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STL - ICN

Find cheap flights from St. Louis to Seoul Incheon Airport from $666

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Incheon departing on 9/2. 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
ds. 5/25
ds. 6/1

Search hundreds of travel sites at once for deals on flights to Seoul Incheon Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Incheon, 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 St. Louis to Incheon, as well as popular online travel agencies
In the last 7 days travelers have searched 44,979,812 times on KAYAK, and here is why:

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

Track pricesNot ready to book? Create a price alert for when prices drop.

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

Bundle and saveSave money when you bundle your flight + hotel.

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

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Incheon 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
2:34 pm - 11:00 amSTL-ICN
30h 26m2 stops
7:45 pm - 1:27 pmICN-STL
32h 42m2 stops
$1,356
Find Deal
dt., set. 10 - dj., nov.. 14
12:00 pm - 4:05 pmSTL-ICN
38h 05m2 stops
8:10 pm - 3:23 pmICN-STL
34h 13m1 stop
$1,402Air Canada
Find Deal
dt., set. 10 - dj., nov.. 14
6:30 am - 5:20 pmSTL-ICN
20h 50m1 stop
10:35 am - 1:08 pmICN-STL
16h 33m1 stop
$1,427Delta
Find Deal
dg., maig 5 - dg., maig 19
6:00 am - 2:25 pmSTL-ICN
18h 25m1 stop
10:35 am - 9:17 pmICN-STL
24h 42m1 stop
$1,428Delta
Find Deal
dj., ag. 15 - dj., set. 5
4:36 pm - 4:20 amSTL-ICN
21h 44m2 stops
4:50 pm - 9:52 pmICN-STL
19h 02m2 stops
$1,432United Airlines
Find Deal
dj., ag. 15 - dj., set. 5
7:01 am - 3:15 pmSTL-ICN
18h 14m1 stop
5:25 pm - 10:59 pmICN-STL
19h 34m1 stop
$1,487American Airlines
Find Deal
dg., maig 5 - ds., maig 18
6:00 pm - 4:20 amSTL-ICN
20h 20m1 stop
11:30 am - 5:03 pmICN-STL
19h 33m1 stop
$1,528United Airlines
Find Deal
dv., ag. 30 - dv., set. 6
5:54 am - 3:15 pmSTL-ICN
19h 21m1 stop
5:25 pm - 12:03 pmICN-STL
32h 38m1 stop
$1,788American Airlines
Find Deal
dc., ag. 7 - dv., ag. 16
6:11 am - 3:20 pmSTL-ICN
19h 09m1 stop
7:40 pm - 9:36 pmICN-STL
15h 56m1 stop
$2,290Korean Air
Find Deal
dj., maig 16 - dv., jul.. 19
6:11 am - 3:20 pmSTL-ICN
19h 09m1 stop
7:40 pm - 9:55 pmICN-STL
16h 15m1 stop
$2,374Korean Air
Find Deal
dc., maig 22 - dv., juny 7

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

Get data-powered insights and trends into flights from St. Louis to Incheon 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 St. Louis to Incheon?

The average price of all flights from St. Louis to Incheon Intl Airport clicked on KAYAK for each day over the last 12 months.
When flying from St. Louis to Incheon, you should consider leaving on a Wednesday and avoid Saturdays if you are looking for the best rates. For your return to St. Louis, you’ll find the best rates on Thursdays and the most expensive ones on Sundays.

What is the cheapest month to fly from St. Louis to Incheon Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from St. Louis to Incheon Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from St. Louis to Incheon Intl Airport is January, where tickets cost $1,306 on average. On the other hand, the most expensive months are December and May, where the average cost of tickets is $2,737 and $2,208 respectively.

How far in advance should I book a flight from St. Louis to Incheon Intl Airport?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from St. Louis to Incheon Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from St. Louis to Incheon Intl Airport, you should book around 4 days before departure. For the absolute cheapest price, our data suggests you should book 24 days before departure.

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

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The best deals for a one-way ticket found by KAYAK users over the last 3 days were on American Airlines ($858) and Air Canada ($918). The cheapest round-trip tickets were found on Air Canada ($1,402) and Delta ($1,427).

Good to know

Low season

January

High season

November

Cheapest flight

$666
Best time to beat the crowds with an average 27% drop in price.
Most popular time to fly and prices are also 6% lower on average.
Flight from St. Louis to Incheon

When to book flights from St. Louis to Incheon

Are your dates flexible? Find out the best times to travel from St. Louis to Incheon 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 St. Louis to Seoul Incheon Airport flights

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

    In the last 3 days, the lowest price for a flight from St. Louis to Incheon Intl Airport was $666 for a one-way ticket and $1,356 for a round-trip.

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

    A passport is required to fly from St. Louis to Incheon.

  • Which airports will I be using when flying from St. Louis to Incheon?

    St. Louis and Incheon are both served by 1 main airport. You will leave St. Louis from Lambert-St Louis and will be arriving at Incheon Intl.

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from St. Louis to Incheon are Korean Air and Delta. With an average price for the route of $1,940 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 $1,631 and an overall rating of 8.0.

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

    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 St. Louis to Incheon.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Incheon from St. Louis 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 St. Louis to Incheon?

    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 Incheon with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and ICN 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 St. Louis to Incheon?

    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 Incheon from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 5 airlines serving from St. Louis to Incheon

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Incheon. 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 St. Louis to Incheon? 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
8.2food
8.8crew
8.2entertainment
8.6boarding
8.3comfort
Airline reviews

The flight crews were extremely professional, helpful, and courteous. Departure and arrival times were accurate. No delay. I will use K airline again. Thanks

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

The flight crews were extremely professional, helpful, and courteous. Departure and arrival times were accurate. No delay. I will use K airline again. Thanks

We were seated at the back and that was very uncomfortable for me with the turbulence we experienced on our way to Chicago.

I enjoyed flying on Korean Air. The service was great and the food was yummy. They served white fish.

I enjoyed flying on Korean Air. The service was great and the food was yummy, especially the bibimbap and cold spicy noodles. The only thing that bummed me out on this red-eye flight was that my seat did not properly recline so I was not able to sleep.

On time and flight crew are always so happy to help and always smiling unlike other airlines.

Great crew, decent food Charging plugs were broken on both seats next to me. Only the USB port was available, and that charges, very, very slowly. Seat was also broken, it would not lock into position when reclining.

Korean Air had great service and the Bibimbap dish was the best airplane food I’ve ever had. It was a long flight so in between the two meals they served customers could get Shin ramen. The flight attendants let my children use a pair of nice headphones for the flight and had earbuds and slippers for all the adults. The flight was long but the time passed by relatively quickly because they have many great shows in their entertainment TV. I watched the BTS Love Yourself and Speak Yourself concerts 💜

Stewardess are nice. Food could have been better and should have a better dessert. They do not offer scotch or beer. You have to ask for it. I also was not happy that you do not serve ginger ale and or cranberry juice. This is my first time that an international flight do not have this. I go home overseas every year and when I travel through ANA, Delta, Qatar, JAL, Asiana Air, United Air. they all serve this two very famous drink. You do not have a great snack tray.

You did not put me on a Korean Air flight! so I do not have nothing to say

Wonderful cabin crew!!!!! Food was poor, in flight entertainment was just ok. They need to serve more water on a 15 hour flight--we were dehydrated and kept asking for water.

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.

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.

They did a fine job. Can't wait to use Delta in the future.

There was a loud squeaky sound the whole time we were flying.

Had a broken tray in business class. Crew just shrugged it off.

Due to one crew member not showing up to work, our flight was significantly delayed causing us to miss our connecting flight in Houston to Mississippi causing us to be delayed by more than 6 hours and missing our event all together. Very disappointing. All because ONE crew member called in sick. United did grant us a $15 meal voucher, which was a small but appreciated concession that I wasn’t able to use because I ordered my lunch and paid for it before applying the concession, and the staff said it was too late to use it. Ugh! We also had a TWO delay coming back from Mississippi, but that was on American Airlines and it was due to weather, so not their fault. Anyway, not at all impressed with United’s handling of our flight and the HUGE disappointment of missing our important family event for our 90 year old mother. All that money and all that stress and emotions for nothing. Having to wait the hour to bring an employee from LAX seemed like something that should not have happened. Why don’t you have a local back-up? Santa Ana is not a little airport in a rural area.

Flight delayed from Cape Town to Washington then got diverted to miami and in miami we had to fend for ourselves , im still trying to get to Shreveport now

delay several times and wait extra long to board. no entertainment service because there are problem for some rows. always encounter some delays for the last flight of the day.

I just wrote a text which was supposed to be for the flight from Denver to spokane not Frankfurt to Denver.

On time every leg of the journey and exceptional staff at counter, gate, and on board. I haven’t travelled in US for a long time and was genuinely surprised how pleasant this was.

Hated every minute of it. This flight should have only taken 1.5hrs but was delayed over 10hours. Now I am being told I cannot be compensated or refunded my ticket price or extra leg room, which I purchased but did not receive, because the airline is throwing the blame on the 3rd party I purchased tickets through and 3rd party putting the blame on airline. No one wants to help. They received their money and that's all they care about. Im going on 3 days of still trying to get to my final destination, had to cancel car rental, car insurance and hotel. Currently staying in airport until hotels open up. Thank you Lufthansa, Kayak, Underpricer and United for making this trip the worst ever.

The delays (5 hrs) were a comedy of errors, and the multiple safety issues encountered were very concerning.

flight delays, staff only communicating when pushed, food service lasting a grand total of 7 minutes, stuck in seat from 45mins into flight until landing

Crew was great and did their best to make us comfortable and captain came out at the beginning to announce why the flight was delayed, weather situation up ahead, and kept us updated throughout the flight.

the flight from Tampa departed with a delay. The food on board was poor, usually on international airlines alcoholic beverages are offered free of charge , but here it was for a fee, the cutlery was wooden, there were no hot drinks (tea, coffee). Unfortunately, I didn't take pictures of the portions of food, but it wouldn't have been enough for a child either.And in the future, I will try not to use the services of this airline

Just get Economy Plus for international flights, so worth it the extra room, bigger seats…

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

It was spectacular. I had basic Economy and was given so much space and their seats lean back so far. Staff was superb, food was superb, everything was superb, Finnair is Fantastic.

