Cheap flights from Incheon Intl Airport to St. Louis from $447

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Incheon Intl Airport to St. Louis departing on 6/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Asiana Airlines Logo
5:45 pm - 8:05 pm
ICN
-
STL
40h 20m
2 stops
Asiana Airlines Logo
1:00 pm - 4:05 pm
STL
-
ICN
37h 05m
2 stops
$661Asiana Airlines
Mon, May 4 - Thu, May 28
Air Canada Logo
5:45 pm - 8:05 pm
ICN
-
STL
40h 20m
2 stops
Air Canada Logo
1:00 pm - 4:05 pm
STL
-
ICN
37h 05m
2 stops
$666Air Canada
Tue, May 5 - Thu, May 28
Air Canada Logo
5:45 pm - 12:06 pm
ICN
-
STL
32h 21m
2 stops
Air Canada Logo
1:00 pm - 4:05 pm
STL
-
ICN
37h 05m
2 stops
$671Air Canada
Thu, May 21 - Sun, Jun 14
Air Canada Logo
5:45 pm - 12:06 pm
ICN
-
STL
32h 21m
2 stops
Air Canada Logo
7:30 am - 4:05 pm
STL
-
ICN
42h 35m
2 stops
$676Air Canada
Mon, May 4 - Tue, May 26
Asiana Airlines Logo
5:45 pm - 12:06 pm
ICN
-
STL
32h 21m
2 stops
Asiana Airlines Logo
7:30 am - 5:30 pm
STL
-
ICN
20h 00m
1 stop
$681Asiana Airlines
Mon, May 4 - Fri, May 29
Air Canada Logo
5:45 pm - 12:06 pm
ICN
-
STL
32h 21m
2 stops
Air Canada Logo
7:30 am - 5:30 pm
STL
-
ICN
20h 00m
1 stop
$686Air Canada
Mon, May 4 - Thu, May 28
Air Canada Logo
5:45 pm - 12:06 pm
ICN
-
STL
32h 21m
2 stops
Air Canada Logo
1:00 pm - 5:30 pm
STL
-
ICN
38h 30m
2 stops
$690Air Canada
Fri, May 1 - Thu, May 28
Air Canada Logo
7:05 pm - 12:06 pm
ICN
-
STL
31h 01m
1 stop
Air Canada Logo
1:00 pm - 4:25 pm
STL
-
ICN
37h 25m
1 stop
$691Air Canada
Wed, May 20 - Wed, Jun 17
Asiana Airlines Logo
7:05 pm - 12:06 pm
ICN
-
STL
31h 01m
1 stop
Asiana Airlines Logo
1:00 pm - 4:25 pm
STL
-
ICN
37h 25m
1 stop
$692Asiana Airlines
Wed, May 20 - Sun, Jun 14
Air Canada Logo
7:05 pm - 8:04 pm
ICN
-
STL
38h 59m
1 stop
Air Canada Logo
7:30 am - 5:30 pm
STL
-
ICN
20h 00m
1 stop
$696Air Canada
Fri, May 1 - Mon, Jun 1

Air Canada flights from Incheon Intl Airport to St. Louis

Our best Air Canada deals on Incheon Intl Airport to St. Louis flight tickets
Air Canada
May 5
ICN5:45 pmIncheon Intl
40h 20m
2 stops
STL8:05 pmLambert-St Louis
May 28
STL1:00 pmLambert-St Louis
37h 05m
2 stops
ICN4:05 pmIncheon Intl
$666
Air Canada
May 21
ICN5:45 pmIncheon Intl
32h 21m
2 stops
STL12:06 pmLambert-St Louis
Jun 14
STL1:00 pmLambert-St Louis
37h 05m
2 stops
ICN4:05 pmIncheon Intl
$671
Air Canada
May 4
ICN5:45 pmIncheon Intl
32h 21m
2 stops
STL12:06 pmLambert-St Louis
May 26
STL7:30 amLambert-St Louis
42h 35m
2 stops
ICN4:05 pmIncheon Intl
$676

United Airlines flights from Incheon Intl Airport to St. Louis

Our best United Airlines deals on Incheon Intl Airport to St. Louis flight tickets
United Airlines
Feb 5
ICN12:45 pmIncheon Intl
17h 52m
1 stop
STL3:37 pmLambert-St Louis
Feb 9
STL5:00 pmLambert-St Louis
21h 40m
1 stop
ICN5:40 amIncheon Intl
$1,355
United Airlines
Feb 5
ICN12:45 pmIncheon Intl
17h 52m
1 stop
STL3:37 pmLambert-St Louis
Feb 9
STL5:00 pmLambert-St Louis
21h 40m
1 stop
ICN5:40 amIncheon Intl
$1,358
United Airlines
Feb 5
ICN12:45 pmIncheon Intl
17h 52m
1 stop
STL3:37 pmLambert-St Louis
Feb 9
STL5:00 pmLambert-St Louis
21h 40m
1 stop
ICN5:40 amIncheon Intl
$1,361

momondo Fare Finder

 
Customize your flight search to find flights from Incheon Intl Airport 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, momondo users made 832,500 searches. Data last updated February 4, 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

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 5/4

5:45 pm-8:05 pm

2 stops40h 20m

Lambert-St Louis

Thu 5/28

1:00 pm-4:05 pm

2 stops37h 05m

$661

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Tue 5/5

5:45 pm-8:05 pm

2 stops40h 20m

Lambert-St Louis

Thu 5/28

1:00 pm-4:05 pm

2 stops37h 05m

$666

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Thu 5/21

5:45 pm-12:06 pm

2 stops32h 21m

Lambert-St Louis

Sun 6/14

1:00 pm-4:05 pm

2 stops37h 05m

$671

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 5/4

5:45 pm-12:06 pm

2 stops32h 21m

Lambert-St Louis

Tue 5/26

7:30 am-4:05 pm

2 stops42h 35m

$676

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 5/4

5:45 pm-12:06 pm

2 stops32h 21m

Lambert-St Louis

Fri 5/29

7:30 am-5:30 pm

1 stop20h 00m

$681

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 5/4

5:45 pm-12:06 pm

2 stops32h 21m

Lambert-St Louis

Thu 5/28

7:30 am-5:30 pm

1 stop20h 00m

$686

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Fri 5/1

5:45 pm-12:06 pm

2 stops32h 21m

Lambert-St Louis

Thu 5/28

1:00 pm-5:30 pm

2 stops38h 30m

$690

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Wed 5/20

7:05 pm-12:06 pm

1 stop31h 01m

Lambert-St Louis

Wed 6/17

1:00 pm-4:25 pm

1 stop37h 25m

$691

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Wed 5/20

7:05 pm-12:06 pm

1 stop31h 01m

Lambert-St Louis

Sun 6/14

1:00 pm-4:25 pm

1 stop37h 25m

$692

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Fri 5/1

7:05 pm-8:04 pm

1 stop38h 59m

Lambert-St Louis

Mon 6/1

7:30 am-5:30 pm

1 stop20h 00m

$696

Flights are sorted by cheapest round-trip flights first.

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How to get the cheapest flight ticket from Incheon Intl Airport to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Can stopping save me money on Incheon Intl Airport to St. Louis flights?

You could potentially save up to 13% on your flight if you consider stops on a Incheon Intl Airport to St. Louis flight.

When to book flights from Incheon Intl Airport to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Incheon Intl Airport to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Incheon Intl Airport to St. Louis (ICN to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Incheon Intl Airport to St. Louis

Fastest flight time

17h 24m

Direct flights

None
The fastest flight from Incheon Intl Airport to St. Louis takes 17h 24m
There are no direct flights from Incheon Intl Airport to St. Louis. There are no popular flight routes from Incheon Intl Airport to St. Louis.
  • How far is Incheon Intl to Lambert-St Louis by plane?

    Lambert-St Louis is 6682.0 mi away from Incheon Intl. By plane, this route typically takes 17h 24m.

  • When did momondo last update prices for flights from Incheon Intl Airport to Lambert-St Louis Airport?

    Prices for flights from Incheon Intl Airport to Lambert-St Louis Airport are updated daily.

  • How many operators does momondo search for flights from Incheon Intl Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from Incheon Intl Airport to Lambert-St Louis Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Incheon Intl Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Incheon Intl Airport to St. Louis?

Best airlines flying from Incheon Intl Airport to St. Louis

Compare and see reviews for airlines that fly from Incheon Intl Airport to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $568Free CancellationRating
7.2
11,218 reviews
Search American Airlines flights
DeltaPriceFrom $630Free CancellationRating
7.9
8,143 reviews
Search Delta flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Maryland Heights
Florissant
O'Fallon
Collinsville
St. Peters
Fenton
Wentzville
Alton
Farmington
Clayton
Edwardsville
Eureka
Festus
Litchfield
Glencoe
Shrewsbury

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Can I find flights from Seoul to St. Louis with flexible booking policies on momondo?

Flights from Seoul to St. Louis with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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