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Find cheap flights from St. Louis to South Korea 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 South Korea 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
Sat 5/25
Sat 6/1

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Best South Korea Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Seoul
Incheon2 stops$1,356
Busan
Busan2 stops$2,389

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

FAQs - booking South Korea flights

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

    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 South Korea.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to South Korea 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 South Korea?

    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 South Korea with an airline and back to St. Louis with another airline.

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

    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 South Korea 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 tips for finding cheap flights to South Korea

  • Morning departure is around 28% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from St. Louis to South Korea

 
Need help choosing which airline to fly with from St. Louis to South Korea? 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
8.8crew
8.2entertainment
8.3comfort
8.2food
8.6boarding
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 like the braised beef., miso soup,, and green tea. Very little choices of hollywood movies. The PA announcement in English was not very clear and very soft. I could hardly hear.

More updated movies & Chinese movies. The food sometimes overcooked. Prefer to have more neat snacks in between than just choose from the menu. Please change the menu every now and then. This is my second time flying within one year and the menu didn’t change at all!

Food is lagging. Very poor choice. Like vending machine fast food.

Please change the menu more often. The beef is not tender, more choice in ice cream flavor. Dessert is not good too.

First of all I had dozed off. And when I woke up, my food was on a tray without telling me the food was there or asking me if I wanted something to drink. They never came back to ask me if I wanted anything to drink and I tried to stop them several times. I personally have a problem swallowing food without something to drink with it. so therefore I could not eat., second thing for the entertainment. There was no place to plug the headset in because the tip had been broken off into the monitor to where you couldn’t even watch a movie or hear any music that was annoying .

Again I paid for an upgrade on my credit card didn’t get it need a refund. . American I not good at gettin in contact for refunds.

I didn’t like the check in process I had to check in at the counter took too much time . Didn’t give the upgrade my seat .

l enjoyed the variety of good and drink choices. The flight attendants were very quick and efficient to our needs.

Truly impressive service in the air. After the main meal, they have a delicious a la carte menu that you can order anytime until 1.5 hrs prior to landing. Flight crew were so pleasant and very efficient. Wish I could fly JAL more often!

Attentive crew, great service with regular rounds of drinks and trash collecting. Only complaint is the food, which was mediocre.

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.

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 South Korea

Recent round-trip flight deals

9/10Tue
2 stops
30h 26mSTL-ICN
11/14Thu
2 stops
32h 42mICN-STL
$1,356
9/10Tue
2 stopsAir Canada
38h 05mSTL-ICN
11/14Thu
1 stopAir Canada
34h 13mICN-STL
$1,402
5/5Sun
1 stopDelta
20h 50mSTL-ICN
5/19Sun
1 stopDelta
16h 33mICN-STL
$1,427
8/15Thu
1 stopDelta
18h 25mSTL-ICN
9/5Thu
1 stopDelta
24h 42mICN-STL
$1,428
5/5Sun
1 stopAmerican Airlines
18h 14mSTL-ICN
5/18Sat
1 stopAmerican Airlines
19h 34mICN-STL
$1,487
8/15Thu
2 stopsJapan Airlines
38h 19mSTL-GMP
9/5Thu
2 stopsJapan Airlines
41h 35mGMP-STL
$1,614
9/5Thu
2 stopsJapan Airlines
24h 30mSTL-GMP
9/12Thu
2 stopsJapan Airlines
21h 37mGMP-STL
$1,615
8/7Wed
1 stopAmerican Airlines
19h 21mSTL-ICN
8/16Fri
1 stopAmerican Airlines
32h 38mICN-STL
$1,788
5/16Thu
1 stopKorean Air
19h 09mSTL-ICN
7/19Fri
1 stopKorean Air
15h 56mICN-STL
$2,290
5/22Wed
1 stopKorean Air
19h 09mSTL-ICN
6/7Fri
1 stopKorean Air
16h 15mICN-STL
$2,374

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Recent one-way flight deals

9/2Mon
3 stops
35h 05mSTL-ICN
$666
9/11Wed
3 stops
41h 24mSTL-ICN
$698
7/16Tue
2 stopsAmerican Airlines
31h 29mSTL-ICN
$858
7/16Tue
1 stopAmerican Airlines
19h 53mSTL-ICN
$859
9/2Mon
2 stopsAir Canada
39h 30mSTL-ICN
$918
9/2Mon
1 stopKorean Air
20h 50mSTL-ICN
$965
7/2Tue
2 stopsTurkish Airlines
34h 10mSTL-ICN
$989
7/10Wed
1 stopAir Canada
38h 25mSTL-ICN
$998
7/10Wed
2 stopsAir Canada
34h 20mSTL-ICN
$1,004
6/1Sat
1 stopKorean Air
19h 09mSTL-ICN
$1,318

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Last minute flights from St. Louis to South Korea

Last minute flight, train and bus deals

4/26Fri
multi-stopAmerican Airlines
18h 14mSTL-ICN
5/24Fri
multi-stopAmerican Airlines
16h 03mICN-STL
$1,327
4/26Fri
multi-stopAmerican Airlines
32h 34mSTL-ICN
5/24Fri
multi-stopAmerican Airlines
16h 03mICN-STL
$1,330
4/26Fri
multi-stopAmerican Airlines
30h 16mSTL-ICN
5/24Fri
multi-stopAmerican Airlines
30h 28mICN-STL
$1,345
4/29Mon
multi-stopDelta
19h 07mSTL-ICN
5/17Fri
multi-stopDelta
16h 33mICN-STL
$1,427
4/29Mon
multi-stopDelta
20h 17mSTL-ICN
5/14Tue
multi-stopDelta
27h 05mICN-STL
$1,431
4/29Mon
multi-stop
19h 27mSTL-ICN
5/16Thu
multi-stop
18h 00mICN-STL
$1,629
4/29Mon
multi-stopJapan Airlines
20h 59mSTL-GMP
5/14Tue
multi-stopJapan Airlines
22h 22mGMP-STL
$1,758
4/26Fri
multi-stopJapan Airlines
37h 01mSTL-GMP
5/24Fri
multi-stopJapan Airlines
41h 57mGMP-STL
$1,792
4/27Sat
multi-stopUnited Airlines
21h 31mSTL-ICN
4/29Mon
multi-stopUnited Airlines
31h 09mICN-STL
$1,917
4/27Sat
multi-stopKorean Air
20h 50mSTL-ICN
4/29Mon
multi-stopKorean Air
15h 37mICN-STL
$2,076

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St. Louis - South Korea Flights

Departure:

St. Louis (STL)United States

Return flight deals:

South Korea - St. Louis

Cabin classes: