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$712+ 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 4/3. Fares are subject to change and may not be available on all flights or dates of travel.
STL — ICN
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
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 March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,258
(EVA Air)

One-way from

$712
(Kiwi.com)

Popular in

July

Cheapest in

December

Average price

$1,236
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
Search Deals
One-way flight from Lambert-St Louis to South Korea
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($230 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($39 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 28, 2025.

This Priceline deal was found by Cheapflights users on 3/27. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/251:30 pmSTL - ICN
2 stops36h 35mAir Canada
Thu 10/305:50 pmICN - STL
2 stops35h 36mAir Canada
Deal found 3/27$1,249
This EVA Air deal was found by Cheapflights users on 3/27. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/13:17 pmSTL - ICN
2 stops29h 43mMultiple Airlines
Thu 9/1112:00 pmICN - STL
2 stops40h 17mMultiple Airlines
Deal found 3/27$1,258
This WestJet deal was found by Cheapflights users on 3/26. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/186:00 amSTL - ICN
2 stops46h 45mWestJet
Sat 5/248:45 pmICN - STL
2 stops40h 41mWestJet
Deal found 3/26$1,317
This Fareboom deal was found by Cheapflights users on 3/27. 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 Fareboom is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/133:17 pmSTL - ICN
2 stops29h 43mEVA Air
Sat 9/277:45 pmICN - STL
2 stops32h 32mEVA Air
Deal found 3/27$1,425
This Expedia deal was found by Cheapflights users on 3/26. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/306:44 amSTL - PUS
2 stops38h 31mMultiple Airlines
Tue 4/18:00 pmPUS - STL
2 stops41h 59mMultiple Airlines
Deal found 3/26$1,478
This oojo deal was found by Cheapflights users on 3/27. 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.
Mon 9/19:50 amSTL - ICN
2 stops41h 15mQatar Airways
Wed 9/101:20 amICN - STL
2 stops35h 07mQatar Airways
Deal found 3/27$1,557
This oojo deal was found by Cheapflights users on 3/27. 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.
Fri 4/410:17 amSTL - ICN
2 stops36h 23mCathay Pacific
Thu 4/173:10 pmICN - STL
2 stops46h 06mCathay Pacific
Deal found 3/27$1,568
This KAYAK deal was found by Cheapflights users on 3/27. 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.
Thu 9/257:00 amSTL - GMP
2 stops24h 50mJapan Airlines
Thu 10/307:50 amGMP - STL
2 stops19h 09mJapan Airlines
Deal found 3/27$1,591
This United deal was found by Cheapflights users on 3/27. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/245:54 pmSTL - ICN
1 stop20h 26mUnited Airlines
Sat 5/3111:30 amICN - STL
1 stop20h 30mUnited Airlines
Deal found 3/27$1,660
This American Airlines deal was found by Cheapflights users on 3/27. 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.
Mon 5/127:00 amSTL - ICN
1 stop18h 30mAmerican Airlines
Fri 8/85:25 pmICN - STL
1 stop19h 05mAmerican Airlines
Deal found 3/27$1,685
This KAYAK deal was found by Cheapflights users on 3/27. 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 6/2812:28 pmSTL - ICN
2 stops32h 52mFinnair
Sat 7/129:50 pmICN - STL
2 stops39h 59mFinnair
Deal found 3/27$1,829
This Air France deal was found by Cheapflights users on 3/26. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/306:14 pmSTL - ICN
2 stops32h 26mKLM
Fri 6/2011:55 amICN - STL
2 stops46h 32mKLM
Deal found 3/26$1,884

Cheapflights Fare Finder

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 March 28, 2025.
Use the filters below to find and compare flights from St. Louis to South Korea that are best for you.

