$563+ 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 7/2. Fares are subject to change and may not be available on all flights or dates of travel.
STL — ICN
May 25 — Jun 11
1 adult, Economy
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Find cheap flights from St. Louis to South Korea 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 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 May 20, 2025.
Most accurate provider | AranGrant 3 stars |
|---|---|
Most trusted provider | AranGrant 3 stars |
Round-trip from | $1,283 (Delta) |
One-way from | $563 (United Airlines) |
Popular in | August |
Cheapest in | December |
Average price | $1,393 |
Find flight deals from St. Louis to South Korea
Cheapest flights from St. Louis to South KoreaExplore 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 May 20, 2025.
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 May 20, 2025.
This United Airlines deal was found by Cheapflights users on 5/19. 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 11/107:05 amSTL - ICN
1 stop18h 10mUnited Airlines
Thu 11/276:00 pmICN - STL
1 stop21h 27mUnited Airlines
Deal found 5/19![United Airlines logo]()
$968
This American Airlines deal was found by Cheapflights users on 5/19. 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 9/17:01 amSTL - ICN
1 stop18h 29mAmerican Airlines
Tue 9/305:25 pmICN - STL
1 stop19h 02mAmerican Airlines
Deal found 5/19![American Airlines logo]()
$976
This Delta deal was found by Cheapflights users on 5/19. 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.
Mon 11/105:45 pmSTL - ICN
2 stops30h 45mDelta
Thu 11/279:35 amICN - STL
2 stops21h 23mDelta
Deal found 5/19![Delta logo]()
$989
This Air Canada deal was found by Cheapflights users on 5/19. 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.
Sat 10/184:05 pmSTL - ICN
2 stops34h 00mAir Canada
Mon 10/275:50 pmICN - STL
2 stops35h 36mAir Canada
Deal found 5/19![Air Canada logo]()
$1,184
This Expedia deal was found by Cheapflights users on 5/19. 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.
Thu 7/36:28 amSTL - GMP
2 stops25h 22mJapan Airlines
Thu 7/107:55 amGMP - STL
2 stops29h 35mJapan Airlines
Deal found 5/19![Japan Airlines logo]()
$1,327
This Fareboom deal was found by Cheapflights users on 5/19. 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 10/113:57 pmSTL - ICN
2 stops29h 03mEVA Air
Sat 10/257:45 pmICN - STL
2 stops32h 07mEVA Air
Deal found 5/19![EVA Air logo]()
$1,407
This Turkish Airlines deal was found by Cheapflights users on 5/20. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/105:18 pmSTL - ICN
2 stops34h 02mMultiple Airlines
Wed 11/2612:10 amICN - STL
2 stops29h 08mMultiple Airlines
Deal found 5/20![Multiple Airlines logo]()
$1,424
This oojo deal was found by Cheapflights users on 5/19. 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.
Wed 5/216:52 amSTL - ICN
2 stops48h 18mCathay Pacific
Sun 8/31:40 pmICN - STL
2 stops43h 28mCathay Pacific
Deal found 5/19![Cathay Pacific logo]()
$1,809
This oojo deal was found by Cheapflights users on 5/19. 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.
Sat 9/276:30 pmSTL - ICN
2 stops56h 35mQatar Airways
Sat 10/2512:20 amICN - STL
2 stops36h 14mQatar Airways
Deal found 5/19![Qatar Airways logo]()
$1,971
This Ovago deal was found by Cheapflights users on 5/19. 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.
Tue 5/207:00 amSTL - ICN
1 stop31h 30mAsiana Airlines
Fri 6/138:55 pmICN - STL
1 stop22h 08mAsiana Airlines
Deal found 5/19![Asiana Airlines logo]()
$1,984
This Booking.com deal was found by Cheapflights users on 5/19. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/113:30 pmSTL - GMP
2 stops37h 05mANA
Sat 10/2512:40 pmGMP - STL
2 stops39h 38mANA
Deal found 5/19![ANA logo]()
$2,159
This Travelocity deal was found by Cheapflights users on 5/19. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/197:20 amSTL - GMP
2 stops37h 25mMultiple Airlines
Sun 6/298:10 amGMP - STL
2 stops42h 26mMultiple Airlines
Deal found 5/19![Multiple Airlines logo]()
$2,170
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 May 20, 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
Sat 7/5
3:57 pm-5:20 pm
1 stop35h 23m
Incheon Intl
Fri 7/11
6:40 pm-11:20 pm
1 stop18h 40m
$1,283
St. LouisSeoul
STL - GMP
STLGMP
Lambert-St Louis
Thu 7/3
6:28 am-9:50 pm
2 stops25h 22m
Seoul Gimpo Intl
Thu 7/10
7:55 am-11:30 pm
2 stops29h 35m
$1,327
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Thu 7/3
5:37 am-3:30 pm
1 stop19h 53m
Incheon Intl
Thu 7/10
5:25 pm-8:31 pm
1 stop17h 06m
$1,341
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Tue 6/3
7:30 am-5:30 pm
1 stop20h 00m
Incheon Intl
Mon 6/9
5:45 pm-12:36 pm
2 stops32h 51m
$1,351
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Thu 7/3
5:15 am-3:00 pm
2 stops19h 45m
Incheon Intl
Thu 7/10
4:50 pm-9:31 am
2 stops30h 41m
$1,490
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Tue 6/3
7:00 am-5:55 pm
1 stop20h 55m
Incheon Intl
Mon 6/9
6:20 pm-12:04 am
1 stop19h 44m
$1,511
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Sat 7/5
7:32 pm-5:05 pm
2 stops55h 33m
Incheon Intl
Sun 7/20
1:20 am-11:59 pm
2 stops36h 39m
$2,013
St. LouisSeoul
STL - GMP
STLGMP
Lambert-St Louis
Thu 6/19
7:20 am-10:45 am
2 stops37h 25m
Seoul Gimpo Intl
Sun 6/29
8:10 am-12:36 pm
2 stops42h 26m
$2,170
St. LouisSeoul
STL - GMP
STLGMP
Lambert-St Louis
Sat 7/5
9:09 am-10:20 pm
2 stops23h 11m
Seoul Gimpo Intl
Sat 7/12
7:40 am-7:31 pm
2 stops25h 51m
$4,846
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Wed 7/2
1:42 pm-4:20 am
2 stops24h 38m
$563
Showing 1-10 of 22 results
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 $1,001). Flying from St. Louis to South Korea in December is currently the most expensive (average of $1,635). 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 May 20, 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 May 20, 2025.
Entertainment
8.0
Overall
8.4
Boarding
8.4
Comfort
8.3
Crew
8.6
Food
8.1
Reviews
1 / 20
10.0
ExcellentDale,Apr 2025
SFO - TPE
Entertainment
8.0
Overall
8.4
Boarding
8.4
Comfort
8.3
Crew
8.6
Food
8.1
Reviews
1 / 20
10.0
ExcellentDale,Apr 2025
SFO - TPE
Entertainment
8.0
Overall
8.4
Boarding
8.4
Comfort
8.3
Crew
8.6
Food
8.1
Reviews
1 / 20
10.0
ExcellentDale,Apr 2025
SFO - TPE
Entertainment
8.0
Overall
8.4
Boarding
8.4
Comfort
8.3
Crew
8.6
Food
8.1
Reviews
1 / 20
10.0
ExcellentDale,Apr 2025
SFO - TPE
Entertainment
8.0
Overall
8.4
Boarding
8.4
Comfort
8.3
Crew
8.6
Food
8.1
Reviews
1 / 20
10.0
ExcellentDale,Apr 2025
SFO - TPE
Entertainment
8.0
Overall
8.4
Boarding
8.4
Comfort
8.3
Crew
8.6
Food
8.1
Reviews
1 / 20
10.0
ExcellentDale,Apr 2025
SFO - TPE
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.
Browse thousands of different options on Cheapflights for your next trip
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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.
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 May 20, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$799 | Average$1,081 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$902 | Average$1,644 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$902 | Average$1,498 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$996 | Average$1,668 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$1,080 | Average$1,875 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$1,479 | Average$1,488 | FlexibilityNo cancel fee | On-time79% |