$586 Find Cheap Flights from St. Louis to South Korea

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 10/31. 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
1 adult, Economy, 0 bags

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Cheap Flights from St. Louis to South Korea

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Seoul
Incheon2 stops$1,211
Jeju City
Jeju City2 stops$17,396
Busan
Busan2 stops$1,749
Seoul
Incheon2 stops$1,211
Jeju City
Jeju City2 stops$17,396
Busan
Busan2 stops$1,749

Book Cheap St. Louis to South Korea Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to South Korea 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to South Korea

Mon, Nov 9 - Sun, Nov 15
Qatar Airways Logo
7:00 am - 5:15 pm
STL
-
ICN
43h 15m
2 stops
Qatar Airways Logo
12:20 am - 11:56 pm
ICN
-
STL
38h 36m
2 stops
$1,211Qatar Airways
Tue, Sep 22 - Wed, Oct 7
Air Canada Logo
2:40 pm - 5:30 pm
STL
-
ICN
36h 50m
1 stop
Air Canada Logo
6:00 pm - 6:41 pm
ICN
-
STL
38h 41m
1 stop
$1,256Air Canada
Tue, Aug 4 - Thu, Aug 20
Multiple Airlines Logo
6:37 am - 12:25 am
STL
-
ICN
27h 48m
2 stops
Multiple Airlines Logo
8:00 am - 10:25 pm
ICN
-
STL
28h 25m
2 stops
$1,258Multiple Airlines
Tue, Aug 4 - Thu, Aug 20
Air Canada Logo
2:40 pm - 5:30 pm
STL
-
ICN
36h 50m
1 stop
Air Canada Logo
7:05 pm - 2:02 pm
ICN
-
STL
32h 57m
1 stop
$1,260Air Canada
Wed, Aug 5 - Thu, Aug 20
Air Canada Logo
12:10 pm - 4:25 pm
STL
-
ICN
38h 15m
1 stop
Air Canada Logo
5:45 pm - 6:42 pm
ICN
-
STL
38h 57m
2 stops
$1,261Air Canada
Tue, Aug 4 - Wed, Aug 19
Air Canada Logo
2:40 pm - 5:30 pm
STL
-
ICN
36h 50m
1 stop
Air Canada Logo
5:45 pm - 6:42 pm
ICN
-
STL
38h 57m
2 stops
$1,265Air Canada
Wed, Aug 5 - Tue, Aug 18
Asiana Airlines Logo
12:10 pm - 4:25 pm
STL
-
ICN
38h 15m
1 stop
Asiana Airlines Logo
7:05 pm - 2:02 pm
ICN
-
STL
32h 57m
1 stop
$1,269Asiana Airlines
Wed, Aug 19 - Thu, Dec 17
Japan Airlines Logo
9:31 am - 9:15 pm
STL
-
GMP
21h 44m
2 stops
Japan Airlines Logo
8:00 am - 10:56 am
GMP
-
STL
17h 56m
2 stops
$1,536Japan Airlines
Mon, Nov 9 - Mon, Nov 16
Japan Airlines Logo
7:00 am - 10:05 pm
STL
-
GMP
24h 05m
2 stops
Japan Airlines Logo
12:05 pm - 11:42 pm
GMP
-
STL
26h 37m
2 stops
$1,547Japan Airlines
Wed, May 27 - Sat, May 30
Delta Logo
6:00 am - 8:45 pm
STL
-
PUS
24h 45m
2 stops
Delta Logo
8:45 am - 9:06 pm
PUS
-
STL
26h 21m
2 stops
$2,324Delta
Booking Insights

KAYAK's insights & trends for St. Louis to South Korea flights

Get data-powered insights and trends into flights from St. Louis to South Korea to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from St. Louis to South Korea?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to South Korea, 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 South Korea is October, when tickets cost $522 (return) on average. On the other hand, the most expensive months are July and June, when the average cost of round-trip tickets is $1,111 and $1,083 respectively.

Good to know

Low seasonAugust
Cheapest flight$586
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly with an average 27% increase in price.
Flight from St. Louis to Seoul Incheon Airport

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 from St. Louis to South Korea 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 from St. Louis to South Korea with an airline and back 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 from St. Louis to South Korea up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 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.
7.9
DeltaOverall score based on 8455 reviews
8.1Boarding
8.5Crew
7.8Entertainment
7.8Comfort
7.2Food
Airline reviews

Enjoyed it very much. Especially liked the free WiFi that Delta offers.

