How long is the flight from South Korea to St. Louis?

Airlines like Delta, Korean Air, and ANA fly from South Korea to St. Louis in about 18h 53m. The time it takes to get you to your destination can typically vary by up to 12h 38m. There are 6670 mi between South Korea and St. Louis. This flight may include one or multiple stops.

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

Currently, August is the cheapest month in which you can book a flight from South Korea to St. Louis (average of $311). Flying from South Korea to St. Louis in March is currently the most expensive (average of $356). 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.

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 are the most popular routes from South Korea to St. Louis?

The most popular route from South Korea to St. Louis is Incheon Intl - Lambert-St Louis. You may also consider Busan Gimhae - Lambert-St Louis or Seoul Gimpo Intl - Lambert-St Louis.

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

Located just 12.7 mi from the city center, Lambert-St Louis (STL) is the airport most travelers will use when flying to St. Louis from South Korea.

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

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

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

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

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

Yes. Cheapflights offers flight deals from South Korea 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.

$507+ Cheap Flights from South Korea to St. Louis

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from South Korea to St. Louis with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from South Korea to St. Louis

Round-trip from	$635 (Delta)
One-way from	$507 (Kiwi.com)

From South Korea to Lambert-St Louis

Search Deals

One-way flight from South Korea to Lambert-St Louis

Search Deals

Find flight deals from South Korea to St. Louis

Cheapest flights from South Korea to St. Louis
Explore the most affordable flight options available from South Korea to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

Thu 11/208:05 pmICN - STL

2 stops19h 41mDelta

Mon 11/245:34 pmSTL - ICN

2 stops31h 56mDelta

Deal found 9/14

$635

Mon 10/137:00 amPUS - STL

2 stops31h 24mDelta

Mon 10/207:30 pmSTL - PUS

2 stops35h 15mDelta

Deal found 9/14

$819

Wed 9/1710:40 amPUS - STL

2 stops26h 29mKorean Air

Mon 11/36:00 amSTL - PUS

2 stops23h 45mKorean Air

Deal found 9/16

$823

Mon 9/156:40 pmICN - STL

1 stop18h 29mKorean Air

Tue 10/147:05 amSTL - ICN

1 stop41h 05mKorean Air

Deal found 9/13

$870

Sat 10/118:35 pmICN - STL

1 stop17h 28mHawaiian Airlines

Thu 12/255:26 pmSTL - ICN

1 stop34h 09mHawaiian Airlines

Deal found 9/16

$905

Sat 10/1112:45 pmICN - STL

2 stops23h 13mMultiple Airlines

Thu 12/257:00 amSTL - ICN

1 stop31h 20mMultiple Airlines

Deal found 9/16

$927

Mon 12/1512:00 pmPUS - STL

2 stops26h 41mKorean Air

Sun 1/186:30 amSTL - PUS

2 stops22h 05mKorean Air

Deal found 9/14

$958

Sun 10/194:30 pmPUS - STL

2 stops20h 37mKorean Air

Wed 10/296:40 amSTL - PUS

2 stops35h 30mKorean Air

Deal found 9/15

$1,012

Mon 9/154:50 pmICN - STL

2 stops19h 18mUnited Airlines

Tue 10/144:50 pmSTL - ICN

2 stops32h 10mUnited Airlines

Deal found 9/14

$1,018

Mon 9/157:20 pmICN - STL

2 stops27h 17mDelta

Tue 10/147:30 pmSTL - ICN

1 stop29h 50mDelta

Deal found 9/14

$1,021

Sat 10/1111:30 amICN - STL

2 stops37h 18mUnited Airlines

Thu 12/256:00 amSTL - ICN

2 stops32h 40mUnited Airlines

Deal found 9/16

$1,106

Sat 10/184:30 pmPUS - STL

2 stops18h 53mKorean Air

Wed 10/296:40 amSTL - PUS

2 stops35h 30mKorean Air

Deal found 9/16

$1,142

Best flights from South Korea to St. Louis
Discover carefully curated flight deals from South Korea to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 16, 2025.

