$478 Find Cheap Flights from South Korea 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 to St. Louis departing on 5/21. 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

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 for flights 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 for flights to St. Louis, as well as popular online travel agencies
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Cheap Flights from South Korea to St. Louis

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from South Korea 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.

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

KAYAK's recommended round-trip deals from the most popular airlines that fly from South Korea to St. Louis.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
Air Canada Logo
5:45 pm - 12:19 pmICN-STL
56h 34m2 stops
Air Canada Logo
7:30 am - 4:05 pmSTL-ICN
42h 35m2 stops
$795Air Canada
Find Deal
Mon, May 12 - Sun, May 18
Air Canada Logo
7:05 pm - 12:36 pmICN-STL
31h 31m1 stop
Air Canada Logo
7:30 am - 4:05 pmSTL-ICN
42h 35m2 stops
$842Air Canada
Find Deal
Sun, May 11 - Sun, May 18
Air Canada Logo
5:45 pm - 3:47 pmICN-STL
36h 02m2 stops
Air Canada Logo
7:30 am - 4:05 pmSTL-ICN
42h 35m2 stops
$858Air Canada
Find Deal
Sun, May 11 - Sun, May 18
American Airlines Logo
5:25 pm - 10:27 pmICN-STL
19h 02m1 stop
American Airlines Logo
7:19 am - 3:30 pmSTL-ICN
18h 11m1 stop
$1,081American Airlines
Find Deal
Mon, Sep 15 - Tue, Oct 14
 Logo
6:20 pm - 11:59 pmICN-STL
19h 39m1 stop
 Logo
7:00 am - 5:55 pmSTL-ICN
20h 55m1 stop
$1,110
Find Deal
Sun, May 11 - Thu, May 15
 Logo
6:20 pm - 12:04 amICN-STL
19h 44m1 stop
 Logo
6:41 am - 4:30 amSTL-ICN
31h 49m2 stops
$1,189
Find Deal
Tue, May 27 - Tue, Jun 24
Korean Air Logo
10:15 am - 1:20 pmICN-STL
17h 05m1 stop
Korean Air Logo
8:50 am - 5:20 pmSTL-ICN
18h 30m1 stop
$1,273Korean Air
Find Deal
Mon, Sep 15 - Wed, Oct 8
Delta Logo
4:30 pm - 10:47 amPUS-STL
32h 17m2 stops
Delta Logo
6:00 am - 7:35 pmSTL-PUS
23h 35m2 stops
$1,443Delta
Find Deal
Wed, Jun 4 - Wed, Jun 11
Korean Air Logo
7:40 pm - 12:43 amICN-STL
19h 03m1 stop
Korean Air Logo
7:30 am - 3:20 pmSTL-ICN
17h 50m1 stop
$1,525Korean Air
Find Deal
Mon, Jun 30 - Thu, Jul 17
Delta Logo
4:30 pm - 5:09 pmPUS-STL
38h 39m2 stops
Delta Logo
6:00 am - 8:45 pmSTL-PUS
24h 45m2 stops
$1,584Delta
Find Deal
Thu, Jun 5 - Thu, Jun 12

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

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

What is the cheapest day to fly to St. Louis?

The average price of all round-trip flights to St. Louis clicked on KAYAK for each day over the last 12 months.
Based on KAYAK data, the cheapest day to fly to St. Louis is Wednesday where round-trip tickets can be as cheap as $273. On the other hand, the most expensive day to fly is Monday, where round-trip prices are $526 on average.

What is the cheapest time of day to fly to St. Louis?

The average price for all round-trip flights to St. Louis depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
The cheapest time of day to fly to St. Louis is generally at night, when round-trip flights cost $1,112 on average. The most expensive time of day to fly to St. Louis is generally in the morning, which is peak travel time and where the average cost of a ticket is $1,719.

Good to know

Low season

March

High season

July

Cheapest flight

$478
Best time to beat the crowds with an average 36% drop in price.
Most popular time to fly with an average 23% increase in price.
Flight from Seoul Incheon Airport to St. Louis

FAQs - booking St. Louis flights

  • How far is Lambert-St Louis Airport from central St. Louis?

    The city center of St. Louis is 13 miles from Lambert-St Louis Airport.

  • What is the name of St. Louis’s airport?

    When flying to St. Louis, you'll arrive at Lambert-St Louis Airport (STL). The airport is also known as Lambert Field, Lambert-St Louis, St. Louis Lambert, or St. Louis Lambert Intl.

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to 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 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 with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight 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 up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • How many direct flights to St. Louis are there each week?

    Each week there are around 1,678 direct flights from within South Korea to St. Louis. The most common day for departures is Thursday, with 15% of flights taking off on this day.

See more FAQs

Top tips for finding cheap flights to St. Louis

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest St. Louis flight deals.

Top airlines flying from South Korea to St. Louis

 
See real verified KAYAK customer reviews for airlines flying to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from South Korea to St. Louis. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with 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.
8.4
Korean AirOverall score based on 1062 reviews
8.1Food
8.3Comfort
8.2Entertainment
8.7Crew
8.5Boarding
Airline reviews

They did an excellent job helping me with a wheelchair. I couldn’t have asked for any better help.

8.0 ExcellentAnonymous, Apr 2025ICN - BKK
Read more Korean Air reviews

They did an excellent job helping me with a wheelchair. I couldn’t have asked for any better help.

Great except for the delay in Korea. Korean Air did a great job setting up a hotel for the night. I also needed assistance with a wheelchair and they were outstanding.

The flight was on time and very quick, as expected, but the leg room isn't great in coach seats.

The boarding process for Korean airlines is very straightforward and easy. You've never met such helpful and friendly people. The food was great and the entertainment options were excellent too. My teenage boys found programs they wanted to watch while I had fun watching a full season of the Last Man - the Blind Investigator (Japanese), which my wife enjoyed too. My only complaint was that it takes a very long time to taxi at ICN (20 minutes) and the pilot had to hold at the gate for 10 minutes after our scheduled departure time, which meant we got to Seattle 27 minutes late. Luckily I had a long enough connection to make my next flight, but just barely.

Best service I’ve ever had Flight attendants are nicely dressed and look very professional

Just a typical domestic poor flight nothing more. There is no food choices in such a flight. Crew doesn't really care if you are on-board or not

My second flight wasn't better than the first one. And this is 14 hours trip, crew came out only to offer food and the choices was poor. This food choices are good for Asian people but not for westerners. The breakfast kind thing was a corn sausage really disgusting. The air-conditioned blower really blow high and cold, turn out on my arrival to feel seek, that makes the trip uncomfortable. The crew didn't not really come out during the trip to offer drinks or snacks. No fruits available. Very poor service

Our seat row plus one ahead and behind we're completely overlooked during beverage service...

I loved everything, I was just a little confused on my bag allowance. When I checked in it said I was allowed 2 check in bags, but when I got there they said I was only allowed 1 so I had to pay an additional 200 dollars! Other then that everything was great! I would love to use your Airlines again when I fly out to Manila again in late May, however I want to be able to have 2 bags included this time lol 😆

Need to have space for Cary on when traveler boarding any zone

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

Delta is a cut above the others in customer service.

The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

A little bumpy ride . No food was being provided due the the turbulence. That was ok it was a short flight to my standards.

Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.

I love the free WiFi!! Crew was nice. Bathroom was decent. First time flying delta in a long time and I enjoyed it. Will definitely look into booking with Delta more but I think Delta is a little more expensive than the other airlines.

third trip overseas with delta recently where the TV did not work- not acceptable for a 8 hour flight! your food really has declined crew great and I am loyal to delta

Boarding in Amsterdam is always chaotic. KLM/ Delta has not streamlined or made it efficient as it was boarding in Detroit . The food was mediocre The crew was unfriendly and more focused on getting things done quickly rather than service with a smile .

The Dekta Rep that checked us in was great. She's very personable, pleasant, and can tell she enjoys her job.

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

Information on the airport you'll fly into in St. Louis

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