Cheap flights from St. Louis to Seoul from $498
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Seoul departing on 12/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Fly from
Fly to
Route
Depart
Return
St. LouisIncheon
STL Lambert-St Louis - ICN Incheon Intl
STLICN
Lambert-St Louis
Tue 10/27
10:12 am-1:50 pm
2 stops37h 38m
Incheon Intl
Tue 11/17
7:35 pm-4:43 pm
2 stops36h 08m
St. LouisIncheon
STL Lambert-St Louis - ICN Incheon Intl
STLICN
Lambert-St Louis
Mon 10/26
7:02 am-12:40 am
2 stops27h 38m
Incheon Intl
Wed 11/25
10:00 am-4:34 pm
2 stops45h 34m
St. LouisIncheon
STL Lambert-St Louis - ICN Incheon Intl
STLICN
Lambert-St Louis
Sun 12/6
7:18 pm-3:30 pm
1 stop29h 12m
Incheon Intl
Tue 12/22
8:35 pm-11:28 pm
1 stop17h 53m
St. LouisIncheon
STL Lambert-St Louis - ICN Incheon Intl
STLICN
Lambert-St Louis
Mon 2/1
6:00 am-3:30 pm
1 stop18h 30m
Incheon Intl
Mon 2/15
8:35 pm-11:18 pm
1 stop17h 43m
St. LouisIncheon
STL Lambert-St Louis - ICN Incheon Intl
STLICN
Lambert-St Louis
Tue 11/3
1:40 pm-5:40 am
2 stops25h 00m
Incheon Intl
Tue 11/10
6:30 pm-9:52 pm
1 stop18h 22m
St. LouisIncheon
STL Lambert-St Louis - ICN Incheon Intl
STLICN
Lambert-St Louis
Tue 11/17
6:00 am-4:25 pm
1 stop19h 25m
Incheon Intl
Tue 12/15
12:45 pm-6:11 pm
1 stop20h 26m
St. LouisIncheon
STL Lambert-St Louis - ICN Incheon Intl
STLICN
Lambert-St Louis
Wed 12/9
7:10 am-4:45 pm
1 stop18h 35m
Incheon Intl
Wed 12/23
6:50 pm-12:16 am
1 stop20h 26m
St. LouisIncheon
STL Lambert-St Louis - ICN Incheon Intl
STLICN
Lambert-St Louis
Wed 2/10
4:05 pm-6:25 pm
1 stop35h 20m
Incheon Intl
Wed 2/17
8:10 pm-3:26 pm
1 stop34h 16m
St. LouisIncheon
STL Lambert-St Louis - ICN Incheon Intl
STLICN
Lambert-St Louis
Wed 2/10
4:05 pm-6:25 pm
1 stop35h 20m
Incheon Intl
Wed 2/17
6:55 pm-3:26 pm
2 stops35h 31m
St. LouisIncheon
STL Lambert-St Louis - ICN Incheon Intl
STLICN
Lambert-St Louis
Thu 12/17
5:00 am-4:45 pm
1 stop20h 45m
Incheon Intl
Fri 12/18
6:50 pm-12:16 am
1 stop20h 26m
See travel insights to Seoul from
How to get the cheapest flight ticket from St. Louis to Seoul
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between St. Louis and Seoul?
Prices are currently typical for flights on this route.
Typical prices usually range from $865 to $1,350.The lowest price recently found on this route was $1,091.
What is the cheapest airline that flies from Lambert-St Louis to Seoul?
Delta and Japan Airlines are the most popular carriers operating from Lambert-St Louis to Seoul
What airlines fly to Seoul?
Delta, United Airlines and Korean Air are the top three most popular airlines that fly to Seoul from St. Louis according to our data. Delta is the first choice among our users, with 63% of people opting to fly with this airline when traveling to Seoul. Keep in mind that there are 5 different airlines that fly to Seoul on a routine basis, so you have a few additional options to choose from.
Which airport is the most popular layover for flights between St. Louis and Seoul?
Atlanta (ATL) was the most common stop: 33% of momondo users choosing 1-stop flights on this route connected there.
Which layover airport offers the lowest fares from St. Louis to Seoul?
Flights via Minneapolis (MSP) offer the lowest average round-trip price of $916.
Which layover airport has the shortest travel time from St. Louis to Seoul?
Flights connecting via Atlanta (ATL) have the shortest average one-way travel time: 18h 11m.
Which layover airport has the shortest connection time from St. Louis to Seoul?
Seattle (SEA) has the shortest average layover time for this route: 2h 03m.
When to book flights from St. Louis to Seoul
Cheap St. Louis to Seoul (STL to SEL) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from St. Louis to Seoul
Frequently asked questions about flying from St. Louis to Seoul
How far is Lambert-St Louis to Seoul by plane?
The distance between Lambert-St Louis and Seoul is about 6661.9 mi. 17h 35m is a normal flight duration for this route.
When did momondo last update prices for flights from Lambert-St Louis Airport to Seoul?
Prices for flights from Lambert-St Louis Airport to Seoul are updated daily.
How many operators does momondo search for flights from Lambert-St Louis Airport to Seoul?
As of October 2026, there are 5 operators available to choose from for flights from Lambert-St Louis Airport to Seoul.
How old do you have to be to fly from Lambert-St Louis Airport to Seoul?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Seoul.
What documentation or ID do you need to fly to Seoul?
The required travel and health documents for your Seoul trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seoul. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from St. Louis to Seoul?
Based on momondo bookings for flights between St. Louis and Seoul, the leading airline is Delta, making up 68% of the total bookings. Other popular airlines include Japan Airlines with 17% and American Airlines with 15%.
Best airlines flying from St. Louis to Seoul
Compare and see reviews for airlines that fly from St. Louis to Seoul with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $846 | Free Cancellation | Rating 7.0 12,147 reviews | |||
| PriceFrom $846 | Free Cancellation | Rating 7.8 8,647 reviews | |||
| PriceFrom $865 | Free Cancellation | Rating 7.4 10,324 reviews | |||
| PriceFrom $999 | Free Cancellation | Rating 8.4 1,217 reviews | |||
| PriceFrom $1,083 | Free Cancellation | Rating 7.1 11,748 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from St. Louis to Seoul?
Finding the right flight to Seoul from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Seoul quick and easy, saving you time and money.
Can I find flights from St. Louis to Seoul with flexible booking policies on momondo?
momondo does allow users to show only those flights to Seoul from St. Louis which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from St. Louis to Seoul?
momondo provides multiple filters to help you find the best flight to Seoul from St. Louis. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from St. Louis to Seoul right now. Can momondo alert me if prices change?
Price alerts on flights to Seoul from St. Louis are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.