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STL - SEL

$648 Find cheap flights from St. Louis to Seoul

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 Seoul departing on 8/19. 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 6/8
Sat 6/15

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Seoul, 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 Seoul, as well as popular online travel agencies
In the last 7 days travelers have searched 43,895,468 times on KAYAK, and here is why:

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Cheap flight deals from St. Louis to Seoul (STL-SEL)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Seoul 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
5:30 pm - 2:10 pmSTL-ICN
30h 40m2 stops
8:15 pm - 3:40 pmICN-STL
33h 25m2 stops
$1,320
Find Deal
Thu, Sep 5 - Mon, Sep 9
9:44 am - 7:15 pmSTL-ICN
43h 31m2 stops
3:10 pm - 7:58 pmICN-STL
42h 48m2 stops
$1,353Cathay Pacific
Find Deal
Sun, Sep 1 - Sat, Sep 7
7:15 pm - 2:25 pmSTL-ICN
29h 10m1 stop
6:40 pm - 11:35 pmICN-STL
18h 55m1 stop
$1,428Delta
Find Deal
Sun, Oct 13 - Tue, Oct 22
2:38 pm - 3:15 pmSTL-ICN
34h 37m2 stops
5:25 pm - 10:04 amICN-STL
30h 39m2 stops
$1,430American Airlines
Find Deal
Sun, Oct 13 - Tue, Oct 22
7:10 am - 5:20 pmSTL-ICN
20h 10m2 stops
7:40 pm - 9:31 pmICN-STL
15h 51m1 stop
$1,432Delta
Find Deal
Thu, Sep 5 - Thu, Sep 12
6:58 pm - 3:15 pmSTL-ICN
30h 17m2 stops
5:25 pm - 10:24 pmICN-STL
18h 59m1 stop
$1,481American Airlines
Find Deal
Sun, Sep 22 - Sat, Oct 5
7:30 am - 10:00 pmSTL-GMP
24h 30m2 stops
7:55 am - 3:32 pmGMP-STL
21h 37m2 stops
$1,594Japan Airlines
Find Deal
Thu, Sep 5 - Thu, Sep 12
7:30 am - 10:00 pmSTL-GMP
24h 30m2 stops
7:55 am - 3:32 pmGMP-STL
21h 37m2 stops
$1,616Japan Airlines
Find Deal
Thu, Sep 5 - Thu, Sep 12
6:11 am - 3:20 pmSTL-ICN
19h 09m1 stop
4:25 pm - 9:13 pmICN-STL
18h 48m1 stop
$1,985Korean Air
Find Deal
Wed, May 22 - Fri, Jun 7
6:30 am - 5:20 pmSTL-ICN
20h 50m1 stop
6:40 pm - 11:43 pmICN-STL
19h 03m1 stop
$2,504Korean Air
Find Deal
Sun, May 26 - Sat, Jun 8

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

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

The average price of all flights from St. Louis to Seoul clicked on KAYAK for each day over the last 12 months.
For St. Louis to Seoul, Thursday is the cheapest day to fly on average and Saturday is the most expensive. Flying from Seoul back to St. Louis, the best deals are generally found on Monday, with Friday being the most expensive.

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

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The cheapest return flight ticket from St. Louis to Seoul found by KAYAK users in the last 72 hours was for $1,353 on Cathay Pacific, followed by Finnair ($1,364). One-way flight deals have also been found from as low as $717 on Cathay Pacific and from $858 on American Airlines.

Good to know

Low season

February

High season

June

Cheapest flight

$648
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 16% increase in price.
Flight from St. Louis to Incheon

When to book flights from St. Louis to Seoul

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

  • What is the cheapest flight from St. Louis to Seoul?

    In the last 3 days, the lowest price for a flight from St. Louis to Seoul was $648 for a one-way ticket and $1,320 for a round-trip.

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

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

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

    On your way to Seoul, you’ll fly out from Lambert-St Louis. You’ll be landing in one of Seoul’s 2 airports: Seoul Gimpo Intl or Incheon Intl.

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

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

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

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

  • Which is the best airline for flights from St. Louis to Seoul, Korean Air or Japan Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to Seoul are Korean Air and Japan Airlines. With an average price for the route of $1,928 and an overall rating of 8.5, Korean Air is the most popular choice. Japan Airlines is also a great choice for the route, with an average price of $1,713 and an overall rating of 8.3.

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

    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 Seoul.

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

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

    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 Seoul 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 Seoul?

    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 Seoul 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 Seoul

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Seoul. 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 Seoul? 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 1181 reviews
8.3Comfort
8.2Food
8.8Crew
8.2Entertainment
8.6Boarding
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

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.

West Jet has a horrible boarding process and the seats have no cushion.

Everything went smoothly. I didn’t like that when I booked in the main cabin my wife and I weren’t seated together. One would think when booking on an option that allows picking your seat. They would put you and your travel partner together. Had to call to get it sorted. They did fix.

All in all it was a long flight in economy class. There’s only so much comfort one can expect on a plane. The seats felt exceptionally hard and as an over 6’ individual I’ll seldom feel great about legroom. The food was good and the flight crew was great. The headphones provided for the movies were terrible, though

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!

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.

On time departure, smooth trip, flight attendant told through passengers the gate we would arrive at and the gate our outbound flight was departing from. Early arrival

Checking in at the airport the agent only booked the first keg of my trip and had my checked luggage going to the airport with a layover! Never was issued a boarding pass for the second leg or received sticker fir my checked bag. All was well in the end! Delta agents helped to resolve the situation!!!

