What airlines fly to Seoul?

Delta, United Airlines and Korean Air 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 72% of people opting to fly with this airline when traveling to Seoul. Keep in mind that there are 3 different airlines that fly to Seoul on a routine basis, so you have a few additional options to choose from.

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

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

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.

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

Dallas (DFW) was the most common stop: 50% 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?

Dallas (DFW) has the shortest average layover time for this route: 1h 45m.

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

Flights connecting via Dallas (DFW) have the shortest average one-way travel time: 18h 08m.

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 June 2026, there are 3 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.

$500 Cheap Flights from St. Louis to Seoul in 2026

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

Prices are currently low for flights on this route. Typical prices usually range from $1,783 to $1,314. The lowest price recently found on this route was $1,151.

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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.

1:55 pm - 6:45 pm

STL

ICN

38h 50m

2 stops

8:45 pm - 9:34 am

ICN

STL

26h 49m

2 stops

$1,151WestJet

Wed, Sep 16 - Fri, Sep 25

6:00 am - 12:25 am

STL

ICN

28h 25m

2 stops

8:00 am - 12:27 am

ICN

STL

30h 27m

2 stops

$1,183Multiple Airlines

Tue, Sep 1 - Wed, Sep 9

7:00 am - 10:30 am

STL

ICN

36h 30m

2 stops

12:20 am - 11:59 pm

ICN

STL

38h 39m

2 stops

$1,211Qatar Airways

Wed, Nov 11 - Tue, Dec 1

1:55 pm - 6:45 pm

STL

ICN

38h 50m

2 stops

8:45 pm - 9:34 am

ICN

STL

26h 49m

2 stops

$1,213WestJet

Wed, Sep 16 - Fri, Sep 25

6:30 am - 12:25 am

STL

ICN

27h 55m

2 stops

8:00 am - 11:43 pm

ICN

STL

29h 43m

2 stops

$1,233Multiple Airlines

Wed, Sep 16 - Fri, Sep 25

7:00 am - 5:15 pm

STL

ICN

43h 15m

2 stops

12:20 am - 11:59 pm

ICN

STL

38h 39m

2 stops

$1,251Qatar Airways

Fri, Nov 13 - Tue, Dec 1

12:10 pm - 4:25 pm

STL

ICN

38h 15m

1 stop

7:05 pm - 2:00 pm

ICN

STL

32h 55m

1 stop

$1,255Air Canada

Wed, Sep 23 - Wed, Oct 14

2:40 pm - 4:05 pm

STL

ICN

35h 25m

2 stops

5:55 pm - 3:30 pm

ICN

STL

35h 35m

2 stops

$1,260Air Canada

Mon, Oct 5 - Mon, Oct 26

6:00 am - 9:15 pm

STL

GMP

25h 15m

2 stops

7:15 pm - 10:59 pm

GMP

STL

41h 44m

2 stops

$1,557Japan Airlines

Wed, Aug 19 - Sun, Aug 23

9:32 am - 9:15 pm

STL

GMP

21h 43m

2 stops

12:05 pm - 11:40 pm

GMP

STL

25h 35m

2 stops

$1,580Japan Airlines

Tue, Sep 1 - Wed, Sep 9

WestJet flights from St. Louis to Seoul

Our best WestJet deals on St. Louis to Seoul flight tickets

WestJet

Sep 16

STL1:55 pmLambert-St Louis

38h 50m

2 stops

ICN6:45 pmIncheon Intl

Sep 25

ICN8:45 pmIncheon Intl

26h 49m

2 stops

STL9:34 amLambert-St Louis

$1,151

WestJet

Sep 16

STL1:55 pmLambert-St Louis

38h 50m

2 stops

ICN6:45 pmIncheon Intl

Sep 25

ICN8:45 pmIncheon Intl

26h 49m

2 stops

STL9:34 amLambert-St Louis

$1,213

WestJet

Oct 16

STL3:42 pmLambert-St Louis

37h 03m

2 stops

ICN6:45 pmIncheon Intl

Oct 25

ICN8:45 pmIncheon Intl

40h 33m

2 stops

STL11:18 pmLambert-St Louis

$1,308

Air Canada flights from St. Louis to Seoul

Our best Air Canada deals on St. Louis to Seoul flight tickets

Air Canada

Sep 23

STL12:10 pmLambert-St Louis

38h 15m

1 stop

ICN4:25 pmIncheon Intl

Oct 14

ICN7:05 pmIncheon Intl

32h 55m

1 stop

STL2:00 pmLambert-St Louis

$1,255

Air Canada

Oct 5

STL2:40 pmLambert-St Louis

35h 25m

2 stops

ICN4:05 pmIncheon Intl

Oct 26

ICN5:55 pmIncheon Intl

35h 35m

2 stops

STL3:30 pmLambert-St Louis

$1,260

Air Canada

Sep 1

STL8:55 amLambert-St Louis

18h 35m

1 stop

ICN5:30 pmIncheon Intl

Sep 9

ICN6:00 pmIncheon Intl

34h 00m

2 stops

STL2:00 pmLambert-St Louis

$1,263

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Wed 9/16

1:55 pm-6:45 pm

2 stops38h 50m

Incheon Intl

Fri 9/25

8:45 pm-9:34 am

2 stops26h 49m

$1,151

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Tue 9/1

6:00 am-12:25 am

2 stops28h 25m

Incheon Intl

Wed 9/9

8:00 am-12:27 am

2 stops30h 27m

$1,183

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Wed 11/11

7:00 am-10:30 am

2 stops36h 30m

Incheon Intl

Tue 12/1

12:20 am-11:59 pm

2 stops38h 39m

$1,211

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Wed 9/16

1:55 pm-6:45 pm

2 stops38h 50m

Incheon Intl

Fri 9/25

8:45 pm-9:34 am

2 stops26h 49m

$1,213

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Wed 9/16

6:30 am-12:25 am

2 stops27h 55m

Incheon Intl

Fri 9/25

8:00 am-11:43 pm

2 stops29h 43m

$1,233

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Fri 11/13

7:00 am-5:15 pm

2 stops43h 15m

Incheon Intl

Tue 12/1

12:20 am-11:59 pm

2 stops38h 39m

$1,251

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Wed 9/23

12:10 pm-4:25 pm

1 stop38h 15m

Incheon Intl

Wed 10/14

7:05 pm-2:00 pm

1 stop32h 55m

$1,255

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mon 10/5

2:40 pm-4:05 pm

2 stops35h 25m

Incheon Intl

Mon 10/26

5:55 pm-3:30 pm

2 stops35h 35m

$1,260

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Wed 8/19

6:00 am-9:15 pm

2 stops25h 15m

Seoul Gimpo Intl

Sun 8/23

7:15 pm-10:59 pm

2 stops41h 44m

$1,557

Quickest round-trip

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Tue 9/1

9:32 am-9:15 pm

2 stops21h 43m

Seoul Gimpo Intl

Wed 9/9

12:05 pm-11:40 pm

2 stops25h 35m

$1,580

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?

What is the cheapest month to fly to Seoul?

The month of March is another great option to travel to Seoul, with average flight prices from St. Louis averaging around $745.

Can stopping save me money on St. Louis to Seoul flights?

You could potentially save up to 44% on your flight if you consider stops on a St. Louis to Seoul flight.

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

Fastest flight time	18h 50m
Direct flights	None

The fastest flight from St. Louis to Seoul takes 18h 50m

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 50m 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 June 2026, there are 3 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 84% of the total bookings. Other popular airlines include United Airlines with 16%.

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
Delta	PriceFrom $846	Free Cancellation	Rating 7.9 8,400 reviews	Search Delta flights
United Airlines	PriceFrom $865	Free Cancellation	Rating 7.4 9,771 reviews	Search United Airlines flights
Korean Air	PriceFrom $999	Free Cancellation	Rating 8.4 1,217 reviews	Search Korean Air 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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Cheap flights from St. Louis to Seoul from $500

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 8/17. 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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WestJet flights from St. Louis to Seoul

Our best WestJet deals on St. Louis to Seoul flight tickets

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Our best Air Canada deals on St. Louis to Seoul flight tickets

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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?

Can stopping save me money on St. Louis to Seoul flights?

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

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

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

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