10.0 ExcellentBenjamin, May 2026
CLT - MSP
Read more Delta reviews

Enjoyed it very much. Especially liked the free WiFi that Delta offers.

Smooth flight. Left on time, and got in 15 minutes early. Onboard video was great

For some reason, TSA Atlanta didn’t have my bag on the flight on time and they don’t have to provide Delta a reason for that.

WiFi didn’t work on two of four planes. Flight attendants were not overly friendly or welcoming. Planes were extremely slow to board and deplane.

Delta does a great job with entertainment and free wifi. I can still be in touch with my colleagues while in the air.

Aside from a completely packed plane, I really have no complaints.

Bus to plane was delayed for no apparent reason and our luggage was still on the belt when they shut it off. Took about 20 minutes to turn it back on to get our luggage.

It was a pleasant surprise to have complimentary Wi-Fi on the flight

Much better than Latam, the worse airline company ever. I hope I don't have the need to fly Latam ever in my life again.

Seats in Delta Main are unbelievably close to the seat in front of. Hard to get a backpack under the seat.

Late plane. Only one crew on the ground so we b had to wait for Denver flight to come in, board, and depart. At 78 yrs of age I was not pleased trying to get my connection. What really made me angry was the notification you sent me to hurry up or I would miss my connection. Why tell me to hurry up when you got me in late. It was not a good way of treating customers.

No complaints other than luggage carousel was incorrectly guiding passengers to the wrong carousel on the screen.

Did not like that we couldn't complete check in on-line without providing pictures of our passports. Worry about identity theft. We had no delays and boarding was handled In an efficient manner.

We were a little disappointed to not be able to complete check in online without uploading pics of passports. Also we have KTN's and they weren't on our boarding passes when we got to security. Had to trek back to counter to have them fix.

Excellent service in Polaris class IAD to ZRH. Arrived rested and well fed after the overnight flight.

My flight time was changed without any notification to me which ruined my time sensitive plans so I ended up completely changing my travel plans and no reimbursement.

Excellent! I got to Munich and was transferred to my Lufthansa flight quickly, in 15 to 20 minutes, so I did not miss my flight. However, I had checked my overhead bag at the boarding gate in Tampa. That got to Tunis the next day. That is to be expected.

It's a short hop. My carryon was checked at the gate, I didn't have to drag it all over the airport. Excellent wheelchair assist.

WiFi didn’t exist , seats were super cramped, lights stayed on near my seat for a long time while others were dimmed, the food/trash/drink cart hit my shoulder at least a couple of times while moving, food options were down to just one option by the time it got to my row, the utensils were garbage (knife bent at a couple of places by the time I was done eating) the spoon was very flimsy plastic

Friendliest Flight Attendant I’ve seen since I flew on Southwest Airlines. The whole trip was outstanding…and arrived Early!

Fine. Nothing to write home about. The plane left on time, and arrived on time.

I was downgraded from first class to coach due to an airplane change. They pulled me out of line and I was the very last person to board the plane stuck in the middle seat with no overhead place to put my carry-.on. Very poor customer service.

Seat comfort was poor (no lumbar or lower back support).

The airplane seats were spacious and comfortable, and the flight attendants were friendly and attentive. The food was delicious like never before. The blankets and toiletries were thoughtfully provided. The captain's navigation was steady and reliable. In short, having flown with Starlux, I won't consider any other airline next time.

STOP MAKING THE SEATING SO CRAMPED. WE NEED A PASSENGER BILL OF RIGHTS!

The passenger in front of of me reclined their seat back all the way the entire flight. Their headrest was in my face the entire flight! I barely had room for the little plastic cup of water to fit on my tray table; can you make the seats and space between the rows any smaller??? You can’t even get up to use the restroom! Worst flight I’ve had in a very long time!

We had several flights and they were all on-time and flawless

My Frequent Flyer nber wasn't put on as I was told it was..... This resulted in a last group boarding and no priority tags on My bags.

Premium Economy Good crew, good service, excellent food. Seat back screen just not bright enough.

Terrible steward... Plane was quite empty... I asked to move "back" in the plane and the steward said no... Unnecessary power trip of mediocre people.

Everything you need to know for your flight from St. Louis to South Korea

Information on your arrival and departure airports