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$470+ Cheap flights from St. Louis (STL) to Seoul (SEL)

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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SEL
Jan 11 — Jan 181
Sat 1/11
Sat 1/18
1 adult, Economy
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Cheap flight deals from St. Louis to Seoul

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Seoul (SEL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 6, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$799
(Air Canada)

One-way from

$470
(American Airlines)

Popular in

June

Cheapest in

December

Average price

$1,151
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 Seoul (SEL)
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One-way flight from Lambert-St Louis to Seoul (SEL)
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High demand for flights, 16% potential price rise
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Best time to find cheap flights, 2% potential price drop
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Average for round-trip flights in January 2025
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Find flight deals from St. Louis to Seoul

Cheapest flights from St. Louis to Seoul
Explore the most affordable flight options available from St. Louis to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 6, 2025.

This Air Canada deal was found by Cheapflights users on 1/5. 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.
Thu 3/63:50 pmSTL - ICN
1 stop35h 35mAir Canada
Thu 3/137:10 pmICN - STL
1 stop33h 56mAir Canada
Deal found 1/5$799
This American Airlines deal was found by Cheapflights users on 1/4. 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.
Sun 2/27:00 amSTL - ICN
1 stop18h 45mAmerican Airlines
Sun 2/96:50 pmICN - STL
1 stop18h 46mAmerican Airlines
Deal found 1/4$877
This United Airlines deal was found by Cheapflights users on 1/6. 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.
Thu 4/247:25 amSTL - ICN
2 stops30h 55mUnited Airlines
Sun 5/1111:30 amICN - STL
1 stop20h 29mUnited Airlines
Deal found 1/6$882
This Delta deal was found by Cheapflights users on 1/6. 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.
Sun 2/25:00 pmSTL - ICN
2 stops31h 30mDelta
Sat 2/89:35 amICN - STL
2 stops24h 09mDelta
Deal found 1/6$932
This Asiana Airlines deal was found by Cheapflights users on 1/5. 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 Asiana Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/216:00 pmSTL - ICN
1 stop20h 30mMultiple Airlines
Sat 8/308:40 pmICN - STL
1 stop34h 23mMultiple Airlines
Deal found 1/5$1,207
This Priceline deal was found by Cheapflights users on 1/6. 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.
Mon 3/247:07 amSTL - GMP
2 stops25h 13mJapan Airlines
Tue 4/157:55 amGMP - STL
2 stops29h 21mJapan Airlines
Deal found 1/6$1,599
This Trip.com deal was found by Cheapflights users on 1/4. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/86:00 amSTL - ICN
1 stop18h 50mKorean Air
Fri 1/107:25 pmICN - STL
1 stop31h 22mKorean Air
Deal found 1/4$1,625
This Finnair deal was found by Cheapflights users on 1/4. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/206:23 pmSTL - ICN
2 stops26h 57mFinnair
Thu 6/129:50 pmICN - STL
2 stops34h 35mFinnair
Deal found 1/4$1,635
This oojo deal was found by Cheapflights users on 1/6. 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 4/246:30 amSTL - ICN
2 stops45h 05mQatar Airways
Sat 5/101:20 amICN - STL
2 stops36h 39mQatar Airways
Deal found 1/6$1,723
This Ovago deal was found by Cheapflights users on 1/5. 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 10/186:15 amSTL - GMP
2 stops26h 05mANA
Mon 10/277:50 pmGMP - STL
2 stops30h 30mANA
Deal found 1/5$1,964
This WestJet deal was found by Cheapflights users on 1/5. 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.
Fri 6/65:40 pmSTL - ICN
2 stops59h 05mWestJet
Sat 6/218:45 pmICN - STL
2 stops38h 46mWestJet
Deal found 1/5$2,165
This Japan Airlines deal was found by Cheapflights users on 1/6. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/287:35 amSTL - GMP
2 stops24h 25mMultiple Airlines
Sun 6/17:55 amGMP - STL
2 stops22h 13mMultiple Airlines
Deal found 1/6$2,461

Find flights from St. Louis to Seoul within your budget

Customize your flight search to find flights from St. Louis to Seoul 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 January 6, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mon 2/3

3:50 pm-3:15 pm

2 stops32h 25m

Incheon Intl

Thu 2/6

8:10 pm-3:06 pm

1 stop33h 56m

$799

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Sun 2/2

7:00 am-4:45 pm

1 stop18h 45m

Incheon Intl

Sun 2/9

6:50 pm-10:36 pm

1 stop18h 46m

$877

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Sun 2/2

5:00 pm-3:30 pm

2 stops31h 30m

Incheon Intl

Sat 2/8

9:35 am-6:44 pm

2 stops24h 09m

$932

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mon 2/3

9:20 am-9:05 am

3 stops32h 45m

Incheon Intl

Thu 2/6

4:55 pm-3:06 pm

2 stops37h 11m

$1,403

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Tue 5/20

6:23 pm-11:20 am

2 stops26h 57m

Incheon Intl

Mon 6/9

9:50 pm-6:25 pm

2 stops34h 35m

$1,635

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Mon 2/3

5:40 am-6:20 pm

2 stops21h 40m

Seoul Gimpo Intl

Thu 2/6

7:50 am-11:23 am

2 stops18h 33m

$1,636

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Mon 3/24

7:07 am-6:20 pm

2 stops45h 13m

Seoul Gimpo Intl

Thu 4/17

7:55 pm-2:59 pm

2 stops57h 04m

$1,732

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mon 3/24

6:44 am-5:15 pm

2 stops44h 31m

Incheon Intl

Mon 4/14

1:20 am-10:29 pm

2 stops35h 09m

$1,734

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mon 5/19

7:00 am-3:00 pm

1 stop18h 00m

Incheon Intl

Mon 6/9

11:30 am-5:03 pm

1 stop19h 33m

$1,785

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Fri 5/16

3:44 pm-11:05 am

2 stops29h 21m

Seoul Gimpo Intl

Mon 5/26

12:40 pm-12:20 pm

2 stops37h 40m

$2,040

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/5

Showing 1-10 of 16 results
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Compare providers for flights from St. Louis to Seoul

