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$592+ Cheap flights from St. Louis (STL) to South Korea

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 4/10. Fares are subject to change and may not be available on all flights or dates of travel.
STL — ICN
Feb 27 — Mar 61
Thu 2/27
Thu 3/6
1 adult, Economy
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Cheap flight deals from St. Louis to South Korea

Keep the following information in mind while searching for St. Louis to South Korea flight deals. Data was last updated February 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,199
(Air Canada)

One-way from

$592
(Kiwi.com)

Popular in

August

Cheapest in

December

Average price

$1,280
Provider with most accurate pricing for Lambert-St Louis-Seoul (SEL) flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Seoul (SEL) flights.
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From Lambert-St Louis to South Korea
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One-way flight from Lambert-St Louis to South Korea
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Highest demand for flights based on searches. 8% potential increase in price ($115 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($33 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from St. Louis to South Korea

Cheapest flights from St. Louis to South Korea
Explore the most affordable flight options available from St. Louis to South Korea. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 22, 2025.

This Air Canada deal was found by Cheapflights users on 2/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/83:30 pmSTL - ICN
1 stop36h 00mAir Canada
Tue 4/157:05 pmICN - STL
1 stop33h 44mAir Canada
Deal found 2/22$1,199
This Turkish Airlines deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/85:33 pmSTL - ICN
2 stops24h 32mMultiple Airlines
Fri 3/1412:10 amICN - STL
2 stops29h 21mMultiple Airlines
Deal found 2/21$1,366
This Gurufare deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/257:30 amSTL - GMP
2 stops24h 20mJapan Airlines
Thu 10/307:50 amGMP - STL
2 stops22h 18mJapan Airlines
Deal found 2/21$1,496
This oojo deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/66:15 amSTL - ICN
2 stops40h 40mCathay Pacific
Sat 3/157:35 pmICN - STL
2 stops41h 34mCathay Pacific
Deal found 2/21$1,518
This United Airlines deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/87:05 amSTL - ICN
1 stop18h 10mUnited Airlines
Thu 1/812:45 pmICN - STL
1 stop20h 18mUnited Airlines
Deal found 2/21$1,672
This Mytrip deal was found by Cheapflights users on 2/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/86:44 amSTL - GMP
2 stops25h 06mMultiple Airlines
Tue 4/1512:05 pmGMP - STL
3 stops25h 54mMultiple Airlines
Deal found 2/22$1,798
This American Airlines deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/76:32 pmSTL - ICN
2 stops30h 58mAmerican Airlines
Sun 3/165:50 pmICN - STL
1 stop28h 58mAmerican Airlines
Deal found 2/21$1,833
This oojo deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/111:39 amSTL - ICN
2 stops39h 26mQatar Airways
Fri 4/111:20 amICN - STL
2 stops36h 39mQatar Airways
Deal found 2/21$1,894
This Ovago deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/206:30 amSTL - ICN
2 stops22h 15mWestJet
Sun 9/218:45 pmICN - STL
2 stops34h 02mWestJet
Deal found 2/21$1,902
This KAYAK deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/181:27 pmSTL - GMP
2 stops31h 38mANA
Mon 10/277:50 pmGMP - STL
2 stops30h 30mANA
Deal found 2/21$2,158
This Delta deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/65:40 pmSTL - ICN
1 stop20h 20mDelta
Sat 6/217:40 pmICN - STL
1 stop18h 58mDelta
Deal found 2/20$3,072

Find flights from St. Louis to South Korea within your budget

Customize your flight search to find flights from St. Louis to South Korea that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 22, 2025.

