5:40 amSTL Lambert-St Louis-ICN Incheon Intl

22h 23m2 stops Houston George Bush Intcntl San Francisco

6:00 pm - 9:55 pmICN Incheon Intl-STL Lambert-St Louis

17h 55m1 stop San Francisco

$1,201United Airlines

Tue, Mar 9 - Tue, Mar 23

7:08 am - 3:00 pmSTL Lambert-St Louis-ICN Incheon Intl

17h 52m1 stop San Francisco

12:45 pm - 6:38 pmICN Incheon Intl-STL Lambert-St Louis

20h 53m2 stops San Francisco Houston George Bush Intcntl

$1,201United Airlines

Mon, Oct 5 - Wed, Nov 4

Cheap last minute flights

Enter your travel dates to find the best prices.

7:00 am - 3:45 pmSTL Lambert-St Louis-ICN Incheon Intl

18h 45m1 stop Dallas/Fort Worth

5:50 pm - 11:43 pmICN Incheon Intl-STL Lambert-St Louis

19h 53m1 stop Dallas/Fort Worth

$1,079American Airlines

Tue, Sep 15 - Thu, Sep 17

7:00 am - 3:45 pmSTL Lambert-St Louis-ICN Incheon Intl

18h 45m1 stop Dallas/Fort Worth

5:50 pm - 12:27 amICN Incheon Intl-STL Lambert-St Louis

20h 37m2 stops Dallas/Fort Worth Chicago O'Hare Intl

$1,084American Airlines

Tue, Sep 15 - Thu, Sep 17

5:00 am - 3:45 pmSTL Lambert-St Louis-ICN Incheon Intl

20h 45m2 stops Chicago O'Hare Intl Dallas/Fort Worth

5:50 pm - 12:27 amICN Incheon Intl-STL Lambert-St Louis

20h 37m2 stops Dallas/Fort Worth Chicago O'Hare Intl

$1,084American Airlines

Tue, Sep 15 - Thu, Sep 17

7:00 am - 3:45 pmSTL Lambert-St Louis-ICN Incheon Intl

18h 45m1 stop Dallas/Fort Worth

5:50 pm - 11:43 pmICN Incheon Intl-STL Lambert-St Louis

19h 53m1 stop Dallas/Fort Worth

$1,124American Airlines

Sun, Sep 13 - Tue, Sep 15

7:00 am - 3:45 pmSTL Lambert-St Louis-ICN Incheon Intl

18h 45m1 stop Dallas/Fort Worth

5:50 pm - 11:43 pmICN Incheon Intl-STL Lambert-St Louis

19h 53m1 stop Dallas/Fort Worth

$1,124American Airlines

Wed, Sep 16 - Fri, Sep 25

5:00 am - 3:45 pmSTL Lambert-St Louis-ICN Incheon Intl

20h 45m2 stops Chicago O'Hare Intl Dallas/Fort Worth

5:50 pm - 12:27 amICN Incheon Intl-STL Lambert-St Louis

20h 37m2 stops Dallas/Fort Worth Chicago O'Hare Intl

$1,129American Airlines

Wed, Sep 16 - Fri, Sep 25

6:30 am - 9:15 pmSTL Lambert-St Louis-GMP Seoul Gimpo Intl

24h 45m2 stops Los Angeles Tokyo Haneda

8:00 am - 10:18 amGMP Seoul Gimpo Intl-STL Lambert-St Louis

40h 18m2 stops Tokyo Haneda Chicago O'Hare Intl

$1,341Japan Airlines

Tue, Sep 15 - Thu, Sep 17

7:36 pm - 11:00 amSTL Lambert-St Louis-ICN Incheon Intl

25h 24m2 stops Seattle/Tacoma Intl Taipei City Taiwan Taoyuan Intl

7:45 pm - 3:38 pmICN Incheon Intl-STL Lambert-St Louis

33h 53m3 stops Taipei City Taiwan Taoyuan Intl San Francisco Chicago O'Hare Intl

$1,438Multiple Airlines

Sun, Sep 13 - Tue, Sep 15

2:40 pm - 4:05 pmSTL Lambert-St Louis-ICN Incheon Intl

35h 25m2 stops Toronto Pearson Intl Vancouver Intl

8:45 pm - 2:00 pmICN Incheon Intl-STL Lambert-St Louis

31h 15m3 stops Calgary Ottawa Toronto Pearson Intl

$1,849Multiple Airlines

Tue, Sep 15 - Thu, Sep 17

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Alaska Airlines flights from St. Louis to Seoul

Our best Alaska Airlines deals on St. Louis to Seoul flight tickets

Alaska Airlines

Sep 24

STL6:29 amLambert-St Louis

21h 01m

1 stop

ICN5:30 pmIncheon Intl

Sep 28

ICN7:35 pmIncheon Intl

18h 24m

1 stop

STL11:59 pmLambert-St Louis

$1,080

Alaska Airlines

Sep 24

STL6:29 amLambert-St Louis

21h 01m

1 stop

ICN5:30 pmIncheon Intl

Sep 28

ICN7:35 pmIncheon Intl

18h 24m

1 stop

STL11:59 pmLambert-St Louis

$1,108

Alaska Airlines

Sep 24

STL6:29 amLambert-St Louis

21h 01m

1 stop

ICN5:30 pmIncheon Intl

Sep 28

ICN7:35 pmIncheon Intl

35h 35m

2 stops

STL5:10 pmLambert-St Louis

$1,278

Qatar Airways flights from St. Louis to Seoul

Our best Qatar Airways deals on St. Louis to Seoul flight tickets

Qatar Airways

Sep 24

STL6:29 amLambert-St Louis

46h 36m

2 stops

ICN7:05 pmIncheon Intl

Sep 27

ICN1:20 amIncheon Intl

31h 47m

2 stops

STL7:07 pmLambert-St Louis

$1,554

Qatar Airways

Sep 24

STL6:29 amLambert-St Louis

46h 36m

2 stops

ICN7:05 pmIncheon Intl

Sep 27

ICN1:20 amIncheon Intl

53h 20m

2 stops

STL4:40 pmLambert-St Louis

$1,556

Qatar Airways

Sep 24

STL6:29 amLambert-St Louis

46h 36m

2 stops

ICN7:05 pmIncheon Intl

Sep 27

ICN1:20 amIncheon Intl

36h 39m

2 stops

STL11:59 pmLambert-St Louis

$2,041

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Thu 9/24

6:29 am-5:30 pm

1 stop21h 01m

Incheon Intl

Mon 9/28

7:35 pm-11:59 pm

1 stop18h 24m

$1,080

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Mon 1/11

5:18 pm-1:50 pm

2 stops29h 32m

Incheon Intl

Tue 3/30

8:00 am-11:44 pm

2 stops29h 44m

$1,091

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Wed 10/14

12:10 pm-4:05 pm

2 stops37h 55m

Incheon Intl

Tue 11/17

8:10 pm-3:26 pm

1 stop34h 16m

$1,135

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Mon 10/26

4:05 pm-5:25 pm

1 stop35h 20m

Incheon Intl

Wed 11/25

8:10 pm-3:26 pm

1 stop34h 16m

$1,140

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Thu 10/22

6:47 am-4:25 pm

1 stop19h 38m

Incheon Intl

Sun 10/25

6:40 pm-12:44 am

1 stop20h 04m

$1,196

Quickest round-trip

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Thu 10/22

9:47 am-5:20 pm

1 stop17h 33m

Incheon Intl

Sun 10/25

8:35 pm-11:21 pm

1 stop16h 46m

$1,196

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Thu 10/8

5:40 am-3:45 pm

1 stop20h 05m

Incheon Intl

Wed 10/28

6:50 pm-10:00 pm

1 stop17h 10m

$1,196

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Mon 10/5

6:32 am-3:45 pm

1 stop19h 13m

Incheon Intl

Wed 11/4

6:50 pm-8:19 pm

1 stop16h 29m

$1,196

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Tue 3/9

4:17 pm-5:40 am

2 stops22h 23m

Incheon Intl

Tue 3/23

6:00 pm-9:55 pm

1 stop17h 55m

$1,201

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Mon 10/5

7:08 am-3:00 pm

1 stop17h 52m

Incheon Intl

Wed 11/4

12:45 pm-6:38 pm

2 stops20h 53m

$1,201

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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

Prices

Airlines

Layovers

What is the typical price of a round-trip flight between St. Louis and Seoul?

Prices are currently typical for flights on this route.

Typical prices usually range from $916 to $1,306.
The lowest price recently found on this route was $1,080.

What is the cheapest month to fly to Seoul?

The month of April is another great option to travel to Seoul, with average flight prices from St. Louis averaging around $908.

When to book flights from St. Louis to Seoul

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Seoul according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap St. Louis to Seoul (STL to SEL) flight deals and tips

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

Best Price Found	$510
Fastest flight time	18h 34m
Direct flights	None

The best one-way flight to Seoul from St. Louis in the past 72 hours is $510. The best round-trip flight deal from St. Louis to Seoul found on momondo in the last 72 hours is $1,080.

The fastest flight from St. Louis to Seoul takes 18h 34m

There are no direct flights from St. Louis to Seoul. There are no popular flight routes from St. Louis to Seoul.

Search flight deals

Frequently asked questions about flying from St. Louis to Seoul

How far is Lambert-St Louis to Seoul by plane?
The distance between Lambert-St Louis and Seoul is about 6661.9 mi. 18h 34m is a normal flight duration for this route.
When did momondo last update prices for flights from Lambert-St Louis Airport to Seoul?
Prices for flights from Lambert-St Louis Airport to Seoul are updated daily.
How many operators does momondo search for flights from Lambert-St Louis Airport to Seoul?
As of September 2026, there are 5 operators available to choose from for flights from Lambert-St Louis Airport to Seoul.
How old do you have to be to fly from Lambert-St Louis Airport to Seoul?
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 Lambert-St Louis Airport to Seoul.
What documentation or ID do you need to fly to Seoul?
The required travel and health documents for your Seoul trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seoul. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from St. Louis to Seoul?
Based on momondo bookings for flights between St. Louis and Seoul, the leading airline is Delta, making up 81% of the total bookings. Other popular airlines include Japan Airlines with 19%.

Best airlines flying from St. Louis to Seoul

Compare and see reviews for airlines that fly from St. Louis to Seoul with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $832	Free Cancellation	Rating 7.1 12,049 reviews	Search American Airlines flights
Delta	PriceFrom $846	Free Cancellation	Rating 7.8 8,568 reviews	Search Delta flights
United Airlines	PriceFrom $865	Free Cancellation	Rating 7.4 10,210 reviews	Search United Airlines flights
Korean Air	PriceFrom $999	Free Cancellation	Rating 8.4 1,220 reviews	Search Korean Air flights
Air Canada	PriceFrom $1,083	Free Cancellation	Rating 7.1 11,619 reviews	Search Air Canada flights

Why use momondo?

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

Finding the right flight to Seoul from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Seoul quick and easy, saving you time and money.

Can I find flights from St. Louis to Seoul with flexible booking policies on momondo?

momondo does allow users to show only those flights to Seoul from St. Louis which offer a flexible booking policy as well as other useful filters and features.

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

momondo provides multiple filters to help you find the best flight to Seoul from St. Louis. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to Seoul from St. Louis are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Fly into one of these airports located in Seoul

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Cheap flights from St. Louis to Seoul from $510

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 11/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from St. Louis to Seoul

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Alaska Airlines flights from St. Louis to Seoul

Our best Alaska Airlines deals on St. Louis to Seoul flight tickets

Qatar Airways flights from St. Louis to Seoul

Our best Qatar Airways deals on St. Louis to Seoul flight tickets

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Use the filters below to find and compare flights from St. Louis to Seoul that are best for you.

See travel insights to Seoul from

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

What is the typical price of a round-trip flight between St. Louis and Seoul?

What is the cheapest month to fly to Seoul?

What is the cheapest airline that flies from Lambert-St Louis to Seoul?

What airlines fly to Seoul?

Which airport is the most popular layover for flights between St. Louis and Seoul?

Which layover airport offers the lowest fares from St. Louis to Seoul?

Which layover airport has the shortest travel time from St. Louis to Seoul?

Which layover airport has the shortest connection time from St. Louis to Seoul?

When to book flights from St. Louis to Seoul

Cheap St. Louis to Seoul (STL to SEL) flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from St. Louis to Seoul

Best airlines flying from St. Louis to Seoul

Compare and see reviews for airlines that fly from St. Louis to Seoul with momondo

Why use momondo?

An easier way to manage your Seoul trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to South Korea

Fly into one of these airports located in Seoul

Airports listed have a maximum distance of 30.3 mi from Seoul

Fly your favorite airline to Seoul

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Seoul

List of cabin classes available on flights landing in Seoul. Availability may vary depending on flight origin and airline.

Popular cities in South Korea

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from St. Louis

According to popular flight searches on momondo this year

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