Thu 11/207:30 pmICN - STL

1 stop18h 53mDelta

Mon 11/246:09 pmSTL - ICN

2 stops30h 21mDelta

Deal found 9/14

$635

Wed 10/154:30 pmPUS - STL

2 stops20h 37mKorean Air

Wed 10/228:53 amSTL - PUS

2 stops21h 52mKorean Air

Deal found 9/15

$819

Sat 10/118:35 pmICN - STL

1 stop17h 28mHawaiian Airlines

Thu 12/255:26 pmSTL - ICN

1 stop34h 09mHawaiian Airlines

Deal found 9/16

$905

Sat 10/1112:45 pmICN - STL

2 stops23h 13mMultiple Airlines

Thu 12/257:00 amSTL - ICN

1 stop31h 20mMultiple Airlines

Deal found 9/16

$927

Thu 2/1212:45 pmICN - STL

2 stops23h 15mUnited Airlines

Mon 2/162:45 pmSTL - ICN

2 stops23h 55mUnited Airlines

Deal found 9/15

$1,069

Thu 2/197:50 pmGMP - STL

2 stops31h 31mANA

Mon 2/237:41 amSTL - GMP

2 stops43h 54mANA

Deal found 9/13

$1,270

Thu 2/126:00 pmICN - STL

1 stop30h 04mDelta

Mon 2/167:30 amSTL - ICN

1 stop17h 50mDelta

Deal found 9/14

$756

Fri 2/136:00 pmICN - STL

1 stop20h 40mDelta

Mon 2/167:30 amSTL - ICN

1 stop17h 50mDelta

Deal found 9/13

$756

Mon 12/1512:00 pmPUS - STL

2 stops26h 41mKorean Air

Sun 1/186:30 amSTL - PUS

2 stops22h 05mKorean Air

Deal found 9/14

$958

Mon 10/137:00 amPUS - STL

2 stops31h 24mDelta

Mon 10/207:30 pmSTL - PUS

2 stops35h 15mDelta

Deal found 9/14

$819

Sun 10/194:30 pmPUS - STL

2 stops20h 37mKorean Air

Wed 10/296:40 amSTL - PUS

2 stops35h 30mKorean Air

Deal found 9/15

$1,012

Fri 2/1312:45 pmICN - STL

2 stops24h 15mUnited Airlines

Mon 2/162:45 pmSTL - ICN

2 stops23h 55mUnited Airlines

Deal found 9/13

$1,146

Thu 11/2012:25 pmGMP - STL

2 stops44h 14mANA

Mon 11/2411:05 amSTL - GMP

2 stops44h 25mANA

Deal found 9/14

$1,272

Sat 10/184:30 pmPUS - STL

2 stops18h 53mKorean Air

Wed 10/296:40 amSTL - PUS

2 stops35h 30mKorean Air

Deal found 9/16

$1,142

Wed 10/157:45 amPUS - STL

3 stops40h 17mMultiple Airlines

Wed 10/229:15 amSTL - PUS

2 stops22h 20mMultiple Airlines

Deal found 9/15

$1,382

Mon 10/137:15 amPUS - STL

2 stops50h 28mMultiple Airlines

Mon 10/209:15 amSTL - PUS

3 stops34h 05mMultiple Airlines

Deal found 9/14

$1,670

Thu 10/210:40 amPUS - STL

2 stops26h 29mKorean Air

Sat 10/115:25 pmSTL - PUS

2 stops24h 20mKorean Air

Deal found 9/16

$2,170

Last-minute flights from South Korea to St. Louis
Discover last-minute flight deals from South Korea to St. Louis. Data last updated September 16, 2025 and is based on user searches.

