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STL - ICN

$778 Find cheap flights from St. Louis to Seoul Incheon Airport

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 7/2. 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
Mon 6/17
Mon 6/24

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 41,904,688 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 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
8:04 am - 3:15 pmSTL-ICN
17h 11m1 stop
5:25 pm - 10:24 pmICN-STL
18h 59m1 stop
$1,268American Airlines
Find Deal
Tue, Aug 27 - Tue, Sep 10
7:24 am - 4:25 pmSTL-ICN
19h 01m1 stop
6:35 pm - 8:09 amICN-STL
28h 34m2 stops
$1,271American Airlines
Find Deal
Tue, Oct 29 - Tue, Nov 5
4:10 pm - 4:00 pmSTL-ICN
33h 50m2 stops
6:45 pm - 9:53 amICN-STL
30h 08m2 stops
$1,290Air Canada
Find Deal
Tue, Oct 29 - Tue, Nov 5
12:00 pm - 4:25 pmSTL-ICN
38h 25m1 stop
7:05 pm - 9:05 pmICN-STL
40h 00m2 stops
$1,335Air Canada
Find Deal
Sun, Sep 1 - Sat, Sep 7
6:00 am - 2:25 pmSTL-ICN
18h 25m1 stop
7:40 pm - 9:31 pmICN-STL
15h 51m1 stop
$1,428Delta
Find Deal
Thu, Sep 5 - Thu, Sep 12
6:00 am - 5:20 pmSTL-ICN
21h 20m2 stops
7:40 pm - 9:31 pmICN-STL
15h 51m1 stop
$1,432Delta
Find Deal
Thu, Sep 5 - Thu, Sep 12
5:30 pm - 4:20 amSTL-ICN
20h 50m2 stops
4:50 pm - 4:28 pmICN-STL
37h 38m2 stops
$1,607United Airlines
Find Deal
Thu, Aug 8 - Fri, Aug 16
3:10 pm - 4:20 amSTL-ICN
23h 10m2 stops
11:30 am - 10:11 pmICN-STL
24h 41m2 stops
$1,673United Airlines
Find Deal
Tue, Jul 30 - Thu, Aug 8
6:30 am - 5:20 pmSTL-ICN
20h 50m1 stop
7:40 pm - 10:07 pmICN-STL
16h 27m1 stop
$2,339Korean Air
Find Deal
Thu, Jul 4 - Mon, Jul 15
6:06 am - 3:20 pmSTL-ICN
19h 14m1 stop
7:40 pm - 10:07 pmICN-STL
16h 27m1 stop
$2,561Korean Air
Find Deal
Sat, Jul 6 - Sun, Jul 14

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 $1,283 on average. On the other hand, the most expensive months are December and July, where the average cost of tickets is $2,279 and $1,829 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 2 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 ($778) and Air Canada ($892). The cheapest round-trip tickets were found on American Airlines ($1,268) and Air Canada ($1,290).

Good to know

Low season

January

High season

April

Cheapest flight

$778
Best time to beat the crowds with an average 24% drop in price.
Most popular time to fly and prices are also 3% 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 $778 for a one-way ticket and $1,268 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 oneworld 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 $1,960 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 1168 reviews
8.6Boarding
8.2Entertainment
8.8Crew
8.3Comfort
8.1Food
Airline reviews

Overall, very uneventful and pleasant experience. Most importantly, no delays.

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

Overall, very uneventful and pleasant experience. Most importantly, no delays.

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

The Flight crew didn’t serve us until about 1.5 hours into the flight because of turbulence but after it ended it was fine to move around. They served us water only and snacks and then NEVER, NOT ONE TIME came through to collect trash until right before landing about 1.5 hours later. There was absolutely no need for that. They crew was just standing around talking and visiting with each other and really never tried to see if we might want something besides water or even try to come pick up trash. This is VERY unusual for a Delta flight but it was not what I would have expected for a 4 hour flight.

The 1st class male crew member was very pleasant - the short female with round glasses , maybe in 50’s had no personality- never spoke when delivering my food, drink, & never smiled the whole trip! In fact looked annoyed when the boarding proses was happening- I would never hire this woman - unfriendly . Have never dealt with a crew member like her-

5-hour delay due to storms in Tanoa and airspace restricted by Miami traffic controllers.

A regional sized plane was used for a cross country flight with no overhead bin space. I had to "pink check" my laptop and my medications. I was NOT pleased!!!!

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 plane was FREEZING SEATS UNCOMFORTABLE Otherwise smooth Thank you

Boarding was chaotic. I didn’t finish dinner because I went to bed early. Breakfast omelet was overcooked and tasteless but croissant was better than usual. Plane was dirty—crumbs in every seam and lavatory was poorly maintained (paint peeling, etc.) and toilet paper had not been refreshed before takeoff. No cubby for storage in first and seat was narrow.

An hour and a half late is UNACCEPTABLE. The negative impact to our family is unconscionable. And for the price we were forced to pay...

Standard flight experience, but there is only power at the seat to row 20 on the aircraft, on my initial check in it did not say that was the case

Not a fan of the diagonal partially enclosed business class seats or how they have to be converted to beds manually by crew. I prefer more isolation and user control for switching to lie flat.

No lounge access with “United First” ticket. False alarm about late flight, jeopardizing connection. Wrong meal. Loose power socket would not hold plug, could not charge device. In-flight access to text messaging did not work. Toilet seat on plane would not stay up.

We ended up with seats in the very back. So they did not recline. Have no idea why, we reserved and checked in very early. The isles were very narrow and the seats had very little leg room. But they did give us water, and a snack.

Energetic crew - flight full of swiftied going to Taylor's opening show in Paris! Long lines for bathroom made out kind of suck though

Check in etc was very good. As for on the plane, it was like flying in a freezer. It was so cold, i have flown for years and never been so cold on a plane. Staff on board said its always cold when flying which is a load of rubbish. They wouldnt put any heating on and now i have the flu because of this .

I’ve had a couple flights this week on United that were delayed by an hour or more

Flight was delayed 2.5 hours - a big deal on an overnight when you plan to sleep.

I feel like they have upgraded the app since I last flew United and I found it to be super helpful. I had stopped flying United unless absolutely necessary and my experience on this trip indicates they have been working hard to improve their services.

The preferred seats where awful. Impossible to use them again

The flight was short. However, my bag was delayed and was put on another flight.

Flight attendant was incredible. Very efficient, friendly and pleasant. Patricia was one of the best I have ever seen. Please give her a big raise!

Delayed multiple times. Boarding was ok but getting off the aircraft was a mess. So disorganized with staff trying to help the elderly but completely blocking path for anyone else to move. Bathroom was disgusting, probably caused by one of the customers but staff couldn't care less to help clean it. No one wanted to use it since the floor was completely soaked so everyone just lined up the other restroom while the staff just chit chat with each other while looking at us.

LIT to DFW - 3 hours late; the entire plane had been boarded before they told us there was a delay due to a weather-related ground stop in Dallas. DFW to MAY - 2+ hours late due to A/C needing to be repaired after everyone had boarded, then when we finally reach the runway, the First Officer timed out and we had to taxi all the way back to the gate and wait for a new one. I arrived in New Orleans 5+ hours later than I should have. Return flights were completely cancelled; rebooked through the app to fly through CLT instead of DFW. MSY to CLT had no issues, but CLT to LIT was delayed 1.25 hrs because flight attendants had not arrived to the airport yet. At least they didn’t make us all sit on the plane to wait for them. I should have driven.

Tray table was filthy when I sat down. I needed to have someone come clean it because there was food and stains on it WiFi didn’t work after paying for in flight WiFi Food was terrible and was not filling at all Chicken was rubbery Flight attendant had an attitude, interrupted me and wasn’t able to answer basic questions about the food selection such as “does the chicken have red sauce in it”. If your flight attendants are not going to know what is in the meals so we can make an educated decision based on dietary restrictions, they shouldn’t be on the plane. My 1.5 year old niece was sleeping and dropped her binkie. I went on the ground under the chairs looking for it. It was at that time that she came up to me as I’m CLEARLY on all 4s with a flashlight and said “I need to get by”. I said one moment please I’m getting something from under the seat (while my head was literally under the seat). Her reply was “no you need to move now” and proceeded to almost push me out of the way. I looked up and all I saw was her toes under my eyes. When I looked in front of me, her private parts were inches away from my face. I then made a comment “you couldn’t waited 2 seconds?” and her response was, “no I need to use the bathroom”. I understand that and would never want to be the reason someone couldn’t get to the bathroom but I was under the seat. She could’ve gone around the other way instead of harassing me, basically placing her private parts on my head and borderline pushing me out of the way. You don’t pay (especially this much) for this deplorable experience. This was by far the worst experience I have ever had on American. I will be absolutely thinking twice and thrice about flying American Airlines again. I would rather pay more to fly delta because at least I know their WiFi will work and their flight attendants won’t have a terrible attitude for no reason, nor will they act the way this woman did. Unacceptable.

Tray table was filthy when I sat down. I needed to have someone come clean it because there was food and stains on it WiFi didn’t work after paying for in-flight WiFi. Food was terrible and was not filling at all Chicken was rubbery Flight attendant had an attitude, interrupted me and wasn’t able to answer basic questions about the food selection such as “does the chicken have red sauce in it”. If your flight attendants are not going to know what is in the meals so we can make an educated decision based on dietary restrictions, they shouldn’t be on the plane. My 1.5 year old niece was sleeping and dropped her binkie. I went on the ground under the chairs looking for it. It was at that time that she came up to me as I’m CLEARLY on all 4s with a flashlight and said “I need to get by”. I said one moment please I’m getting something from under the seat (while my head was literally under the seat). Her reply was “no you need to move now” and proceeded to almost push me out of the way. I looked up and all I saw was her toes under my eyes. When I looked in front of me, her private parts were inches away from my face. I then made a comment “you couldn’t waited 2 seconds?” and her response was, “no I need to use the bathroom”. I understand that and would never want to be the reason someone couldn’t get to the bathroom but I was under the seat. She could’ve gone around the other way instead of harassing me, basically placing her private parts on my head and borderline pushing me out of the way. You don’t pay that much for this deplorable experience. This was by far the worst experience I have ever had on American. I will be absolutely thinking twice and thrice about flying American Airlines again. I would rather pay more to fly delta because at least I know their WiFi will work and their flight attendants won’t have a shitty attitude for no reason, nor will they act the way this woman did. Unacceptable.

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.

Excellent host on board. Not so friendly check-in staff. Older plane with no food or entertainment due to short flight. Friendly captain and crew.

I don’t think there was entertainment? No mention of it. It was a good flight. Only complaint was my seat cushion was not attached and kept slipping.

They canceled the flight on us very close to the flight date .

It took 66 hours to get from Seattle to Tel Aviv. As a minor, I was left for more than 12 hours in Toronto and Frankfurt without hotel and food vouchers. It took 5 layovers. It was insane and not okay

It was delayed but got us to YYZ. I had great copassengers.

Flew SEA-CA, then CA-NRT. First flight was short but very uncomfortable, dirty, and had very small overhead storage space. The seats and fans were not cleaned and had visible dirt on them. Second flight was perfect.

My second flight ended up being through United and it was fine. Again, just frustrating that it was so late.

My experience was pretty frustrating because the first leg of my flight on United (though booked through Air Canada) was delayed causing me to miss my connecting flight on Air Canada. This could have been an easy solve as there was a direct flight later that morning via Air Canada that they easily could have put me on which would have only gotten me to my destination 2 1/2 hours later but because United and Air Canada don’t seem to have good communication they gave me the run around both telling me to talk with the other which I did three times to no avail. I ended up taking the delayed flight and getting on a new connecting flight which ended up getting me to my destination 6 hours later and I missed the event I was planning to go to this evening.

Everything went smoothly and as expected. We were on time and one flight arrived early.

First time flying Air Canada and the trip was very pleasant! They did a great job getting us out of Toronto and into Rome (early!) For an international flight it was very enjoyable.

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.
7/2Tue
2 stopsAmerican Airlines
33h 48mSTL-ICN
$778
7/2Tue
1 stopAmerican Airlines
18h 15mSTL-ICN
$779
7/12Fri
2 stopsAmerican Airlines
32h 23mSTL-ICN
$829
7/12Fri
1 stopAmerican Airlines
38h 56mSTL-ICN
$843
7/16Tue
2 stopsAmerican Airlines
31h 29mSTL-ICN
$858
7/16Tue
1 stopAmerican Airlines
19h 53mSTL-ICN
$859
7/10Wed
1 stopAir Canada
38h 25mSTL-ICN
$892
7/10Wed
2 stopsAir Canada
34h 00mSTL-ICN
$898
7/2Tue
2 stopsTurkish Airlines
43h 35mSTL-ICN
$936
7/2Tue
1 stopAir Canada
35h 25mSTL-ICN
$1,162

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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.
5/19Sun
multi-stopAir Canada
34h 00mSTL-ICN
6/16Sun
multi-stopAir Canada
35h 21mICN-STL
$1,872
5/21Tue
multi-stop
40h 30mSTL-ICN
5/29Wed
multi-stop
33h 59mICN-STL
$1,913
5/20Mon
multi-stopUnited Airlines
27h 10mSTL-ICN
6/14Fri
multi-stopUnited Airlines
22h 55mICN-STL
$2,094
5/20Mon
multi-stopUnited Airlines
24h 43mSTL-ICN
6/20Thu
multi-stopUnited Airlines
19h 25mICN-STL
$2,144
5/21Tue
multi-stopAmerican Airlines
18h 14mSTL-ICN
6/18Tue
multi-stopAmerican Airlines
29h 08mICN-STL
$2,168
5/20Mon
multi-stopAmerican Airlines
19h 54mSTL-ICN
6/18Tue
multi-stopAmerican Airlines
29h 29mICN-STL
$2,174
5/19Sun
multi-stopDelta
19h 09mSTL-ICN
6/18Tue
multi-stopDelta
16h 15mICN-STL
$2,290
5/20Mon
multi-stopDelta
29h 15mSTL-ICN
6/19Wed
multi-stopDelta
24h 02mICN-STL
$2,306
5/22Wed
multi-stopKorean Air
20h 50mSTL-ICN
8/7Wed
multi-stopKorean Air
15h 49mICN-STL
$2,476
5/21Tue
multi-stopKorean Air
19h 09mSTL-ICN
5/23Thu
multi-stopKorean Air
19h 00mICN-STL
$9,089

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St. Louis - Incheon Flights

Departure:

St. Louis (undefined)United States

Destination:

Seoul Incheon Airport (ICN)South Korea

Return flight deals:

Seoul Incheon Airport - St. Louis

Cabin classes: