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ICN - STL

Find cheap flights from Seoul Incheon Airport to St. Louis from $1,004

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 8/7. 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
Sat 5/25
Sat 6/1

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 45,119,101 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

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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
7:40 pm - 9:31 pmICN-STL
15h 51m1 stop
3:30 pm - 3:20 pmSTL-ICN
33h 50m1 stop
$1,154Delta
Find Deal
Fri, Oct 11 - Tue, Oct 15
7:40 pm - 9:50 amICN-STL
28h 10m1 stop
3:30 pm - 3:20 pmSTL-ICN
33h 50m1 stop
$1,155Delta
Find Deal
Fri, Oct 11 - Tue, Oct 15
10:35 am - 5:59 pmICN-STL
21h 24m2 stops
6:00 am - 5:20 pmSTL-ICN
21h 20m2 stops
$1,199Delta
Find Deal
Fri, Oct 11 - Tue, Oct 15
7:40 pm - 9:29 pmICN-STL
15h 49m1 stop
6:30 am - 3:20 pmSTL-ICN
18h 50m1 stop
$1,227Korean Air
Find Deal
Thu, Sep 5 - Wed, Sep 11
11:30 am - 4:22 pmICN-STL
18h 52m2 stops
5:34 pm - 4:20 amSTL-ICN
20h 46m2 stops
$1,237United Airlines
Find Deal
Fri, Oct 11 - Tue, Oct 15
6:00 pm - 3:20 pmICN-STL
35h 20m2 stops
12:00 pm - 4:05 pmSTL-ICN
38h 05m2 stops
$1,242Air Canada
Find Deal
Fri, Sep 6 - Thu, Sep 12
6:00 pm - 3:20 pmICN-STL
35h 20m2 stops
4:05 pm - 5:30 pmSTL-ICN
35h 25m1 stop
$1,270Air Canada
Find Deal
Fri, Sep 6 - Thu, Sep 12
4:35 pm - 6:34 pmICN-STL
15h 59m1 stop
6:30 am - 3:20 pmSTL-ICN
18h 50m1 stop
$1,312
Find Deal
Fri, Sep 6 - Thu, Sep 12
7:40 pm - 9:52 pmICN-STL
16h 12m1 stop
6:11 am - 3:20 pmSTL-ICN
19h 09m1 stop
$1,402
Find Deal
Mon, May 20 - Fri, May 31
7:40 pm - 9:52 pmICN-STL
16h 12m1 stop
6:30 am - 5:20 pmSTL-ICN
20h 50m1 stop
$1,616Korean Air
Find Deal
Mon, May 20 - Mon, May 27

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 Saturdays 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 $1,154 on Delta, followed by Korean Air ($1,227). One-way flight deals have also been found from as low as $1,110 on Air Canada and from $1,237 on Korean Air.

Good to know

Low season

November

High season

September

Cheapest flight

$1,004
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly and prices are also 14% 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 $1,004 for a one-way ticket and $1,154 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 $1,497 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 1192 reviews
8.6boarding
8.3comfort
8.2food
8.2entertainment
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

Made the Atlanta to Pittsburgh trip many times, with Delta no issues

I always fly with Delta. My friends tell me their horror stories of flying with other airlines. I just smile and say, “You should fly Delta”

I'm a larger, athletic guy (6'2", 260lbs powerlifter) and I found the seats incredibly uncomfortable with minimal leg room, especially in a window seat. Now, I full understand that being smaller may change my view but even if I was 80lbs less, my legs would be the same size and I was sandwiched between my seat and the seat in front of me.

Horrible. This was not first class. This was a connecting flight whi h was late. My original flight never came. I hated the fact that delta gave me a connecting flight from New York to Orlando Florida. No meals and the television screens were not working. There wasn't even any power to charge your phones. This is NOT FIRST CLASS DELTA!!! Do better next time!

This flight was ridiculous. I had to have a connecting flight from New York to orlando Florida??? The flight left late and because it was a short flight there was no first class amenities. I had one alcohol drink. The flight crew was fine, but it sure did not feel like first class. Delta to me dropped the ball by giving me a connecting flight. By the time we got to Raleigh we would have missed the next flight. Lucky for me the flight never came so now I was stuck waiting for a later flight that came in late also.

Our flight was delayed in Atlanta. The staff could have gave us an explanation for the delay and how long it would be.

I liked the ease of checking in, luggage check in, wheel chair assistance, boarding and flight.

Flight was delayed an no one make an announcement about it., they only have Coca Cola and nothing else., the food that was served was cold… very bad experience and service

On my way home I had a layover. The flight from ATL to CLT was amended 5x while I was waiting. I could have driven home sooner. Overall from Dallas, Tx to Charlotte, NC I started my trip at 4:30pm, I didn’t get home until past midnight. I know things happen, but 5x to make me run back and forth in an airport from different terminals is excessive. I also upgraded to comfort + , I didn’t feel it was worth it. There was no benefit

On my way home I had a layover. The flight from ATL to CLT was amended 5x while I was waiting. I could have driven home sooner. Overall from Dallas, Tx to Charlotte, NC I started my trip at 4:30pm, I didn’t get home until past midnight. I know things happen, but 5x to make me run back and forth in an airport from different terminals is excessive.

A disaster, I lost my connection due to overcrowding at the Miami airport, having a 3-hour layover and the airline did nothing to reboard me on time and I had to sleep on the floor for 18 hours.

The food has never improved. It will never improve. But when I'm boarding a flight in priority boarding and I've spent 10 hours inside the security area of the airport and I get "randomly" selected for additional screening as I board the plane when the flight has already been delayed, and I work as a military contractor that has been issued visas direct from JMOD, I find it ridiculous. I would never recommend anyone to use AA on international flights. JAL is a better airline with older planes. The flight attendants on international hauls on American also have a chip on their shoulder and really dont deliver the same level of service code share partners do.

The flight was 90 minutes long and the stewardesses were extremely slow. I was in row 16 and they did not serve us drinks until we were descending for landing in a 90 minute flight. Unacceptably slow and at least 10 rows (20 to 31) did not receive any drinks or snacks for the entire duration of the flight because of the slowness of the stewardesses. There is no rationale to delay beverage service to brew coffee for a flight at six p m.

This flight is frequently delayed. The connections seemingly are more frequently delayed. I’ve missed connections as a result twice on the same route to charlotte then Charleston. Final destination arrival has been the next day, twice in a row. No pilots, no crew. Too many excuses. Unfortunately, my days with American are over.

Entertainment was okay not because anything was wrong but it is a short flight so having no wifi is annoying but understandable. Crew was outstanding as usual

Those seats were way too narrow. I had the middle seat, one person was a very skinny person and we still couldn’t avoid touching each other anytime one of us moved. The other person was larger and we were basically sitting in each others lap the entire flight. There was zero entertainment. The flight was long enough to justify tvs, but no. Gotta sit there in your infant seat and twiddle your thumbs.

The Flight attendant had an attitude and didn't allow anyone any time to prepare for landing despite being absent throughout the entire trip

Flight boarded without pilots. Sat on plane for 3 hrs. after over an hour late boarding. Plane never took off. Had to deplane near midnight. Line for rebooking was 3 hours + long. I had to leave.

The flight was great but board was a nightmare. The gate was changed 4 times during the layover period

The experience was great and much better than the flight going out. of course I was in first class but the service was excellent

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.
8/7Wed
3 stops
47h 33mICN-STL
$1,004
7/18Thu
2 stopsAir Canada
35h 21mICN-STL
$1,110
7/18Thu
2 stopsAir Canada
35h 21mICN-STL
$1,132
7/15Mon
1 stop
15h 57mICN-STL
$1,201
8/8Thu
1 stopKorean Air
15h 49mICN-STL
$1,237
8/8Thu
2 stops
21h 46mICN-STL
$1,382
7/15Mon
2 stopsAir Canada
35h 21mICN-STL
$1,396
8/7Wed
2 stopsQatar Airways
34h 15mICN-STL
$1,590
7/14Sun
2 stopsQatar Airways
45h 52mICN-STL
$1,606
7/18Thu
1 stopLufthansa
39h 05mICN-STL
$1,910

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Incheon - St. Louis Flights

Departure:

Seoul Incheon Airport (ICN)South Korea

Destination:

St. Louis (STL)United States

Return flight deals:

St. Louis - Seoul Incheon Airport

Cabin classes: