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$549+ Cheap flights from Seoul (SEL) 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 11/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — STL
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Seoul to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Seoul (SEL) to St. Louis (STL). 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 June 12, 2025.

Round-trip from

$751
(United Airlines)

One-way from

$549
(American Airlines)
From Seoul (SEL) to Lambert-St Louis
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One-way flight from Seoul (SEL) to Lambert-St Louis
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Find flight deals from Seoul to St. Louis

Cheapest flights from Seoul to St. Louis
Explore the most affordable flight options available from Seoul to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This United Airlines deal was found by Cheapflights users on 6/11. 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 12/1512:45 pmICN - STL
1 stop20h 08mUnited Airlines
Fri 1/307:05 amSTL - ICN
1 stop18h 10mUnited Airlines
Deal found 6/11$735
This American Airlines deal was found by Cheapflights users on 6/12. 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 9/155:25 pmICN - STL
1 stop19h 25mAmerican Airlines
Tue 10/147:19 amSTL - ICN
1 stop18h 11mAmerican Airlines
Deal found 6/12$828
This Asiana Airlines deal was found by Cheapflights users on 6/10. 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.
Tue 8/198:55 pmICN - STL
1 stop33h 58mMultiple Airlines
Sun 11/165:29 pmSTL - ICN
2 stops33h 06mMultiple Airlines
Deal found 6/10$872
This Gotogate deal was found by Cheapflights users on 6/11. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/176:50 pmICN - STL
2 stops35h 36mAir Canada
Thu 11/204:15 pmSTL - ICN
2 stops33h 50mAir Canada
Deal found 6/11$927
This Mytrip deal was found by Cheapflights users on 6/12. 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.
Thu 7/38:55 pmICN - STL
1 stop21h 59mAsiana Airlines
Sat 7/266:00 amSTL - ICN
1 stop32h 00mAsiana Airlines
Deal found 6/12$973
This Hawaiian Airlines deal was found by Cheapflights users on 6/10. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/118:35 pmICN - STL
1 stop32h 17mHawaiian Airlines
Sun 12/217:00 amSTL - ICN
1 stop20h 35mHawaiian Airlines
Deal found 6/10$1,333
This Ovago deal was found by Cheapflights users on 6/10. 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.
Mon 9/157:55 amGMP - STL
2 stops19h 28mJapan Airlines
Tue 10/148:26 amSTL - GMP
2 stops36h 19mJapan Airlines
Deal found 6/10$1,344
This Gotogate deal was found by Cheapflights users on 6/9. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/27:55 pmGMP - STL
2 stops30h 33mANA
Mon 10/139:20 amSTL - GMP
2 stops23h 00mANA
Deal found 6/9$1,388
This Alaska Airlines deal was found by Cheapflights users on 6/12. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/279:25 pmICN - STL
2 stops64h 34mAlaska Airlines
Sun 8/37:32 pmSTL - ICN
2 stops57h 28mAlaska Airlines
Deal found 6/12$1,397
This Japan Airlines deal was found by Cheapflights users on 6/11. 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.
Fri 9/127:55 amGMP - STL
2 stops18h 01mMultiple Airlines
Fri 10/177:23 amSTL - GMP
2 stops24h 27mMultiple Airlines
Deal found 6/11$1,423
This Korean Air deal was found by Cheapflights users on 6/10. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/117:30 pmICN - STL
1 stop18h 32mKorean Air
Sun 12/216:04 amSTL - ICN
1 stop18h 26mKorean Air
Deal found 6/10$1,696
This Qatar Airways deal was found by Cheapflights users on 6/10. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2112:20 amICN - STL
2 stops36h 42mQatar Airways
Mon 12/292:00 pmSTL - ICN
2 stops36h 15mQatar Airways
Deal found 6/10$1,808

Cheapflights Fare Finder

Customize your flight search to find flights from Seoul to St. Louis 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 June 12, 2025.
Use the filters below to find and compare flights from Seoul to St. Louis that are best for you.

Fly from

Seoul

Fly to

St. Louis

Route

Depart

Return

Price

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 9/15

11:30 am-4:53 pm

1 stop19h 23m

Lambert-St Louis

Tue 10/14

5:47 pm-4:20 am

1 stop20h 33m

$751

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 9/15

5:25 pm-10:50 pm

1 stop19h 25m

Lambert-St Louis

Tue 10/14

7:19 am-3:30 pm

1 stop18h 11m

$828

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Tue 8/19

8:55 pm-4:53 pm

1 stop33h 58m

Lambert-St Louis

Sun 11/16

5:29 pm-5:35 pm

2 stops33h 06m

$872

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 11/17

6:50 pm-3:26 pm

2 stops35h 36m

Lambert-St Louis

Thu 11/20

4:15 pm-5:05 pm

2 stops33h 50m

$927

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Thu 7/3

8:55 pm-4:54 am

1 stop21h 59m

Lambert-St Louis

Sat 7/26

6:00 am-4:00 am

1 stop32h 00m

$973

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Mon 9/15

7:55 am-1:23 pm

2 stops19h 28m

Lambert-St Louis

Tue 10/14

8:26 am-10:45 am

2 stops36h 19m

$1,344

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Thu 10/2

7:55 pm-12:28 pm

2 stops30h 33m

Lambert-St Louis

Mon 10/13

9:20 am-10:20 pm

2 stops23h 00m

$1,388

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Sun 7/27

9:25 pm-11:59 pm

2 stops64h 34m

Lambert-St Louis

Sun 8/3

7:32 pm-7:00 pm

2 stops57h 28m

$1,397

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Fri 9/12

7:55 am-11:56 am

2 stops18h 01m

Lambert-St Louis

Fri 10/17

7:23 am-9:50 pm

2 stops24h 27m

$1,423

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Sun 8/3

7:40 pm-12:38 am

1 stop18h 58m

Lambert-St Louis

Thu 8/14

7:35 am-3:20 pm

1 stop17h 45m

$1,750

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 23 results
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Best time to book a flight from Seoul to St. Louis

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

Rainfall in St. Louis by month

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

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.

Temperature in St. Louis by month

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

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).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated June 12, 2025.
Peruse reviews from past customers who have flown with Korean Air, Japan Airlines and ANA from Seoul to St. Louis to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,088 reviews

Food

8.1

Boarding

8.5

Comfort

8.3

Overall

8.4

Entertainment

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Korean Air
8.4
Very good
1,088 reviews
Korean Air
8.4
Very good
1,088 reviews

Food

8.1

Boarding

8.5

Comfort

8.3

Overall

8.4

Entertainment

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Japan Airlines
8.3
Very good
1,489 reviews
Korean Air
8.4
Very good
1,088 reviews

Food

8.1

Boarding

8.5

Comfort

8.3

Overall

8.4

Entertainment

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
ANA
8.3
Very good
882 reviews
Korean Air
8.4
Very good
1,088 reviews

Food

8.1

Boarding

8.5

Comfort

8.3

Overall

8.4

Entertainment

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Asiana Airlines
8.2
Very good
440 reviews
Korean Air
8.4
Very good
1,088 reviews

Food

8.1

Boarding

8.5

Comfort

8.3

Overall

8.4

Entertainment

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Alaska Airlines
8.0
Very good
10,000 reviews
Korean Air
8.4
Very good
1,088 reviews

Food

8.1

Boarding

8.5

Comfort

8.3

Overall

8.4

Entertainment

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

Related info for your journey

Find useful and relevant information for your journey from Seoul 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 Seoul?

    If you book a flight to St. Louis from Seoul, you will be flying to 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. There are 0 flights from Seoul to Lambert-St Louis per day from 1 airline.

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

    Currently priced at $751, United Airlines will fly you from Seoul to St. Louis and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and Air Canada - these airlines can fly you to your destination from $828 and $927, respectively.

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

    The cheapest airlines for a one-way flight from Seoul to St. Louis are American Airlines ($549), Air Canada ($654), and WestJet ($884).

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Seoul to St. Louis (average of $311). Flying from Seoul 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

Traveling to a place near Seoul?

Book flights to Seoul if you plan to visit one of these locations
O'Fallon
Maryland Heights
Fairview Heights
Collinsville
Eureka
St. Peters
Glencoe
Festus
Alton
Farmington

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Top airline flying from Seoul to St. Louis

Discover the top airline that operate flights from Seoul to St. Louis. 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$687Average$1,206FlexibilityNo cancel feeOn-timeN/A

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