Delayed due to an ill passenger after loading. Not preventable on Delta's part. Was in first class. The seats are becoming worn and detaching from their velcro attachments. Only got snacks on flight. The attendant was not the friendliest.

I would fly again the whole experience was great. The only feed back I can give that they don't do that American Airlines does is the crew there is more humorous with boarding and thank their passengers. It makes it more fun to fly with them. I would however fly Delta again.

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.

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. Very comfortable business seats with nice bedding. Good food. We were delayed to let late passengers on the flight, but otherwise great experience.

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

The CX617 from HK to BKK was delayed more than 1.5 hours.

Horrible - they lied to me about baggage & boarding, even though I specifically spoke to their agents the day before my flight about my issue. When I showed up they did not let me board and stranded me at my airport until I bought a new flight with money I did not have to spend.

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.

This is not a Business Class equipped airplane and even the crew apologize before take over BUT BUT Air Canada charged full business class fare

All was good, except our baggage was lost for most of a day. We are thankful that it was found quickly and delivered to our hotel. Rouge was fine outside of that problem.

You do not have a space for flight cancelled. BUT!!! Air Canada handled it great. Was booked on another airline for the next day. The original flight was booked solid. But he precheck by the maintenance found a mechanical problem and the plane was not safe to fly. It was an inconvenience to have to wait until next day but I would rather arrive safely.

Very good other than we have to wait for one crew and we’re delayed and the pilot and his co- pilot has to make a difference to be right on time arrival. Disappointed about no food service also.

I had written all my complaints on my trip from Grand Junction to Denver so I will repeat it here! I was absolutely appalled that I had to pay for a regular seat that I choose 24 hrs before boarding! Also I checked my large bag which I had to pay for as well, and by the time I boarded all the room in the bins were gone so also had to check that one. I noticed people pulling out oversized suitcases, bigger than the measurements stated for carry on, and also large pack packs stuffed full! So these people were taking up 2 or 3 spaces that the rest of us should have been able to use but couldn’t! NoTV on the flight! Thankfully I had downloaded the United Airlines app and was able to watch movies on my phone. Don’t remember the last time I flew in a plane with no movie screens!

I was appalled to have to pay for just a regular seat when I went to book 24 hrs before my flight! Because it was only an hour flight I didn’t choose a seat from Grand Junction to Denver, but I did for Toronto and had to pay just to choose a regular available seat! In my 60+ years of flying this was the first time I have heard of this. Also, allowing people to bring on “huge “ suitcases, not carry on size, but much bigger, and then a large pack pack stuffed. So they take up all the room in the overhead bins and if we are later boarding, there is no room so we have to check our small carry on. I have already paid for and checked in one bag! I certainly will not choose to fly with United again unless it is the “only” airline available!

Book cheap flights from St. Louis to Seoul

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from St. Louis to Seoul found on KAYAK in the last 72 hours.
8/19Mon
3 stops
34h 55mSTL-ICN
$648
8/20Tue
2 stopsCathay Pacific
45h 31mSTL-ICN
$717
7/16Tue
2 stopsAmerican Airlines
31h 29mSTL-ICN
$858
7/16Tue
1 stopAmerican Airlines
18h 15mSTL-ICN
$859
8/19Mon
2 stopsAir Canada
34h 00mSTL-ICN
$869
9/14Sat
2 stopsAir Canada
38h 05mSTL-ICN
$914
8/19Mon
1 stopKorean Air
21h 25mSTL-ICN
$958
9/21Sat
1 stopKorean Air
21h 25mSTL-ICN
$1,011
6/5Wed
2 stopsJapan Airlines
25h 00mSTL-GMP
$4,053
6/5Wed
2 stopsJapan Airlines
25h 00mSTL-GMP
$4,493

Search by stops

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Last minute flights from St. Louis to Seoul

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 Seoul that are departing in the next 10 days.
5/13Mon
multi-stopJapan Airlines
20h 59mSTL-GMP
5/25Sat
multi-stopJapan Airlines
25h 12mGMP-STL
$1,672
5/12Sun
multi-stopAmerican Airlines
18h 14mSTL-ICN
5/14Tue
multi-stopAmerican Airlines
16h 03mICN-STL
$1,674
5/13Mon
multi-stopAmerican Airlines
32h 55mSTL-ICN
5/18Sat
multi-stopAmerican Airlines
19h 34mICN-STL
$1,677
5/13Mon
multi-stopAmerican Airlines
39h 32mSTL-ICN
5/18Sat
multi-stopAmerican Airlines
19h 34mICN-STL
$1,683
5/13Mon
multi-stopJapan Airlines
37h 44mSTL-GMP
5/18Sat
multi-stopJapan Airlines
25h 12mGMP-STL
$1,717
5/12Sun
multi-stopJapan Airlines
24h 59mSTL-GMP
5/14Tue
multi-stopJapan Airlines
25h 12mGMP-STL
$1,727
5/12Sun
multi-stopUnited Airlines
27h 20mSTL-ICN
5/14Tue
multi-stopUnited Airlines
31h 09mICN-STL
$2,145
5/13Mon
multi-stopQatar Airways
34h 27mSTL-ICN
5/17Fri
multi-stopQatar Airways
36h 39mICN-STL
$2,730
5/13Mon
multi-stop
22h 15mSTL-ICN
5/18Sat
multi-stop
25h 16mICN-STL
$3,727

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St. Louis - Seoul Flights

Departure:

St. Louis (undefined)United States

Return flight deals:

Seoul - St. Louis

Cabin classes: