How long is the flight from Seoul to St. Louis?

American Airlines and Japan Airlines can get you from Seoul to St. Louis in just under 19h 04m. Your travel time can differ by up to 47m. The distance between Seoul and St. Louis is about 6670 mi. This flight may include one or multiple stops.

What are the cheapest airlines flying from Seoul to St. Louis round-trip?

Currently priced at $568, American Airlines will fly you from Seoul to St. Louis and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Delta for as low as $630.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

What is the cheapest time of day to fly from SEL to STL?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seoul to St. Louis as you normally would.

Most accurate provider : When it comes to deals on Seoul-St. Louis flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seoul-St. Louis flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Seoul-St. Louis flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Seoul-St. Louis flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seoul-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly into for flights to St. Louis from Seoul?

If you book a flight to St. Louis from Seoul, you will be flying to Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis. There are 0 flights from Seoul to Lambert-St Louis per day from 2 different airlines.

Can I find deals for flights from Seoul to St. Louis that include hotel bookings?

Yes. In addition to deals on Seoul to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Seoul to St. Louis?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seoul to St. Louis.

Can I find deals for business class flights from Seoul to St. Louis?

Yes. Cheapflights offers flight deals from Seoul to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$538+ Flights from Seoul to St. Louis

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Cheap flight deals from Seoul to St. Louis

Cheapest flights from Seoul to St. Louis
Explore the most affordable flight options available from Seoul to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

Thu 12/2512:45 pmICN - STL

1 stop18h 59mUnited Airlines

Mon 1/55:45 pmSTL - ICN

2 stops31h 30mUnited Airlines

Deal found 12/17

$661

Thu 12/259:00 pmICN - STL

1 stop17h 59mMultiple Airlines

Mon 1/55:26 pmSTL - ICN

1 stop20h 54mMultiple Airlines

Deal found 12/17

$698

Thu 12/2512:05 pmGMP - STL

2 stops22h 34mJapan Airlines

Mon 1/56:20 amSTL - GMP

2 stops24h 45mJapan Airlines

Deal found 12/17

$1,568

Best flights from Seoul to St. Louis
Discover carefully curated flight deals from Seoul to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.

Thu 4/95:25 pmICN - STL

1 stop19h 04mAmerican Airlines

Mon 4/205:34 amSTL - ICN

1 stop19h 56mAmerican Airlines

Deal found 12/17

$629

Mon 4/134:50 pmICN - STL

2 stops30h 38mUnited Airlines

Tue 4/217:06 pmSTL - ICN

1 stop19h 14mUnited Airlines

Deal found 12/18

$674

Fri 1/309:00 pmICN - STL

1 stop16h 46mMultiple Airlines

Fri 2/62:50 pmSTL - ICN

1 stop23h 30mMultiple Airlines

Deal found 12/15

$683

Wed 4/17:55 amGMP - STL

2 stops19h 51mJapan Airlines

Sun 4/56:38 amSTL - GMP

2 stops49h 12mJapan Airlines

Deal found 12/16

$1,262

Tue 4/145:25 pmICN - STL

2 stops28h 40mAmerican Airlines

Tue 4/217:20 amSTL - ICN

1 stop18h 10mAmerican Airlines

Deal found 12/17

$632

Mon 4/138:40 pmICN - STL

1 stop23h 12mMultiple Airlines

Tue 4/212:55 pmSTL - ICN

1 stop23h 25mMultiple Airlines

Deal found 12/18

$697

Fri 4/105:25 pmICN - STL

1 stop29h 30mAmerican Airlines

Mon 4/205:34 amSTL - ICN

1 stop19h 56mAmerican Airlines

Deal found 12/16

$634

Mon 4/139:00 pmICN - STL

1 stop31h 11mMultiple Airlines

Sun 4/197:00 amSTL - ICN

1 stop31h 20mMultiple Airlines

Deal found 12/16

$697

Mon 4/135:25 pmICN - STL

1 stop29h 30mAmerican Airlines

Sun 4/196:00 pmSTL - ICN

1 stop31h 30mAmerican Airlines

Deal found 12/17

$640

Sat 4/117:20 pmGMP - STL

2 stops41h 56mJapan Airlines

Tue 4/217:20 amSTL - GMP

2 stops20h 40mJapan Airlines

Deal found 12/16

$1,375

Fri 1/308:00 amGMP - STL

2 stops21h 47mMultiple Airlines

Fri 2/67:04 amSTL - GMP

2 stops24h 01mMultiple Airlines

Deal found 12/15

$1,490

Sat 4/117:55 amGMP - STL

2 stops22h 16mMultiple Airlines

Tue 4/217:20 amSTL - GMP

2 stops24h 30mMultiple Airlines

Deal found 12/18

$1,531

Last-minute flights from Seoul to St. Louis
Discover last-minute flight deals from Seoul to St. Louis. Data last updated December 18, 2025 and is based on user searches.

Thu 12/2512:45 pmICN - STL

2 stops23h 58mUnited Airlines

Mon 1/55:45 pmSTL - ICN

2 stops31h 30mUnited Airlines

Deal found 12/17

$661

Thu 12/259:00 pmICN - STL

1 stop17h 59mMultiple Airlines

Mon 1/55:26 pmSTL - ICN

1 stop20h 54mMultiple Airlines

Deal found 12/17

$698

Thu 12/2512:05 pmGMP - STL

2 stops22h 34mJapan Airlines

Mon 1/56:20 amSTL - GMP

2 stops24h 45mJapan Airlines

Deal found 12/17

$1,568

Fri 1/309:00 pmICN - STL

1 stop16h 46mMultiple Airlines

Fri 2/62:50 pmSTL - ICN

1 stop23h 30mMultiple Airlines

Deal found 12/15

$683

Fri 1/3012:45 pmICN - STL

2 stops24h 15mUnited Airlines

Fri 2/66:45 amSTL - ICN

1 stop31h 55mUnited Airlines

Deal found 12/15

$782

Fri 1/308:00 amGMP - STL

2 stops21h 47mMultiple Airlines

Fri 2/67:04 amSTL - GMP

2 stops24h 01mMultiple Airlines

Deal found 12/15

$1,490

Sat 1/3112:45 pmICN - STL

2 stops23h 13mUnited Airlines

Tue 2/39:57 amSTL - ICN

2 stops28h 43mUnited Airlines

Deal found 12/17

$710

One-way flights from Seoul to St. Louis
Search for one-way flight options from Seoul to St. Louis. Find affordable one-way fares based on user searches. Data last updated December 18, 2025.

Tue 3/175:55 pmICN - STL

1 stop29h 00mAmerican Airlines

Deal found 12/17

$538

Mon 3/165:55 pmICN - STL

2 stops33h 21mAmerican Airlines

Deal found 12/17

$541

Sun 3/225:55 pmICN - STL

1 stop37h 18mAmerican Airlines

Deal found 12/17

$589

Thu 3/195:55 pmICN - STL

2 stops19h 04mAir Canada

Deal found 12/17

$704

Fri 3/205:55 pmICN - STL

2 stops35h 34mAir Canada

Deal found 12/17

$786

Wed 3/1812:05 pmGMP - STL

2 stops25h 51mJapan Airlines

Deal found 12/17

$866

Thu 3/1911:45 amICN - STL

1 stop24h 40mUnited Airlines

Deal found 12/17

$898

Mon 3/167:30 pmICN - STL

1 stop17h 45mKorean Air

Deal found 12/17

$911

Wed 3/181:15 pmICN - STL

2 stops24h 41mJapan Airlines

Deal found 12/17

$929

Sun 3/227:30 pmICN - STL

1 stop27h 20mDelta

Deal found 12/17

$943

Thu 3/198:00 amGMP - STL

2 stops24h 03mJapan Airlines

Deal found 12/17

$1,046

Find flight deals from Seoul to St. Louis

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$629 (American Airlines)
One-way from	$538 (American Airlines)

Provider with most accurate pricing for Seoul (SEL)-Lambert-St Louis flight deals.

Search Deals

Provider most trusted by Cheapflights users for Seoul (SEL)-Lambert-St Louis flights.

Search Deals

From Seoul (SEL) to Lambert-St Louis

Search Deals

One-way flight from Seoul (SEL) to Lambert-St Louis

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Thu 4/9

5:25 pm-10:29 pm

1 stop19h 04m

Lambert-St Louis

Mon 4/20

5:34 am-3:30 pm

1 stop19h 56m

$629

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Tue 4/14

5:25 pm-8:05 am

2 stops28h 40m

Lambert-St Louis

Tue 4/21

7:20 am-3:30 pm

1 stop18h 10m

$632

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Fri 4/10

5:25 pm-8:55 am

1 stop29h 30m

Lambert-St Louis

Mon 4/20

5:34 am-3:30 pm

1 stop19h 56m

$634

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 4/13

5:25 pm-8:55 am

1 stop29h 30m

Lambert-St Louis

Sun 4/19

6:00 pm-3:30 pm

1 stop31h 30m

$640

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 4/13

4:50 pm-9:28 am

2 stops30h 38m

Lambert-St Louis

Tue 4/21

7:06 pm-4:20 am

1 stop19h 14m

$674

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Fri 1/30

9:00 pm-10:46 pm

1 stop16h 46m

Lambert-St Louis

Fri 2/6

2:50 pm-5:20 am

1 stop23h 30m

$683

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 4/13

8:40 pm-5:52 am

1 stop23h 12m

Lambert-St Louis

Tue 4/21

2:55 pm-4:20 am

1 stop23h 25m

$697

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 4/13

9:00 pm-2:11 pm

1 stop31h 11m

Lambert-St Louis

Sun 4/19

7:00 am-4:20 am

1 stop31h 20m

$697

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Wed 4/1

7:55 am-1:46 pm

2 stops19h 51m

Lambert-St Louis

Sun 4/5

6:38 am-9:50 pm

2 stops49h 12m

$1,262

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Sat 4/11

7:20 pm-11:16 pm

2 stops41h 56m

Lambert-St Louis

Tue 4/21

7:20 am-6:00 pm

2 stops20h 40m

$1,375

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 26 results

Compare providers for flights from Seoul to St. Louis

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seoul to St. Louis in December.

Provider	Price Accuracy	Trust Score*
eDreams	Price Accuracy3 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
AranGrant	Price Accuracy2 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Seoul-St. Louis flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seoul-St. Louis flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Seoul-St. Louis flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Seoul-St. Louis flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seoul-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seoul to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Seoul with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seoul to St. Louis

What is the cheapest month to book a flight from Seoul to St. Louis?

Currently, November is the cheapest month in which you can book a flight from Seoul to St. Louis (average of $568). Flying from Seoul to St. Louis in January is currently the most expensive (average of $1,248). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing St. Louis

Read through reviews of airlines operating flights from Seoul to St. Louis, such as Delta and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

7.9

Good

8,005 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Delta

7.9

Good

8,005 reviews

Delta

7.9

Good

8,005 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

American Airlines

7.2

Good

11,054 reviews

Delta

7.9

Good

8,005 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

Related info for your journey

What airport do you fly into for flights to St. Louis from Seoul?
If you book a flight to St. Louis from Seoul, you will be flying to Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis. There are 0 flights from Seoul to Lambert-St Louis per day from 2 different airlines.
How long is the flight from Seoul to St. Louis?
American Airlines and Japan Airlines can get you from Seoul to St. Louis in just under 19h 04m. Your travel time can differ by up to 47m. The distance between Seoul and St. Louis is about 6670 mi. This flight may include one or multiple stops.
What are the cheapest airlines flying from Seoul to St. Louis round-trip?
Currently priced at $568, American Airlines will fly you from Seoul to St. Louis and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Delta for as low as $630.
Can I find deals for flights from Seoul to St. Louis that include hotel bookings?
Yes. In addition to deals on Seoul to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Seoul to St. Louis?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seoul to St. Louis.
Can I find deals for business class flights from Seoul to St. Louis?
Yes. Cheapflights offers flight deals from Seoul to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Seoul to St. Louis?
Currently, November is the cheapest month in which you can book a flight from Seoul to St. Louis (average of $568). Flying from Seoul to St. Louis in January is currently the most expensive (average of $1,248). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Other flights to St. Louis

Top 2 airlines flying from Seoul to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$568	Average$1,621	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$630	Average$926	FlexibilityNo cancel fee	On-timeN/A

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$538+ Cheap flights from Seoul (SEL) to St. Louis (STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/17. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Seoul to St. Louis with Cheapflights

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Cheap flight deals from Seoul to St. Louis

Cheapest flights from Seoul to St. LouisExplore the most affordable flight options available from Seoul to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

Explore the most affordable flight options available from Seoul to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

Find flight deals from Seoul to St. Louis

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Cheapflights Fare Finder

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

Compare providers for flights from Seoul to St. Louis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seoul to St. Louis in December.

Best time to book a flight from Seoul to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Seoul with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Seoul to St. Louis

What is the cheapest month to book a flight from Seoul to St. Louis?

Reviews of airlines servicing St. Louis

Read through reviews of airlines operating flights from Seoul to St. Louis, such as Delta and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Seoul to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to St. Louis from Seoul?

How long is the flight from Seoul to St. Louis?

What are the cheapest airlines flying from Seoul to St. Louis round-trip?

Can I find deals for flights from Seoul to St. Louis that include hotel bookings?

How can I find direct flights from Seoul to St. Louis?

Can I find deals for business class flights from Seoul to St. Louis?

What is the cheapest month to book a flight from Seoul to St. Louis?

Traveling to a place near St. Louis?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seoul to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from Seoul to St. Louis

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Cheapest flights from Seoul to St. Louis
Explore the most affordable flight options available from Seoul to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.