St. Louis

$710+ Cheap flights from Incheon Intl (ICN) 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 6/5. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — STL
Jun 12 — Jun 191
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Cheap flight deals from Incheon Intl to St. Louis

Cheapest flights from Incheon Intl to St. Louis
Explore the most affordable flight options available from Incheon Intl to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 13, 2026.

This Ovago deal was found by Cheapflights users on 5/12. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/238:45 pm
ICN
-
STL
2 stops35h 22m
WestJet
Tue 7/143:58 pm
STL
-
ICN
2 stops36h 47m
WestJet
Deal found 5/12$1,376
This American Airlines deal was found by Cheapflights users on 5/12. 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.
Wed 10/286:35 pm
ICN
-
STL
2 stops27h 28m
American Airlines
Sat 10/313:33 pm
STL
-
ICN
1 stop34h 52m
American Airlines
Deal found 5/12$1,407
This Qatar Airways deal was found by Cheapflights users on 5/11. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/241:20 am
ICN
-
STL
2 stops36h 56m
Qatar Airways
Tue 8/256:00 am
STL
-
ICN
2 stops45h 05m
Qatar Airways
Deal found 5/11$1,409
This Kiwi.com deal was found by Cheapflights users on 5/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/297:35 pm
ICN
-
STL
1 stop37h 10m
Multiple Airlines
Fri 7/312:52 pm
STL
-
ICN
2 stops39h 18m
Multiple Airlines
Deal found 5/9$1,429
This Qatar Airways deal was found by Cheapflights users on 5/11. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/221:20 am
ICN
-
STL
2 stops36h 56m
Qatar Airways
Tue 7/141:25 pm
STL
-
ICN
2 stops37h 40m
Qatar Airways
Deal found 5/11$1,475
This WestJet deal was found by Cheapflights users on 5/12. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/78:45 pm
ICN
-
STL
2 stops53h 49m
WestJet
Wed 6/171:59 pm
STL
-
ICN
2 stops38h 46m
WestJet
Deal found 5/12$1,518
This Qatar Airways deal was found by Cheapflights users on 5/8. 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.
Mon 6/291:20 am
ICN
-
STL
2 stops36h 56m
Qatar Airways
Tue 7/141:25 pm
STL
-
ICN
2 stops37h 40m
Qatar Airways
Deal found 5/8$1,524
This Kiwi.com deal was found by Cheapflights users on 5/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/47:35 pm
ICN
-
STL
1 stop18h 19m
Multiple Airlines
Tue 6/96:00 am
STL
-
ICN
2 stops25h 40m
Multiple Airlines
Deal found 5/12$1,540
This Kiwi.com deal was found by Cheapflights users on 5/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/17:35 pm
ICN
-
STL
1 stop33h 41m
Multiple Airlines
Mon 6/87:41 pm
STL
-
ICN
2 stops35h 59m
Multiple Airlines
Deal found 5/12$1,547

Find flight deals from Incheon Intl to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Incheon Intl (ICN) 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 13, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,376
(Ovago)

One-way from

$710
(WestJet)

Popular in

January

Cheapest in

November

Average price

$1,400
Provider with most accurate pricing for Incheon Intl-Lambert-St Louis flight deals.
Provider most trusted by Cheapflights users for Incheon Intl-Lambert-St Louis flights.
From Incheon Intl to Lambert-St Louis
One-way flight from Incheon Intl to Lambert-St Louis
Highest demand for flights based on searches. 2% potential increase in price ($24 potential increase over avg. RT price).
Cheapest flight prices on average. 5% potential price decrease ($55 potential savings vs. average RT price).
Average for round-trip flights in May 2026

Cheapflights Fare Finder

 
Customize your flight search to find flights from Incheon Intl 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 13, 2026.
Use the filters below to find and compare flights from Incheon Intl Airport to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Wed 10/28

6:35 pm-8:03 am

2 stops27h 28m

Lambert-St Louis

Sat 10/31

3:33 pm-4:25 pm

1 stop34h 52m

$1,407

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Wed 6/24

1:20 am-12:16 am

2 stops36h 56m

Lambert-St Louis

Tue 8/25

6:00 am-5:05 pm

2 stops45h 05m

$1,409

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Fri 5/29

7:35 pm-6:45 pm

1 stop37h 10m

Lambert-St Louis

Fri 7/31

2:52 pm-8:10 pm

2 stops39h 18m

$1,429

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 6/22

1:20 am-12:16 am

2 stops36h 56m

Lambert-St Louis

Tue 7/14

1:25 pm-5:05 pm

2 stops37h 40m

$1,475

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Sun 6/7

8:45 pm-12:34 pm

2 stops53h 49m

Lambert-St Louis

Wed 6/17

1:59 pm-6:45 pm

2 stops38h 46m

$1,518

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 6/29

1:20 am-12:16 am

2 stops36h 56m

Lambert-St Louis

Tue 7/14

9:08 am-5:05 pm

2 stops41h 57m

$1,524
Cheapest one-way

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Fri 6/5

8:45 pm-11:21 pm

2 stops40h 36m

$710
Quickest one-way

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Fri 6/5

8:45 pm-12:06 pm

2 stops29h 21m

$794

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Wed 6/24

7:25 am-3:16 pm

3 stops45h 51m

$794

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Tue 6/16

8:45 pm-7:23 pm

2 stops36h 38m

$797

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/12

Showing 1-10 of 16 resultsSorted by cheapest first
1
2

Compare providers for flights from Incheon Intl 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 Incheon Intl to St. Louis in May.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
GurufarePrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy2 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 Incheon Intl Airport-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Incheon Intl Airport-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Incheon Intl Airport-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Incheon Intl Airport-St. Louis 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 Incheon Intl Airport-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 Incheon Intl to St. Louis

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

How much does it cost to fly round-trip from Incheon Intl Airport to St. Louis?

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 13, 2026.
Get a feel of what it's like to fly with Delta from Incheon Intl Airport to St. Louis by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Overall

7.9

Crew

8.5

Entertainment

7.8

Boarding

8.1

Food

7.2

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Overall

7.9

Crew

8.5

Entertainment

7.8

Boarding

8.1

Food

7.2

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Related info for your journey

Find useful and relevant information for your journey from Incheon Intl 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 Incheon Intl?

    Most people fly into Lambert-St Louis (STL) if they book a flight to St. Louis from Incheon Intl. On average, Lambert-St Louis has 0 inbound flights from Incheon Intl per day from 1 airline. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

  • How long is the flight from Incheon Intl Airport to St. Louis?

    For as low as $1,407, American Airlines can have you in St. Louis from Incheon Intl Airport in 27h 28m. Incheon Intl Airport and St. Louis are separated by a distance of 6670 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What is the cheapest airline to fly from Incheon Intl Airport to St. Louis round-trip?

    Flying on Delta is currently your cheapest option to St. Louis, with prices starting at $630. This flight start at 37% lower than the current average price 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Incheon Intl 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.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus

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Alternative routes for Incheon Intl to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Incheon Intl to St. Louis

Discover the top airline that operate flights from Incheon Intl 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 13, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$630Average$835FlexibilityNo cancel feeOn-timeN/A

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