Fly from

St. Louis

Fly to

South Korea

Route

Depart

Return

Price

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mon 9/1

3:17 pm-11:00 am

2 stops29h 43m

Incheon Intl

Thu 9/11

12:00 pm-2:17 pm

2 stops40h 17m

$1,258

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mon 9/1

1:30 pm-4:20 pm

1 stop36h 50m

Incheon Intl

Thu 9/11

5:45 pm-3:16 pm

2 stops35h 31m

$1,271

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Sun 5/18

6:00 am-6:45 pm

2 stops46h 45m

Incheon Intl

Sat 5/24

8:45 pm-11:26 pm

2 stops40h 41m

$1,317

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Sat 9/13

3:17 pm-11:00 am

2 stops29h 43m

Incheon Intl

Sat 9/27

7:45 pm-2:17 pm

2 stops32h 32m

$1,425

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mon 9/1

9:50 am-5:05 pm

2 stops41h 15m

Incheon Intl

Wed 9/10

1:20 am-10:27 pm

2 stops35h 07m

$1,557

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Wed 9/10

6:30 am-9:50 pm

2 stops25h 20m

Seoul Gimpo Intl

Sat 9/20

7:20 pm-6:38 pm

2 stops37h 18m

$1,620

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Thu 4/24

5:54 pm-4:20 am

1 stop20h 26m

Incheon Intl

Sat 5/31

11:30 am-6:00 pm

1 stop20h 30m

$1,660

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mon 5/12

7:00 am-3:30 pm

1 stop18h 30m

Incheon Intl

Fri 8/8

5:25 pm-10:30 pm

1 stop19h 05m

$1,685

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Sat 6/28

12:28 pm-11:20 am

2 stops32h 52m

Incheon Intl

Sat 7/12

9:50 pm-11:49 pm

2 stops39h 59m

$1,829

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Fri 5/30

6:14 pm-4:40 pm

2 stops32h 26m

Incheon Intl

Fri 6/20

11:55 am-8:27 pm

2 stops46h 32m

$1,884

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 23 results
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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.

Cheapflights Insights

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

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 $1,002). Flying from St. Louis to South Korea in June is currently the most expensive (average of $1,661). 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 March 28, 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 March 28, 2025.
Read through reviews of airlines operating flights from St. Louis to South Korea, such as EVA Air, Korean Air and Japan Airlines. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,169 reviews

Crew

8.6

Food

8.1

Overall

8.4

Entertainment

8.0

Comfort

8.3

Boarding

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
EVA Air
8.4
Very good
1,169 reviews
EVA Air
8.4
Very good
1,169 reviews

Crew

8.6

Food

8.1

Overall

8.4

Entertainment

8.0

Comfort

8.3

Boarding

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
Korean Air
8.4
Very good
1,050 reviews
EVA Air
8.4
Very good
1,169 reviews

Crew

8.6

Food

8.1

Overall

8.4

Entertainment

8.0

Comfort

8.3

Boarding

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
Japan Airlines
8.3
Very good
1,440 reviews
EVA Air
8.4
Very good
1,169 reviews

Crew

8.6

Food

8.1

Overall

8.4

Entertainment

8.0

Comfort

8.3

Boarding

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
ANA
8.3
Very good
829 reviews
EVA Air
8.4
Very good
1,169 reviews

Crew

8.6

Food

8.1

Overall

8.4

Entertainment

8.0

Comfort

8.3

Boarding

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
Delta
8.0
Very good
7,896 reviews
EVA Air
8.4
Very good
1,169 reviews

Crew

8.6

Food

8.1

Overall

8.4

Entertainment

8.0

Comfort

8.3

Boarding

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

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 cheapest airlines to fly from St. Louis to South Korea one-way?

    $758 is the cheapest one-way deal found within the past few days, from Cathay Pacific. You may also be able to find cheap deals on Air Canada and Japan Airlines, with prices starting from $1,027 and $1,106, respectively.

  • 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 - Busan Gimhae 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 $1,002). Flying from St. Louis to South Korea in June is currently the most expensive (average of $1,661). 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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$799Average$1,024FlexibilityNo cancel feeOn-time67%
DeltaCheapest$902Average$1,673FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$902Average$1,451FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$996Average$1,527FlexibilityNo cancel feeOn-time71%
Korean AirCheapest$1,080Average$1,889FlexibilityNo cancel feeOn-time81%
Japan AirlinesCheapest$1,479Average$1,488FlexibilityNo cancel feeOn-time79%
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