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ICN - STL

Find cheap flights from Seoul Incheon Airport to St. Louis from $588

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Incheon to St. Louis departing on 6/12. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Wed 6/12
Wed 6/19

Search hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Incheon to St. Louis, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Incheon to St. Louis, as well as popular online travel agencies
In the last 7 days travelers have searched 41,771,603 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

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Filter your dealsChoose cabin class, free Wi-Fi and more.

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Cheap flight deals from Incheon to St. Louis (ICN-STL)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Incheon to St. Louis that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
6:00 pm - 3:20 pmICN-STL
35h 20m2 stops
4:10 pm - 4:00 pmSTL-ICN
33h 50m2 stops
$1,179Air Canada
Find Deal
Wed, Oct 16 - Mon, Oct 28
7:40 pm - 9:31 pmICN-STL
15h 51m1 stop
3:30 pm - 3:20 pmSTL-ICN
33h 50m1 stop
$1,184Delta
Find Deal
Fri, Oct 11 - Tue, Oct 15
8:40 pm - 12:27 amICN-STL
17h 47m1 stop
6:00 pm - 4:30 amSTL-ICN
20h 30m1 stop
$1,214Asiana Airlines
Find Deal
Mon, Sep 9 - Wed, Sep 18
7:40 pm - 9:31 pmICN-STL
15h 51m1 stop
6:30 am - 3:20 pmSTL-ICN
18h 50m1 stop
$1,257Korean Air
Find Deal
Mon, Oct 7 - Fri, Oct 25
11:40 am - 3:41 pmICN-STL
42h 01m2 stops
5:31 pm - 9:55 amSTL-ICN
50h 24m2 stops
$1,329Lufthansa
Find Deal
Tue, Jun 11 - Tue, Jun 18
12:25 pm - 1:30 pmICN-STL
39h 05m1 stop
5:31 pm - 9:55 amSTL-ICN
50h 24m2 stops
$1,345Lufthansa
Find Deal
Tue, Jun 11 - Tue, Jun 18
8:40 pm - 12:27 amICN-STL
17h 47m1 stop
6:00 pm - 4:00 amSTL-ICN
20h 00m1 stop
$1,360Asiana Airlines
Find Deal
Wed, Sep 4 - Thu, Sep 12
10:35 am - 9:05 pmICN-STL
24h 30m2 stops
4:10 pm - 5:25 pmSTL-ICN
35h 15m1 stop
$1,397
Find Deal
Wed, Oct 16 - Mon, Oct 28
10:35 am - 9:05 pmICN-STL
24h 30m2 stops
12:00 pm - 4:25 pmSTL-ICN
38h 25m1 stop
$1,421
Find Deal
Wed, Jul 3 - Wed, Jul 17
7:40 pm - 9:52 pmICN-STL
16h 12m1 stop
6:06 am - 3:20 pmSTL-ICN
19h 14m1 stop
$1,667Korean Air
Find Deal
Sun, Jun 2 - Thu, Jun 20

Flights from Incheon to St. Louis - Travel Insights & Trends

Get data-powered insights and trends into flights from Incheon to St. Louis to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Incheon to St. Louis?

The average price of all flights from Incheon Intl Airport to St. Louis clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to St. Louis on a Thursday and more expensive on a Sunday. On your return trip to Incheon, you should consider flying back on a Wednesday, and avoid Tuesdays for better deals.

Which airlines provide the cheapest flights from Incheon to St. Louis?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The cheapest return flight ticket from Incheon to St. Louis found by KAYAK users in the last 72 hours was for $1,179 on Air Canada, followed by Delta ($1,184). One-way flight deals have also been found from as low as $859 on Air Canada and from $1,004 on Korean Air.

Good to know

Low season

October

High season

September

Cheapest flight

$588
Best time to beat the crowds with an average 34% drop in price.
Most popular time to fly and prices are also 21% lower on average.
Flight from Incheon to St. Louis

When to book flights from Incheon to St. Louis

Are your dates flexible? Find out the best times to travel from Incheon to St. Louis based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Seoul Incheon Airport to St. Louis flights

  • What is the cheapest flight from Incheon Intl Airport to St. Louis?

    In the last 3 days, the lowest price for a flight from Incheon Intl Airport to St. Louis was $588 for a one-way ticket and $1,179 for a round-trip.

  • Do I need a passport to fly between Incheon and St. Louis?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Incheon and on arrival in St. Louis.

  • Which aircraft models fly most regularly from Incheon to St. Louis?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Incheon to St. Louis?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Incheon and St. Louis, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Incheon to St. Louis, Korean Air or Delta?

    The two airlines most popular with KAYAK users for flights from Incheon to St. Louis are Korean Air and Delta. With an average price for the route of $1,482 and an overall rating of 8.5, Korean Air is the most popular choice. Delta is also a great choice for the route, with an average price of $1,408 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from Incheon to St. Louis?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Incheon to St. Louis.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Incheon to St. Louis?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Incheon is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Incheon to St. Louis?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to Incheon with another airline. Booking your flights between Incheon and STL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Incheon to St. Louis?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from Incheon up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 3 airlines serving from Incheon to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from Incheon to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Incheon to St. Louis? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.5
Korean AirOverall score based on 1175 reviews
8.2Entertainment
8.2Food
8.3Comfort
8.6Boarding
8.8Crew
Airline reviews

The flight crews were extremely professional helpful and courteous. Departure and arrival times were accurate. No delay. Thanks

10.0 ExcellentAnonymous, Apr 2024ICN - SGN
Read more about Korean Air reviews

The flight crews were extremely professional helpful and courteous. Departure and arrival times were accurate. No delay. Thanks

Not very comfortable seated in the back plane due to turbulence

Everything about Korean air is great, hands down! Will always prefer this airline from other carriers.

Ford not that great the seat not to big for leg room like other airline

Crew was ok, but some passengers were a bit rude. Again, all outlets were not working, only the really slow charging usb plug on the entertainment system. Entertainment system was also bugged, some features just crash, the touch screen wasn't working and when trying to watch a movie the onscreen display kept flashing off and on making it very difficult to watch.

New plane. Perfect gluten free meal Very flawless procedures from check-in to the landing. Taking off on time and landing even earlier and the luggages are already there after shortest arrival report.

It was ok. Not good and not a bad experience

not too bad but not too great either. Service on all airlines declined ever since covid. Your Delta Stewardess are not that friendly at all. :-(

I like your stewardess, they are nice. However, your food could have been better and wheres your dessert? You do not offer beer or scotch. I do not drink alcohol biut my husband can have one or two, he has to ask if he can have one. during dinner or lunch, it should be offerred. Also, you do not have the most famous drinks ginger ale

Not accommodating ground staff On board slow service Crew members not very friendly

Absolutely nothing flight was cancelled and delayed for 2 days. Barely a heads up I want a full refund

The plane from SNA wouldn’t start after 5 tries. The team gave me an option of flying direct from LAX and giving me a Lyft ride there! Perfect!

Best airline! Always friendly and welcoming. Skyclub was great and loved the fast free wifi on board. I also love that you can pre-order your meal on the app!

Atlanta boarding crew at gate were filled with arrogance and were disrespectful. In flight crew showed indifference to the needs of passengers. This is about the flight from ATL to BDL.

The boarding was horrible. You couldn’t hear the announcements at all. Probably because there is so much in the area for businesses. They need a louder PA system. Other than that it was a good Delta experience.

Boarding was somewhat chaotic. Unable to evaluate crew or food/drink because captain kept them seated due to turbulence. Have no idea if entertainment was offered.

The gate area was incredibly short staffed, with one representative manning 4-5 flights, which caused a 3 hr delay in boarding even though the plane was all ready to leave. Other flights also were delayed because of this. The flight crew was awesome and I feel bad for the only gate worker on call, but Delta needs to hire more employees.

Very frustrated with boarding gate crew. She announced the plane was small and they would be limiting us to one item to carry on. Not a problem for me as I understand the tiny planes have limited space!! Not the case here! It was a rather large plane and had plenty of room for bags! So because I don’t want to be one of “those people” who ignores the request to check a carry on I did so asking if I would be able to pick it up at the bottom of the ramp on arrival in Knoxville to which she responded “yes”! Then I watched as every other passenger held onto their 2 items and boarded!! Then when we arrived in Knoxville our 2 carry ons had been put with all the other luggage and we had to go to baggage pick up and wait for all the big checked bags to come off the carousel! So she lied!! Frustrating. Next time I won’t be so nice!

Everything was great. The big planes could still stand to have a bit more leg room. Crew was amazing!!

It was a good experience except when boarding a female flight attendant did not go out of her way to assist my teenage daughters in finding space for their carry-ons after their compartments were full.

Liked - nothing. Disliked - delayed 35+ min sitting on the plane. Caused me to miss my connection in Charlotte. American Airlines is the worst US Air Carrier company with atrocious customer service.

Worst situation ever! I booked my tickets for this trip on Alaska Airlines. I guess AA is a partner and we flew nonstop from Eugene to PHX on an AA jet. I had to pay for luggage from PHX to EUG. And this was an Alaska Airlines reservation paid for with Alaska airlines credit card! Got to the PHX airport and was not able to check bags because of some weird issue with the AA software. My reservation had to be the-entered by the agent. I will never pick another American Airlines flight on the Alaska Airlines website. While on vacation, I tried to upgrade our seats for the trip home. The request just buffered and never went through. I tried four times and was charged four times on my credit card. The card was charged but the seats were never changed. What a wreck!

Left from gate 30 minutes before flight. Never been late to a flight ever. It says 15 minutes before explicitly on the ticket.

I like the boarding process, it was fast. The seat doesn’t have a TV for a long flight and food wasn’t served, just snacks.

Left on time. Arrived early. Turbulence coming in and gate not open due to early arrival but expected.

Use planes with TVs on flights over 4 hours. The free entertainment was a cheap in between solution for a very long flight that you don't even bother providing meals or decent snacks.

Even though we left CMI late, we mostly made up the time.

Delayed almost 4 hours for a 45 minute flight with no explanation.

Again, multiple delays and I eventually just canceled and drove!

Great crew. We were delayed so that late passengers could get on the flight. Love the bedding in business class. Good food. Great experience.

Book cheap flights from Incheon to St. Louis

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Incheon to St. Louis found on KAYAK in the last 72 hours.
6/12Wed
2 stops
35h 02mICN-STL
$588
5/27Mon
2 stops
50h 48mICN-STL
$604
5/27Mon
3 stops
50h 11mICN-STL
$718
6/25Tue
2 stopsAir Canada
35h 21mICN-STL
$859
5/27Mon
1 stopKorean Air
16h 12mICN-STL
$1,004
6/12Wed
1 stopKorean Air
16h 15mICN-STL
$1,019
7/12Fri
2 stopsUnited Airlines
24h 41mICN-STL
$1,095
7/18Thu
2 stopsAir Canada
35h 21mICN-STL
$1,211
8/6Tue
2 stopsUnited Airlines
37h 38mICN-STL
$1,227
8/11Sun
2 stopsDelta
22h 01mICN-STL
$1,419

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Last minute flights from Incheon to St. Louis

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Incheon to St. Louis that are departing in the next 10 days.
5/17Fri
multi-stopKorean Air
16h 12mICN-STL
5/24Fri
multi-stopKorean Air
20h 50mSTL-ICN
$1,763
5/18Sat
multi-stopLufthansa
39h 05mICN-STL
6/22Sat
multi-stopLufthansa
26h 24mSTL-ICN
$1,819
5/18Sat
multi-stopLufthansa
41h 21mICN-STL
6/22Sat
multi-stopLufthansa
32h 17mSTL-ICN
$1,824
5/18Sat
multi-stopKorean Air
16h 12mICN-STL
6/22Sat
multi-stopKorean Air
19h 14mSTL-ICN
$1,941
5/17Fri
multi-stopQatar Airways
35h 59mICN-STL
6/22Sat
multi-stopQatar Airways
34h 50mSTL-ICN
$2,071
5/17Fri
multi-stop
19h 44mICN-STL
5/24Fri
multi-stop
36h 59mSTL-ICN
$2,223
5/17Fri
multi-stopLufthansa
63h 50mICN-STL
5/24Fri
multi-stopLufthansa
50h 24mSTL-ICN
$2,314
5/16Thu
multi-stopQatar Airways
35h 59mICN-STL
5/24Fri
multi-stopQatar Airways
34h 27mSTL-ICN
$2,897

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Incheon - St. Louis Flights

Departure:

Seoul Incheon Airport (undefined)South Korea

Destination:

St. Louis (STL)United States

Return flight deals:

St. Louis - Seoul Incheon Airport

Cabin classes: