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Cheap flights from Incheon Intl Airport to St. Louis from $560

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.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Incheon Intl Airport to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Korean Air Logo
7:40 pm - 11:21 pm
ICN
-
STL
17h 41m
1 stop
Korean Air Logo
6:21 am - 4:50 pm
STL
-
ICN
20h 29m
2 stops
$1,070Korean Air
Mon, May 25 - Sun, May 31
Delta Logo
7:20 pm - 12:25 am
ICN
-
STL
19h 05m
1 stop
Delta Logo
6:00 am - 5:20 pm
STL
-
ICN
21h 20m
2 stops
$1,095Delta
Tue, Apr 14 - Tue, Apr 21
Air Canada Logo
5:45 pm - 10:45 pm
ICN
-
STL
19h 00m
2 stops
Air Canada Logo
2:25 pm - 4:05 pm
STL
-
ICN
35h 40m
2 stops
$1,120Air Canada
Sat, May 2 - Sat, May 9
Air Canada Logo
7:05 pm - 3:25 pm
ICN
-
STL
34h 20m
1 stop
Air Canada Logo
4:05 pm - 5:30 pm
STL
-
ICN
35h 25m
1 stop
$1,125Air Canada
Fri, Apr 24 - Sun, Apr 26
Delta Logo
7:00 pm - 1:21 pm
ICN
-
STL
32h 21m
2 stops
Delta Logo
5:30 pm - 5:20 pm
STL
-
ICN
33h 50m
1 stop
$1,126Delta
Fri, Jun 19 - Sat, Jul 4
Delta Logo
7:00 pm - 11:30 am
ICN
-
STL
30h 30m
2 stops
Delta Logo
5:30 pm - 5:20 pm
STL
-
ICN
33h 50m
1 stop
$1,128Delta
Fri, Jun 19 - Sat, Jul 4
Air Canada Logo
7:05 pm - 10:45 am
ICN
-
STL
29h 40m
2 stops
Air Canada Logo
4:05 pm - 5:30 pm
STL
-
ICN
35h 25m
1 stop
$1,131Air Canada
Fri, Apr 24 - Sun, Apr 26
Delta Logo
7:20 pm - 12:25 am
ICN
-
STL
19h 05m
1 stop
Delta Logo
7:00 am - 3:20 pm
STL
-
ICN
18h 20m
1 stop
$1,150Delta
Tue, Apr 14 - Tue, Apr 21
Delta Logo
7:20 pm - 12:25 am
ICN
-
STL
19h 05m
1 stop
Delta Logo
2:20 pm - 3:20 pm
STL
-
ICN
35h 00m
1 stop
$1,157Delta
Tue, Apr 14 - Tue, Apr 21
Delta Logo
7:20 pm - 12:21 am
ICN
-
STL
19h 01m
1 stop
Delta Logo
6:00 am - 5:20 pm
STL
-
ICN
21h 20m
2 stops
$1,162Delta
Thu, Apr 9 - Mon, Apr 20

Delta flights from Incheon Intl Airport to St. Louis

Our best Delta deals on Incheon Intl Airport to St. Louis flight tickets
Delta
Apr 14
ICN7:20 pmIncheon Intl
19h 05m
1 stop
STL12:25 amLambert-St Louis
Apr 21
STL6:00 amLambert-St Louis
21h 20m
2 stops
ICN5:20 pmIncheon Intl
$1,095
Delta
Jun 19
ICN7:00 pmIncheon Intl
32h 21m
2 stops
STL1:21 pmLambert-St Louis
Jul 4
STL5:30 pmLambert-St Louis
33h 50m
1 stop
ICN5:20 pmIncheon Intl
$1,126
Delta
Jun 19
ICN7:00 pmIncheon Intl
30h 30m
2 stops
STL11:30 amLambert-St Louis
Jul 4
STL5:30 pmLambert-St Louis
33h 50m
1 stop
ICN5:20 pmIncheon Intl
$1,128

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 2
ICN5:45 pmIncheon Intl
19h 00m
2 stops
STL10:45 pmLambert-St Louis
May 9
STL2:25 pmLambert-St Louis
35h 40m
2 stops
ICN4:05 pmIncheon Intl
$1,120
Air Canada
Apr 24
ICN7:05 pmIncheon Intl
34h 20m
1 stop
STL3:25 pmLambert-St Louis
Apr 26
STL4:05 pmLambert-St Louis
35h 25m
1 stop
ICN5:30 pmIncheon Intl
$1,125
Air Canada
Apr 24
ICN7:05 pmIncheon Intl
29h 40m
2 stops
STL10:45 amLambert-St Louis
Apr 26
STL4:05 pmLambert-St Louis
35h 25m
1 stop
ICN5:30 pmIncheon Intl
$1,131

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 March 22, 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

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 5/25

7:40 pm-11:21 pm

1 stop17h 41m

Lambert-St Louis

Sun 5/31

6:21 am-4:50 pm

2 stops20h 29m

$1,070

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Tue 4/14

7:20 pm-12:25 am

1 stop19h 05m

Lambert-St Louis

Tue 4/21

6:00 am-5:20 pm

2 stops21h 20m

$1,095

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Sat 5/2

5:45 pm-10:45 pm

2 stops19h 00m

Lambert-St Louis

Sat 5/9

2:25 pm-4:05 pm

2 stops35h 40m

$1,120

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Fri 4/24

7:05 pm-3:25 pm

1 stop34h 20m

Lambert-St Louis

Sun 4/26

4:05 pm-5:30 pm

1 stop35h 25m

$1,125

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Fri 6/19

7:00 pm-1:21 pm

2 stops32h 21m

Lambert-St Louis

Sat 7/4

5:30 pm-5:20 pm

1 stop33h 50m

$1,126

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Fri 6/19

7:00 pm-11:30 am

2 stops30h 30m

Lambert-St Louis

Sat 7/4

5:30 pm-5:20 pm

1 stop33h 50m

$1,128

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Fri 4/24

7:05 pm-10:45 am

2 stops29h 40m

Lambert-St Louis

Sun 4/26

4:05 pm-5:30 pm

1 stop35h 25m

$1,131
Quickest round-trip

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Tue 4/14

7:20 pm-12:25 am

1 stop19h 05m

Lambert-St Louis

Tue 4/21

7:00 am-3:20 pm

1 stop18h 20m

$1,150

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Tue 4/14

7:20 pm-12:25 am

1 stop19h 05m

Lambert-St Louis

Tue 4/21

2:20 pm-3:20 pm

1 stop35h 00m

$1,157

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Thu 4/9

7:20 pm-12:21 am

1 stop19h 01m

Lambert-St Louis

Mon 4/20

6:00 am-5:20 pm

2 stops21h 20m

$1,162

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

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

What is the typical price of a round-trip flight between Incheon Intl Airport and St. Louis?

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

You could potentially save up to 40% 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

19h 01m

Direct flights

None
The fastest flight from Incheon Intl Airport to St. Louis takes 19h 01m
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.
Search flight deals

  • 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 19h 01m.

  • 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
7.1
11,489 reviews
Search American Airlines flights
DeltaPriceFrom $630Free CancellationRating
7.9
8,314 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
Florissant
Maryland Heights
O'Fallon
Collinsville
St. Peters
Wentzville
Alton
Fenton
Farmington
Clayton
Festus
Edwardsville
Eureka
Litchfield
Shrewsbury
Grafton

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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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