SEL - STL

$434 Find Cheap Flights from Seoul to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seoul to St. Louis departing on 1/23. 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

KAYAK searches hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seoul to St. Louis, 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 Seoul to St. Louis, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$671
Typical prices: $852-$927
United Airlines
Tue 4/14Tue 4/21
ICN - STL • 1 stop
Cheapest one-way
$434
Multiple Airlines
Fri 1/23
ICN - STL • 3 stops
Top airlines
United Airlines
Cheapest • from $671 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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We hope you love your trip to St. Louis!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seoul to St. Louis 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 Seoul to St. Louis

Tue, Apr 14 - Tue, Apr 21
United Airlines Logo
4:50 pm - 5:52 am
ICN
-
STL
27h 02m1 stop
United Airlines Logo
7:06 pm - 4:20 am
STL
-
ICN
19h 14m1 stop
$671United Airlines
Tue, Apr 14 - Tue, Apr 21
United Airlines Logo
4:50 pm - 5:52 am
ICN
-
STL
27h 02m1 stop
United Airlines Logo
7:06 pm - 4:20 am
STL
-
ICN
19h 14m1 stop
$672United Airlines
Tue, Apr 14 - Tue, Apr 21
United Airlines Logo
4:50 pm - 9:28 am
ICN
-
STL
30h 38m2 stops
United Airlines Logo
6:02 pm - 4:20 am
STL
-
ICN
20h 18m2 stops
$675United Airlines
Wed, Feb 25 - Mon, Mar 9
United Airlines Logo
12:45 pm - 9:00 pm
ICN
-
STL
23h 15m2 stops
United Airlines Logo
5:55 pm - 4:40 am
STL
-
ICN
20h 45m2 stops
$676United Airlines
Thu, Jun 4 - Thu, Jun 18
Multiple Airlines Logo
9:00 pm - 12:04 am
ICN
-
STL
17h 04m1 stop
Multiple Airlines Logo
7:32 pm - 4:20 am
STL
-
ICN
18h 48m1 stop
$684Multiple Airlines
Fri, Apr 24 - Sun, May 31
Multiple Airlines Logo
9:00 pm - 11:55 pm
ICN
-
STL
16h 55m1 stop
Multiple Airlines Logo
6:22 pm - 4:20 am
STL
-
ICN
19h 58m1 stop
$687Multiple Airlines
Sat, Jan 24 - Sat, Jan 31
American Airlines Logo
7:15 pm - 9:24 am
ICN
-
STL
29h 09m2 stops
American Airlines Logo
6:43 pm - 4:45 pm
STL
-
ICN
31h 02m2 stops
$791American Airlines
Wed, Apr 1 - Sun, Apr 5
Japan Airlines Logo
7:55 am - 4:02 pm
GMP
-
STL
22h 07m2 stops
Japan Airlines Logo
6:38 am - 9:50 pm
STL
-
GMP
49h 12m2 stops
$1,359Japan Airlines
Wed, Apr 1 - Sun, Apr 5
Japan Airlines Logo
7:55 am - 4:02 pm
GMP
-
STL
22h 07m2 stops
Japan Airlines Logo
6:38 am - 9:50 pm
STL
-
GMP
49h 12m2 stops
$1,361Japan Airlines
Sat, Apr 11 - Tue, Apr 21
ANA Logo
12:40 pm - 9:03 pm
GMP
-
STL
22h 23m2 stops
ANA Logo
8:26 am - 10:20 pm
STL
-
GMP
23h 54m2 stops
$3,667ANA
Booking Insights

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

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

The average price of all round-trip flights from Seoul to St. Louis clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Seoul to St. Louis, look for departures on Thursdays and avoid leaving on a Saturday, as it's usually the priciest day. When flying back from St. Louis, Wednesday is the cheapest day to fly and Friday is the most expensive.

Good to know

Cheapest flight$434
Flight from Seoul Incheon Airport to St. Louis

When to book flights from Seoul to St. Louis

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

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

    In the last 3 days, the lowest price for a flight from Seoul to St. Louis was $434 for a one-way ticket and $671 for a round-trip.

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

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

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

    There are 2 airports in Seoul (Seoul Gimpo Intl and Incheon Intl.) and only 1 airport in St. Louis (Lambert-St Louis). The cheapest flights are generally found on the Seoul Incheon Airport to Lambert-St Louis flight route.

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

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

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

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

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

    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 Seoul to St. Louis.

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

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

    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 St. Louis with an airline and back to Seoul with another airline.

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

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

Reviews of the top airlines flying from Seoul to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from Seoul to St. Louis. 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 Seoul to St. Louis? 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 8007 reviews
8.5Crew
7.9Comfort
8.1Boarding
7.9Entertainment
7.3Food
Airline reviews

Original flight was cancelled and when i was rebooked by the airline, they couldn't seat me in the same type of seat as I had originally booked (went from window/aisle to middle/middle and one was a bulkhead seat, and other wasn't in the same class)

6.0 GoodJeff, Dec 2025
JFK - MIA
Read more Delta reviews

Original flight was cancelled and when i was rebooked by the airline, they couldn't seat me in the same type of seat as I had originally booked (went from window/aisle to middle/middle and one was a bulkhead seat, and other wasn't in the same class)

Lady Pilot was perfect in every way wheels up to wheels down communication, professionalism, excellent on time departure and on time arrival, excellent communication! Fantastic job with Superb attitude!!

The food is terrible. The staff is wonderful. Comfort is good.

For some reason, I couldn't choose my seat. The airline gave me a seat when I got there. Not happy about that. Otherwise, everything else was great!

Left on time, a bit delayed due to headwinds most of the trip.

I fly Delta all the time, have Platinum Medallion status. But this route seems to have major problems with delays and seems to never leave on time! Have only taken it twice in the last two weeks, and each time it had delays of more than 1 hour... very disappointed!!!!

Good seats in Main cabin, excellent service and excellent landing

My flight was cancelled with no explanation after I had already cleared security. I was given 4 options to rebook, only one being non-stop like I had paid for. I grabbed it. It was 4 plus hours later and then took off even later. Biggest complaint is that I booked early and had an aisle seat. They gave me a "window" seat in front of the exit row, so the seat did not decline. I weigh all of 103 #s and it was tight for me! For what I paid, I feel I was kind of ripped off. I think they should have given me the empty comfort seat for the inconvenience. There was no apology nor any explanation as to why the flight was cancelled. My guess is it benefitted Delta in some way.

Very smooth, on-time, and pleasantly uneventful flight. The team at the gate and on board were professional and genuinely courteous. The pilot kept us well updated throughout, and both takeoff and landing were steady and enjoyable without any drama. Just a good, solid flight. Thank you! 💗

Staff was exceptional! Everyone was kind, professional and friendly making the trip very pleasant. Thank you!

Awful. They won’t help me with anything. I booked on American but they abdicated to Iberia. The ticket was overpriced. Everything negative

it was fine, decent flight... dont get food besides cookies or pretzels so not sure why you ask about food. same for entertainment..

I got sick nothing contagious but distressing and the care I received by Kayla? Keighly the flight attendant will be memorable for ever. Thank You

I got sick nothing contagious but distressing enough and the care I received on the flight was astounding.

Waaay too small plane. They also need to up the size of the overhead bins. I would love to keep me 3k with of camera equipment in my hard case baggahe instead of it being thrown into the belly of the plane

Attendants were pleasant and the flight was smooth and relaxed.

A little late at the start but all worked out well.

It was fine. No drinks nor snacks offered though. I thought that was unusual.

I liked the humor of the captain and crew on the flight from Flagstaff to Dallas. They were humorous.

AA delayed the flight for 3 hours and 50 minutes, but delayed the last 2 hours, 30 minutes at a time, so if we knew before, could have stayed at home and worked instead of being at the airport wasting time... The plane's crew was excellent, not their fault.

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

Information on your arrival and departure airports