Wed 9/1710:40 amPUS - STL

2 stops26h 29mKorean Air

Mon 11/36:00 amSTL - PUS

2 stops23h 45mKorean Air

Deal found 9/16

$823

Thu 10/24:40 pmICN - STL

2 stops21h 58mDelta

Fri 10/106:00 amSTL - ICN

2 stops20h 40mDelta

Deal found 9/15

$1,766

Thu 10/25:25 pmICN - STL

2 stops29h 51mAmerican Airlines

Fri 10/107:01 amSTL - ICN

1 stop18h 29mAmerican Airlines

Deal found 9/14

$1,852

Sat 10/118:35 pmICN - STL

1 stop17h 28mHawaiian Airlines

Thu 12/255:26 pmSTL - ICN

1 stop34h 09mHawaiian Airlines

Deal found 9/16

$905

Sat 10/1112:45 pmICN - STL

2 stops23h 13mMultiple Airlines

Thu 12/257:00 amSTL - ICN

1 stop31h 20mMultiple Airlines

Deal found 9/16

$927

Sat 10/1111:30 amICN - STL

2 stops37h 18mUnited Airlines

Thu 12/256:00 amSTL - ICN

2 stops32h 40mUnited Airlines

Deal found 9/16

$1,106

Mon 10/137:00 amPUS - STL

2 stops31h 24mDelta

Mon 10/207:30 pmSTL - PUS

2 stops35h 15mDelta

Deal found 9/14

$819

Mon 10/137:15 amPUS - STL

2 stops50h 28mMultiple Airlines

Mon 10/209:15 amSTL - PUS

3 stops34h 05mMultiple Airlines

Deal found 9/14

$1,670

Wed 10/157:45 amPUS - STL

3 stops40h 17mMultiple Airlines

Wed 10/229:15 amSTL - PUS

2 stops22h 20mMultiple Airlines

Deal found 9/15

$1,382

Sat 10/184:30 pmPUS - STL

2 stops18h 53mKorean Air

Wed 10/296:40 amSTL - PUS

2 stops35h 30mKorean Air

Deal found 9/16

$1,142

Sun 10/194:30 pmPUS - STL

2 stops20h 37mKorean Air

Wed 10/296:40 amSTL - PUS

2 stops35h 30mKorean Air

Deal found 9/15

$1,012

Sun 10/194:30 pmPUS - STL

2 stops20h 37mKorean Air

Mon 10/206:52 pmSTL - PUS

2 stops22h 53mKorean Air

Deal found 9/15

$1,659

One-way flights from South Korea to St. Louis
Search for one-way flight options from South Korea to St. Louis. Find affordable one-way fares based on user searches. Data last updated September 16, 2025.

Sat 10/181:40 pmPUS - STL

3 stops33h 27mMultiple Airlines

Deal found 9/16

$507

Wed 12/1710:35 amICN - STL

2 stops43h 54mMultiple Airlines

Deal found 9/14

$552

Sun 10/198:00 amPUS - STL

2 stops30h 03mMultiple Airlines

Deal found 9/16

$564

Thu 12/189:20 pmICN - STL

2 stops34h 29mMultiple Airlines

Deal found 9/14

$666

Wed 12/177:15 pmICN - STL

1 stop18h 32mAmerican Airlines

Deal found 9/14

$693

Wed 12/1712:05 pmGMP - STL

2 stops26h 52mJapan Airlines

Deal found 9/14

$891

Thu 12/188:00 amGMP - STL

2 stops26h 31mJapan Airlines

Deal found 9/14

$903

Wed 12/178:00 amGMP - STL

2 stops19h 31mMultiple Airlines

Deal found 9/14

$909

Wed 12/1712:45 pmICN - STL

2 stops22h 03mUnited Airlines

Deal found 9/14

$924

Wed 12/176:55 pmICN - STL

2 stops35h 34mAir Canada

Deal found 9/14

$1,134

Tue 12/1612:20 amICN - STL

2 stops35h 04mQatar Airways

Deal found 9/14

$1,174

Wed 12/177:30 pmICN - STL

1 stop28h 40mDelta

Deal found 9/14

$1,460

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Thu 11/20

7:30 pm-11:23 pm

1 stop18h 53m

Lambert-St Louis

Mon 11/24

6:09 pm-3:30 pm

2 stops30h 21m

$635

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Thu 2/12

6:00 pm-9:04 am

1 stop30h 04m

Lambert-St Louis

Mon 2/16

7:30 am-4:20 pm

1 stop17h 50m

$756

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Fri 2/13

6:00 pm-11:40 pm

1 stop20h 40m

Lambert-St Louis

Mon 2/16

7:30 am-4:20 pm

1 stop17h 50m

$756

BusanSt. Louis

PUS - STL

PUSSTL

Busan Gimhae

Wed 10/15

4:30 pm-11:07 pm

2 stops20h 37m

Lambert-St Louis

Wed 10/22

8:53 am-8:45 pm

2 stops21h 52m

$819

BusanSt. Louis

PUS - STL

PUSSTL

Busan Gimhae

Mon 10/13

7:00 am-12:24 am

2 stops31h 24m

Lambert-St Louis

Mon 10/20

7:30 pm-8:45 pm

2 stops35h 15m

$819

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Sat 10/11

8:35 pm-12:03 am

1 stop17h 28m

Lambert-St Louis

Thu 12/25

5:26 pm-6:35 pm

1 stop34h 09m

$905

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Sat 10/11

12:45 pm-9:58 pm

2 stops23h 13m

Lambert-St Louis

Thu 12/25

7:00 am-5:20 am

1 stop31h 20m

$927

BusanSt. Louis

PUS - STL

PUSSTL

Busan Gimhae

Mon 12/15

12:00 pm-11:41 pm

2 stops26h 41m

Lambert-St Louis

Sun 1/18

6:30 am-7:35 pm

2 stops22h 05m

$958

BusanSt. Louis

PUS - STL

PUSSTL

Busan Gimhae

Sun 10/19

4:30 pm-11:07 pm

2 stops20h 37m

Lambert-St Louis

Wed 10/29

6:40 am-8:10 am

2 stops35h 30m

$1,012

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Thu 2/12

12:45 pm-9:00 pm

2 stops23h 15m

Lambert-St Louis

Mon 2/16

2:45 pm-5:40 am

2 stops23h 55m

$1,069

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 30 results

Best time to book a flight from South Korea to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from South Korea 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 South Korea to St. Louis

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

When flying from South Korea to St. Louis, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing St. Louis

See what other customers who have flown with Delta from South Korea to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,957 reviews

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

Delta

8.0

Very good

7,957 reviews

Delta

8.0

Very good

7,957 reviews

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

Related info for your journey

What airport do you fly into for flights to St. Louis from South Korea?
Located just 12.7 mi from the city center, Lambert-St Louis (STL) is the airport most travelers will use when flying to St. Louis from South Korea.
How long is the flight from South Korea to St. Louis?
Airlines like Delta, Korean Air, and ANA fly from South Korea to St. Louis in about 18h 53m. The time it takes to get you to your destination can typically vary by up to 12h 38m. There are 6670 mi between South Korea and St. Louis. This flight may include one or multiple stops.
What are the most popular routes from South Korea to St. Louis?
The most popular route from South Korea to St. Louis is Incheon Intl - Lambert-St Louis. You may also consider Busan Gimhae - Lambert-St Louis or Seoul Gimpo Intl - Lambert-St Louis.
Can I find deals for flights from South Korea to St. Louis that include hotel bookings?
Yes. In addition to deals on South Korea to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from South Korea to St. Louis?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from South Korea to St. Louis.
Can I find deals for business class flights from South Korea to St. Louis?
Yes. Cheapflights offers flight deals from South Korea 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 South Korea to St. Louis?
Currently, August is the cheapest month in which you can book a flight from South Korea to St. Louis (average of $311). Flying from South Korea to St. Louis in March is currently the most expensive (average of $356). 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

Edwardsville

O'Fallon

Fairview Heights

Maryland Heights

Collinsville

Eureka

Glencoe

St. Peters

Chesterfield

Alton

Farmington

Festus

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from South Korea to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$687	Average$941	FlexibilityNo cancel fee	On-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$507+ Cheap flights from South Korea 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 10/18. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from South Korea to St. Louis with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from South Korea to St. Louis

Keep the following information in mind while searching for South Korea to St. Louis flight deals. Data was last updated September 16, 2025.

Round-trip from

One-way from

Find flight deals from South Korea to St. Louis

Cheapest flights from South Korea to St. LouisExplore the most affordable flight options available from South Korea to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

Explore the most affordable flight options available from South Korea to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from South Korea to St. Louis

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

Cheapflights Insights

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

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

Find hourly flight availability from South Korea to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

Reviews of airlines servicing St. Louis

See what other customers who have flown with Delta from South Korea to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from South Korea 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 South Korea?

How long is the flight from South Korea to St. Louis?

What are the most popular routes from South Korea to St. Louis?

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

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

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

What is the cheapest month to book a flight from South Korea 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 South Korea to St. Louis

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

Top airline flying from South Korea to St. Louis

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from South Korea to St. Louis
Explore the most affordable flight options available from South Korea to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.