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

Cold air blew constantly on my legs almost making me numb.

The flight was very uncomfortable and there was no snacks served for the 13 hours international flight. In addition, the flight was delayed 3 hours

Due to a strike taking place with the airline, it negatively impacted my flight in multiple ways. My flight was delayed over 2 hours and the food served was mediocre at best.

Cabin crew were great. Seats are criminal for tall people

Flight was delayed 1.5 hrs due to problem with a previous flight to mine; I was informed appropriately via Text & Email, however, website did not keep up with messages sent by nearly an hour. When checking-in warm & friendly reception at check-in desk until female Air Canada Rep noticed my flight number and instantly pivoted to a condescending & sarcastic comments about getting my bag checked in since I’m running so late; then tone instantly changed again few minutes later when she muttered, “Oh, they’ve delayed it” another sign systems & worse front line staff, not fully informed or simply not reading their flight status updates. Flight crew were very friendly & did a great job trying to make up lost time due to the delay.

It was great, love the experience and will definitely recommend 👌. Communication was great

My flight was great! Gate attendants and crew were great… pleasant and in good spirits. Flight delayed several hours and we were well informed of the status while on plane. Thank you!

The fact that I got to Toronto alive and well and safe is a huge plus. I thank the captain and crew for a safe flight The comfort of the aircraft leaves much to be desired. Human beings should not have to be that cramped and squashed on a flight that we pay a lot for and even have to pay for lousy food choices The cabin crew were pleasant and helpful Kudos to them as the flight was packed to capacity and there was a lot of work for them in a short space of time All in all a good experience, but too cramped

It was great to check carryon luggage at no charge when there was no room for ours. A hidden benefit of having low-tier tickets. Also great to stay off plane as long as possible. Airline gave us seats we wanted on this last leg, again at no charge.

Fresh fuit or veg snacks would be so great, but there are two good restaurants in Denver airport. Try Etais UDIS or Freshens DIA for nutritious delicious pita sandwiches/ donairs and crepes in Freshens.

The late departure Of two hours waitresses, immature, and gossiping

Book cheap flights from St. Louis to Incheon

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from St. Louis to Incheon found on KAYAK in the last 72 hours.
9/2dl.
3 stops
35h 05mSTL-ICN
$666
9/11dc.
3 stops
41h 24mSTL-ICN
$698
7/16dt.
2 stopsAmerican Airlines
31h 29mSTL-ICN
$858
7/16dt.
1 stopAmerican Airlines
19h 53mSTL-ICN
$859
9/2dl.
2 stopsAir Canada
39h 30mSTL-ICN
$918
9/2dl.
1 stopKorean Air
20h 50mSTL-ICN
$965
7/2dt.
2 stopsTurkish Airlines
34h 10mSTL-ICN
$989
7/10dc.
1 stopAir Canada
38h 25mSTL-ICN
$998
7/10dc.
2 stopsAir Canada
34h 20mSTL-ICN
$1,004
6/1ds.
1 stopKorean Air
19h 09mSTL-ICN
$1,318

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Last minute flights from St. Louis to Incheon

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 St. Louis to Incheon that are departing in the next 10 days.
4/29dl.
multi-stopDelta
22h 39mSTL-ICN
5/19dg.
multi-stopDelta
16h 12mICN-STL
$1,427
4/30dt.
multi-stopDelta
20h 17mSTL-ICN
5/19dg.
multi-stopDelta
19h 26mICN-STL
$1,431
4/30dt.
multi-stopAmerican Airlines
18h 14mSTL-ICN
5/13dl.
multi-stopAmerican Airlines
16h 03mICN-STL
$1,487
4/30dt.
multi-stopAmerican Airlines
31h 50mSTL-ICN
5/13dl.
multi-stopAmerican Airlines
16h 03mICN-STL
$1,491
4/30dt.
multi-stop
34h 16mSTL-ICN
5/13dl.
multi-stop
46h 07mICN-STL
$1,533
4/30dt.
multi-stop
29h 11mSTL-ICN
5/17dv.
multi-stop
41h 02mICN-STL
$1,583
4/29dl.
multi-stop
19h 07mSTL-ICN
5/14dt.
multi-stop
16h 12mICN-STL
$1,629
4/30dt.
multi-stopQatar Airways
32h 58mSTL-ICN
5/3dv.
multi-stopQatar Airways
32h 09mICN-STL
$2,849
4/30dt.
multi-stopQatar Airways
49h 18mSTL-ICN
5/3dv.
multi-stopQatar Airways
32h 09mICN-STL
$2,852
4/29dl.
multi-stopAir Canada
33h 05mSTL-ICN
5/17dv.
multi-stopAir Canada
34h 16mICN-STL
$8,314

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St. Louis - Incheon Flights

Departure:

St. Louis (STL)United States

Destination:

Seoul Incheon Airport (ICN)South Korea

Return flight deals:

Seoul Incheon Airport - St. Louis

Cabin classes: