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St. Louis

$505+ 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 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — STL
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$917
(Kiwi.com)

One-way from

$505
(Kiwi.com)
Provider with most accurate pricing for Seoul (SEL)-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seoul (SEL)-Lambert-St Louis flights.
Search Deals
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 May 1, 2025.

This Kiwi.com deal was found by Cheapflights users on 4/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/136:20 pmICN - STL
1 stop19h 39mMultiple Airlines
Sat 8/97:32 pmSTL - ICN
1 stop32h 23mMultiple Airlines
Deal found 4/29$917
This Gotogate deal was found by Cheapflights users on 4/30. 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.
Sun 11/28:10 pmICN - STL
1 stop34h 16mAir Canada
Sat 11/84:15 pmSTL - ICN
2 stops57h 50mAir Canada
Deal found 4/30$962
This American Airlines deal was found by Cheapflights users on 4/30. 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 02mAmerican Airlines
Tue 10/145:28 amSTL - ICN
1 stop20h 02mAmerican Airlines
Deal found 4/30$1,054
This United Airlines deal was found by Cheapflights users on 4/30. 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 9/411:30 amICN - STL
2 stops19h 03mUnited Airlines
Sun 9/75:30 pmSTL - ICN
2 stops31h 30mUnited Airlines
Deal found 4/30$1,079
This Delta deal was found by Cheapflights users on 4/30. 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.
Thu 5/157:20 pmICN - STL
2 stops29h 27mDelta
Sat 8/25:23 pmSTL - ICN
2 stops33h 57mDelta
Deal found 4/30$1,236
This Gotogate deal was found by Cheapflights users on 4/28. 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 8/287:55 pmGMP - STL
2 stops30h 30mANA
Tue 9/308:10 amSTL - GMP
2 stops24h 10mANA
Deal found 4/28$1,237
This Alaska Airlines deal was found by Cheapflights users on 4/30. 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.
Fri 5/309:25 pmICN - STL
2 stops40h 39mAlaska Airlines
Fri 6/66:18 pmSTL - ICN
2 stops34h 42mAlaska Airlines
Deal found 4/30$1,343
This Japan Airlines deal was found by Cheapflights users on 4/28. 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 8/297:55 amGMP - STL
2 stops18h 53mJapan Airlines
Tue 9/307:30 amSTL - GMP
2 stops24h 20mJapan Airlines
Deal found 4/28$1,376
This WestJet deal was found by Cheapflights users on 4/29. 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 6/138:45 pmICN - STL
2 stops38h 49mWestJet
Fri 6/203:42 pmSTL - ICN
2 stops61h 03mWestJet
Deal found 4/29$1,386
This Korean Air deal was found by Cheapflights users on 4/28. 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.
Mon 8/257:40 pmICN - STL
1 stop18h 58mKorean Air
Tue 9/307:30 amSTL - ICN
1 stop17h 50mKorean Air
Deal found 4/28$1,441
This Mytrip deal was found by Cheapflights users on 4/30. 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 7/248:55 pmICN - STL
1 stop21h 59mAsiana Airlines
Thu 8/75:41 pmSTL - ICN
1 stop20h 19mAsiana Airlines
Deal found 4/30$1,566
This Qatar Airways deal was found by Cheapflights users on 4/30. 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.
Sat 11/112:20 amICN - STL
2 stops36h 21mQatar Airways
Sat 11/811:20 amSTL - ICN
2 stops38h 55mQatar Airways
Deal found 4/30$1,649

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 May 1, 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

Tue 5/13

6:20 pm-11:59 pm

1 stop19h 39m

Lambert-St Louis

Sat 8/9

7:32 pm-5:55 pm

1 stop32h 23m

$917

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 9/15

5:25 pm-10:27 pm

1 stop19h 02m

Lambert-St Louis

Tue 10/14

5:28 am-3:30 pm

1 stop20h 02m

$1,054

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Thu 9/4

11:30 am-4:53 pm

1 stop19h 23m

Lambert-St Louis

Sun 9/7

5:30 pm-3:00 pm

2 stops31h 30m

$1,079

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 5/12

5:45 pm-7:58 pm

2 stops40h 13m

Lambert-St Louis

Mon 8/4

1:30 pm-4:05 pm

2 stops36h 35m

$1,091

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Thu 5/15

7:20 pm-10:47 am

2 stops29h 27m

Lambert-St Louis

Mon 8/4

6:30 am-4:30 pm

2 stops20h 00m

$1,236

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Thu 8/28

7:55 pm-12:25 pm

2 stops30h 30m

Lambert-St Louis

Tue 9/30

8:10 am-10:20 pm

2 stops24h 10m

$1,237

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Fri 5/30

9:25 pm-12:04 am

2 stops40h 39m

Lambert-St Louis

Fri 6/6

6:18 pm-7:00 pm

2 stops34h 42m

$1,343

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Fri 8/29

7:55 am-12:48 pm

2 stops18h 53m

Lambert-St Louis

Tue 9/30

7:30 am-9:50 pm

2 stops24h 20m

$1,376

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Fri 6/13

8:45 pm-9:34 pm

2 stops38h 49m

Lambert-St Louis

Fri 6/20

3:42 pm-6:45 pm

2 stops61h 03m

$1,386

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 8/25

7:40 pm-12:38 am

1 stop18h 58m

Lambert-St Louis

Tue 9/30

7:30 am-3:20 pm

1 stop17h 50m

$1,441

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 25 results
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Compare providers for flights from Seoul to St. Louis

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 Seoul to St. Louis in May.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 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 Seoul-St. Louis flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Seoul-St. Louis flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Seoul-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seoul-St. Louis flights, Cheapflights users trust AranGrant the most. AranGrant 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 Seoul-St. Louis 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 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 May 1, 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
1,068 reviews

Food

8.1

Boarding

8.5

Crew

8.7

Entertainment

8.2

Comfort

8.3

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.
Korean Air
8.4
Very good
1,068 reviews
Korean Air
8.4
Very good
1,068 reviews

Food

8.1

Boarding

8.5

Crew

8.7

Entertainment

8.2

Comfort

8.3

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.
Japan Airlines
8.3
Very good
1,464 reviews
Korean Air
8.4
Very good
1,068 reviews

Food

8.1

Boarding

8.5

Crew

8.7

Entertainment

8.2

Comfort

8.3

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.
ANA
8.3
Very good
852 reviews
Korean Air
8.4
Very good
1,068 reviews

Food

8.1

Boarding

8.5

Crew

8.7

Entertainment

8.2

Comfort

8.3

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.
Asiana Airlines
8.2
Very good
442 reviews
Korean Air
8.4
Very good
1,068 reviews

Food

8.1

Boarding

8.5

Crew

8.7

Entertainment

8.2

Comfort

8.3

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.
Alaska Airlines
8.0
Very good
9,968 reviews
Korean Air
8.4
Very good
1,068 reviews

Food

8.1

Boarding

8.5

Crew

8.7

Entertainment

8.2

Comfort

8.3

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.

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 2 different airlines.

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

    Currently priced at $1,054, American Airlines will fly you from Seoul to St. Louis and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Air Canada - these airlines can fly you to your destination from $1,079 and $1,091, 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 WestJet ($870), Alaska Airlines ($883), and Japan Airlines ($945).

  • 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?

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Top 2 airlines flying from Seoul to St. Louis

Discover the top 2 airlines 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$941Average$1,464FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$1,312Average$1,482FlexibilityNo cancel feeOn-time81%

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