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 St. Louis to Seoul in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust 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 St. Louis-Seoul flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Seoul flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Seoul flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Seoul flights, Cheapflights users trust FlightHub the most. FlightHub 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 St. Louis-Seoul 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 St. Louis to Seoul

Have a flexible travel schedule? Discover the best time to fly to Seoul 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 Seoul

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

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

Currently, October is the cheapest month in which you can book a flight from St. Louis to Seoul (average of $1,086). Flying from St. Louis to Seoul in June is currently the most expensive (average of $1,729). 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 SEL?

Find hourly flight availability from St. Louis to Seoul. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 6, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 23% on flights from St. Louis to Seoul by exploring options for tickets at noon.

Rainfall in Seoul by month

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

In terms of precipitation, rainfall in Seoul ranges from 1.1 - 10.0 inches per month. July is typically the wettest month, when rainfall can reach 10.0 in. December is typically the driest time to visit Seoul when rainfall is around 1.1 in.

Temperature in Seoul by month

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

If weather is an important factor for your trip to Seoul, 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 35.6 F).

Reviews of airlines servicing Seoul

Get insights into the airlines that provide service to Seoul. 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 Seoul. Reviews last updated January 6, 2025.
ANA
8.4
Very good
840 reviews

Crew

8.7

Food

7.7

Overall

8.4

Comfort

8.2

Entertainment

7.9

Boarding

8.6

Reviews

1 / 10

Your hospitality was excellent, very polite and kind. The meal was tasty and good. The buns were cold. Who likes cold buns?

ANA
8.4
Very good
840 reviews
ANA
8.4
Very good
840 reviews

Crew

8.7

Food

7.7

Overall

8.4

Comfort

8.2

Entertainment

7.9

Boarding

8.6

Reviews

1 / 10

Your hospitality was excellent, very polite and kind. The meal was tasty and good. The buns were cold. Who likes cold buns?

Japan Airlines
8.3
Very good
1,440 reviews
ANA
8.4
Very good
840 reviews

Crew

8.7

Food

7.7

Overall

8.4

Comfort

8.2

Entertainment

7.9

Boarding

8.6

Reviews

1 / 10

Your hospitality was excellent, very polite and kind. The meal was tasty and good. The buns were cold. Who likes cold buns?

Delta
8.0
Very good
8,513 reviews
ANA
8.4
Very good
840 reviews

Crew

8.7

Food

7.7

Overall

8.4

Comfort

8.2

Entertainment

7.9

Boarding

8.6

Reviews

1 / 10

Your hospitality was excellent, very polite and kind. The meal was tasty and good. The buns were cold. Who likes cold buns?

Finnair
7.7
Good
1,281 reviews
ANA
8.4
Very good
840 reviews

Crew

8.7

Food

7.7

Overall

8.4

Comfort

8.2

Entertainment

7.9

Boarding

8.6

Reviews

1 / 10

Your hospitality was excellent, very polite and kind. The meal was tasty and good. The buns were cold. Who likes cold buns?

Qatar Airways
7.5
Good
3,748 reviews
ANA
8.4
Very good
840 reviews

Crew

8.7

Food

7.7

Overall

8.4

Comfort

8.2

Entertainment

7.9

Boarding

8.6

Reviews

1 / 10

Your hospitality was excellent, very polite and kind. The meal was tasty and good. The buns were cold. Who likes cold buns?

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Seoul. 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 Seoul?

    For a flight from St. Louis to Seoul, you will be flying from Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city. Lambert-St Louis is the only St. Louis airport and it handles 0 outbound flights to Seoul per day. 6 airlines have flights to Seoul from Lambert-St Louis on a regular basis.

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

    Air Canada, at $799, was found to be the cheapest airline from St. Louis to Seoul.Alternate airlines to your destination round-trip include American Airlines and United Airlines. These flights start at 43% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from St. Louis to Seoul one-way?

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $470. Air Canada flights start at $885 while deals on Japan Airlines start at $901 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to Seoul 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 Seoul?

    Currently, October is the cheapest month in which you can book a flight from St. Louis to Seoul (average of $1,086). Flying from St. Louis to Seoul in June is currently the most expensive (average of $1,729). 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

Browse thousands of different options on Cheapflights for your next trip

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Top 6 airlines flying from St. Louis to Seoul

Discover the top 6 airlines that operate flights from St. Louis to Seoul. 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 January 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$870Average$1,236FlexibilityNo cancel feeOn-time67%
DeltaCheapest$902Average$1,622FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$902Average$1,249FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$1,001Average$1,487FlexibilityNo cancel feeOn-time71%
Korean AirCheapest$1,080Average$1,875FlexibilityNo cancel feeOn-time81%
Japan AirlinesCheapest$1,269Average$1,491FlexibilityNo cancel feeOn-time79%
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