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

Delta, United Airlines, and Air Canada are the most popular carriers operating from Lambert-St Louis to Incheon Intl

What airlines fly to Incheon Intl Airport?

Delta, United Airlines and Air Canada are the top three most popular airlines that fly to Incheon Intl Airport from St. Louis according to our data. Delta is the first choice among our users, with 57% of people opting to fly with this airline when traveling to Incheon Intl Airport. Keep in mind that there are 4 different airlines that fly to Incheon Intl Airport on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Lambert-St Louis Airport to Incheon Intl Airport are refreshed on a daily basis.

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

The number of operators available for flights from Lambert-St Louis Airport to Incheon Intl Airport is 4 as of March 2026.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Incheon Intl Airport.

What documentation or ID do you need to fly to Incheon Intl Airport?

The travel and health documents required for your trip to Incheon Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Incheon Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$518 Cheap Flights from St. Louis to Incheon Intl Airport in 2026

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

Prices are currently typical for flights on this route. Typical prices usually range from $924 to $1,224. The lowest price recently found on this route was $998.

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Find the cheapest flights from St. Louis to Seoul

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Enter your travel dates to find the best prices.

4:05 pm - 5:30 pm

STL

ICN

35h 25m

1 stop

5:45 pm - 12:06 pm

ICN

STL

32h 21m

2 stops

$998Air Canada

пн., апр 6 - вт., май 12

4:05 pm - 5:30 pm

STL

ICN

35h 25m

1 stop

7:05 pm - 12:06 pm

ICN

STL

31h 01m

1 stop

$1,035Air Canada

пн., апр 6 - вт., май 12

9:16 am - 4:20 am

STL

ICN

29h 04m

2 stops

4:50 pm - 10:45 am

ICN

STL

31h 55m

2 stops

$1,063United Airlines

сб., апр 4 - пт., апр 17

6:48 am - 4:25 pm

STL

ICN

19h 37m

1 stop

7:20 pm - 12:25 am

ICN

STL

19h 05m

1 stop

$1,066Delta

ср., апр 15 - ср., апр 22

7:00 am - 4:50 pm

STL

ICN

19h 50m

2 stops

7:20 pm - 12:25 am

ICN

STL

19h 05m

1 stop

$1,071Delta

ср., апр 15 - ср., апр 22

5:29 pm - 5:20 pm

STL

ICN

33h 51m

1 stop

7:20 pm - 12:21 am

ICN

STL

19h 01m

1 stop

$1,072Delta

сб., апр 4 - вт., апр 7

6:11 pm - 3:45 pm

STL

ICN

31h 34m

1 stop

5:50 pm - 10:59 pm

ICN

STL

19h 09m

1 stop

$1,073American Airlines

сб., май 2 - вт., май 12

4:05 pm - 5:30 pm

STL

ICN

35h 25m

1 stop

5:45 pm - 12:06 pm

ICN

STL

32h 21m

2 stops

$1,075Air Canada

пн., апр 6 - пн., май 11

7:00 am - 4:50 pm

STL

ICN

19h 50m

2 stops

7:20 pm - 1:23 pm

ICN

STL

32h 03m

1 stop

$1,076Delta

пн., апр 20 - пн., апр 27

6:11 pm - 3:45 pm

STL

ICN

31h 34m

1 stop

5:50 pm - 11:56 pm

ICN

STL

20h 06m

2 stops

$1,077American Airlines

сб., май 2 - вт., май 12

Alaska Airlines flights from St. Louis to Incheon Intl Airport

Our best Alaska Airlines deals on St. Louis to Incheon Intl Airport flight tickets

Alaska Airlines

Jul 27

STL6:00 amLambert-St Louis

21h 30m

1 stop

ICN5:30 pmIncheon Intl

Aug 16

ICN7:35 pmIncheon Intl

32h 20m

1 stop

STL1:55 pmLambert-St Louis

$1,181

Alaska Airlines

Jul 26

STL7:56 pmLambert-St Louis

31h 34m

1 stop

ICN5:30 pmIncheon Intl

Aug 16

ICN7:35 pmIncheon Intl

32h 20m

1 stop

STL1:55 pmLambert-St Louis

$1,191

Air Canada flights from St. Louis to Incheon Intl Airport

Our best Air Canada deals on St. Louis to Incheon Intl Airport flight tickets

Air Canada

Apr 6

STL4:05 pmLambert-St Louis

35h 25m

1 stop

ICN5:30 pmIncheon Intl

May 12

ICN5:45 pmIncheon Intl

32h 21m

2 stops

STL12:06 pmLambert-St Louis

$998

Air Canada

Apr 6

STL4:05 pmLambert-St Louis

35h 25m

1 stop

ICN5:30 pmIncheon Intl

May 12

ICN7:05 pmIncheon Intl

31h 01m

1 stop

STL12:06 pmLambert-St Louis

$1,035

Air Canada

Apr 6

STL4:05 pmLambert-St Louis

35h 25m

1 stop

ICN5:30 pmIncheon Intl

May 11

ICN5:45 pmIncheon Intl

32h 21m

2 stops

STL12:06 pmLambert-St Louis

$1,075

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

пн. 4/6

4:05 pm-5:30 pm

1 stop35h 25m

Incheon Intl

вт. 5/12

5:45 pm-12:06 pm

2 stops32h 21m

$998

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

пн. 4/6

4:05 pm-5:30 pm

1 stop35h 25m

Incheon Intl

вт. 5/12

7:05 pm-12:06 pm

1 stop31h 01m

$1,035

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

сб. 4/4

9:16 am-4:20 am

2 stops29h 04m

Incheon Intl

пт. 4/17

4:50 pm-10:45 am

2 stops31h 55m

$1,063

Quickest round-trip

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

ср. 4/15

6:48 am-4:25 pm

1 stop19h 37m

Incheon Intl

ср. 4/22

7:20 pm-12:25 am

1 stop19h 05m

$1,066

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

ср. 4/15

7:00 am-4:50 pm

2 stops19h 50m

Incheon Intl

ср. 4/22

7:20 pm-12:25 am

1 stop19h 05m

$1,071

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

сб. 4/4

5:29 pm-5:20 pm

1 stop33h 51m

Incheon Intl

вт. 4/7

7:20 pm-12:21 am

1 stop19h 01m

$1,072

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

сб. 5/2

6:11 pm-3:45 pm

1 stop31h 34m

Incheon Intl

вт. 5/12

5:50 pm-10:59 pm

1 stop19h 09m

$1,073

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

пн. 4/6

4:05 pm-5:30 pm

1 stop35h 25m

Incheon Intl

пн. 5/11

5:45 pm-12:06 pm

2 stops32h 21m

$1,075

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

пн. 4/20

7:00 am-4:50 pm

2 stops19h 50m

Incheon Intl

пн. 4/27

7:20 pm-1:23 pm

1 stop32h 03m

$1,076

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

сб. 5/2

6:11 pm-3:45 pm

1 stop31h 34m

Incheon Intl

вт. 5/12

5:50 pm-11:56 pm

2 stops20h 06m

$1,077

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 Incheon 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

Prices

Airlines

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

What is the cheapest month to fly to Incheon Intl Airport?

The cheapest month to fly to Incheon Intl Airport from St. Louis is in December. Flight prices, which tend to average around $846, are often lower during this time because this is during the off-season. If you are unable to visit Incheon Intl Airport during the month of December, then departing from St. Louis during the month February is also very affordable. Most momondo users find prices during this month for around $865.

How far in advance should I book a flight to Incheon Intl Airport?

You are more likely to see cheaper flights to Incheon Intl Airport from St. Louis when booking week ahead of your departure date. In general, you can expect to find flights to Incheon Intl Airport for around $1,153 when searching week out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Incheon Intl Airport from St. Louis for as low as $936 on momondo.

When to book flights from St. Louis to Incheon Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Incheon 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 Incheon Intl Airport (STL to ICN) flight deals and tips

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

Fastest flight time	19h 37m
Direct flights	None

The fastest flight from St. Louis to Incheon Intl Airport takes 19h 37m

There are no direct flights from St. Louis to Incheon Intl Airport. There are no popular flight routes from St. Louis to Incheon Intl Airport.

Search flight deals

How far is Lambert-St Louis to Incheon Intl by plane?
The straight-line distance from Lambert-St Louis to Incheon Intl is 6682.0 mi. By plane, this route typically takes 19h 37m.
When did momondo last update prices for flights from Lambert-St Louis Airport to Incheon Intl Airport?
Prices for flights from Lambert-St Louis Airport to Incheon Intl Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Lambert-St Louis Airport to Incheon Intl Airport?
The number of operators available for flights from Lambert-St Louis Airport to Incheon Intl Airport is 4 as of March 2026.
How old do you have to be to fly from Lambert-St Louis Airport to Incheon Intl Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Incheon Intl Airport.
What documentation or ID do you need to fly to Incheon Intl Airport?
The travel and health documents required for your trip to Incheon Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Incheon Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from St. Louis to Incheon Intl Airport?
momondo data reveals that the most frequently booked airline on the route from St. Louis to Incheon Intl Airport is Delta, representing 57% of all bookings. The subsequent popular airlines are United Airlines at 16%, Air Canada at 14%, and American Airlines at 12%.

Best airlines flying from St. Louis to Incheon Intl Airport

Compare and see reviews for airlines that fly from St. Louis to Incheon Intl Airport with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $846	Free Cancellation	Rating 7.1 11,492 reviews	Search American Airlines flights
Delta	PriceFrom $846	Free Cancellation	Rating 7.9 8,322 reviews	Search Delta flights
United Airlines	PriceFrom $865	Free Cancellation	Rating 7.4 9,469 reviews	Search United Airlines flights
Air Canada	PriceFrom $1,083	Free Cancellation	Rating 7.1 10,836 reviews	Search Air Canada flights

Suwon

Daejeon

Seongnam

Anyang

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

Yes. momondo allows you to filter the results for St. Louis to Seoul flights to just show those with flexible booking policies.

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

Once you have performed a search for St. Louis to Seoul flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are not ready to book a flight from St. Louis to Seoul now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Seoul and let you know when they change.

An easier way to manage your Incheon Intl Airport trip

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Flights to Seoul Gimpo Intl Airportfrom $748

Cheap flights from St. Louis to Seoul from $483

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 4/7. 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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Alaska Airlines flights from St. Louis to Incheon Intl Airport

Our best Alaska Airlines deals on St. Louis to Incheon Intl Airport flight tickets

Air Canada flights from St. Louis to Incheon Intl Airport

Our best Air Canada deals on St. Louis to Incheon Intl Airport flight tickets

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How to get the cheapest flight ticket from St. Louis to Incheon Intl Airport

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

What is the cheapest month to fly to Incheon Intl Airport?

How far in advance should I book a flight to Incheon Intl Airport?

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

What airlines fly to Incheon Intl Airport?

When to book flights from St. Louis to Incheon Intl Airport

Cheap St. Louis to Incheon Intl Airport (STL to ICN) flight deals and tips

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

Fastest flight time

Direct flights

Best airlines flying from St. Louis to Incheon Intl Airport

Compare and see reviews for airlines that fly from St. Louis to Incheon Intl Airport with momondo

Traveling to a place near Seoul?

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An easier way to manage your Incheon Intl Airport trip

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According to popular flight searches on momondo this year

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

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