Fly from

St. Louis

Fly to

South Korea

Route

Depart

Return

Price

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Tue 4/8

3:30 pm-5:30 pm

1 stop36h 00m

Incheon Intl

Tue 4/15

7:05 pm-2:49 pm

1 stop33h 44m

$1,199

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Sat 3/8

5:33 pm-9:05 am

2 stops24h 32m

Incheon Intl

Fri 3/14

12:10 am-3:31 pm

2 stops29h 21m

$1,366

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Thu 3/6

6:15 am-1:55 pm

2 stops40h 40m

Incheon Intl

Sat 3/15

7:35 pm-11:09 pm

2 stops41h 34m

$1,518

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Tue 4/8

6:15 am-6:00 pm

2 stops21h 45m

Seoul Gimpo Intl

Tue 4/22

7:55 am-11:16 pm

2 stops29h 21m

$1,624

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Thu 5/15

7:00 am-3:00 pm

1 stop18h 00m

Incheon Intl

Thu 6/5

11:30 am-6:00 pm

1 stop20h 30m

$1,786

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Tue 4/8

6:44 am-9:50 pm

2 stops25h 06m

Seoul Gimpo Intl

Tue 4/15

12:05 pm-11:59 pm

3 stops25h 54m

$1,798

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Fri 3/7

6:32 pm-4:30 pm

2 stops30h 58m

Incheon Intl

Sun 3/16

5:50 pm-8:48 am

1 stop28h 58m

$1,833

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Tue 4/1

11:39 am-5:05 pm

2 stops39h 26m

Incheon Intl

Fri 4/11

1:20 am-11:59 pm

2 stops36h 39m

$1,894

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Thu 4/10

9:50 am-6:45 pm

3 stops42h 55m

$592

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Thu 4/10

3:30 pm-5:30 pm

1 stop36h 00m

$719

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

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

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

Travel insights for flights from St. Louis to South Korea

Get recent, data-driven insights about flights from St. Louis to South Korea including ideal travel times, pricing trends, and more.

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

Currently, February is the cheapest month in which you can book a flight from St. Louis to South Korea (average of $1,036). Flying from St. Louis to South Korea in June is currently the most expensive (average of $1,697). 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.

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

Find hourly flight availability from St. Louis to South Korea. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 22, 2025.

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

Rainfall in South Korea by month

Plan your trip to South Korea by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in South Korea ranges from 0.8 - 10.2 inches per month. July is typically the wettest month, when rainfall can reach 10.2 in. January is typically the driest time to visit South Korea when rainfall is around 0.8 in.

Temperature in South Korea by month

Plan your trip to South Korea by taking into account the average temperature totals by month.

If weather is an important factor for your trip to South Korea, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 28.4 F).

Reviews of airlines servicing South Korea

Get insights into the airlines that provide service to South Korea. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to South Korea. Reviews last updated February 22, 2025.
Japan Airlines
8.3
Very good
1,440 reviews

Comfort

8.2

Boarding

8.4

Food

7.7

Crew

8.7

Entertainment

7.8

Overall

8.3

Reviews

1 / 20

10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.

Japan Airlines
8.3
Very good
1,440 reviews
Japan Airlines
8.3
Very good
1,440 reviews

Comfort

8.2

Boarding

8.4

Food

7.7

Crew

8.7

Entertainment

7.8

Overall

8.3

Reviews

1 / 20

10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.

Cathay Pacific
7.5
Good
821 reviews
Japan Airlines
8.3
Very good
1,440 reviews

Comfort

8.2

Boarding

8.4

Food

7.7

Crew

8.7

Entertainment

7.8

Overall

8.3

Reviews

1 / 20

10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.

Qatar Airways
7.4
Good
3,612 reviews
Japan Airlines
8.3
Very good
1,440 reviews

Comfort

8.2

Boarding

8.4

Food

7.7

Crew

8.7

Entertainment

7.8

Overall

8.3

Reviews

1 / 20

10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.

United Airlines
7.4
Good
8,754 reviews
Japan Airlines
8.3
Very good
1,440 reviews

Comfort

8.2

Boarding

8.4

Food

7.7

Crew

8.7

Entertainment

7.8

Overall

8.3

Reviews

1 / 20

10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.

American Airlines
7.2
Good
10,000 reviews
Japan Airlines
8.3
Very good
1,440 reviews

Comfort

8.2

Boarding

8.4

Food

7.7

Crew

8.7

Entertainment

7.8

Overall

8.3

Reviews

1 / 20

10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to South Korea. 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 from for flights from St. Louis to South Korea?

    If you book a flight to South Korea from St. Louis, you will be flying from 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.

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

    When deciding which route to take from St. Louis to South Korea consider Lambert-St Louis - Incheon Intl, Lambert-St Louis - Seoul Gimpo Intl or Lambert-St Louis - Jeju City as they are the most popular.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to South Korea 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 St. Louis to South Korea?

    Currently, February is the cheapest month in which you can book a flight from St. Louis to South Korea (average of $1,036). Flying from St. Louis to South Korea in June is currently the most expensive (average of $1,697). 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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Alternative routes for St. Louis to South Korea

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from St. Louis to South Korea

Discover the top 6 airlines that operate flights from St. Louis to South Korea. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$799Average$1,030FlexibilityNo cancel feeOn-time67%
DeltaCheapest$902Average$1,683FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$902Average$1,112FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$996Average$1,518FlexibilityNo cancel feeOn-time71%
Korean AirCheapest$1,080Average$1,882FlexibilityNo cancel feeOn-time81%
Japan AirlinesCheapest$1,269Average$1,488FlexibilityNo cancel feeOn-time79%
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