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Cheap Flights from St Louis (STL) to Seoul (SELA)

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Compare St Louis to Seoul flight deals

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Flight deals from St Louis to Seoul

Looking for a cheap last-minute deal or the best return flight from St Louis to Seoul? Find the lowest prices on one-way and return tickets right here.
Seoul.$1,502 per passenger.Departing Wed, 6 Aug, returning Thu, 21 Aug.Return flight with United.Outbound indirect flight with United, departs from St Louis on Wed, 6 Aug, arriving in Incheon International.Inbound indirect flight with United, departs from Incheon International on Thu, 21 Aug, arriving in St Louis.Price includes taxes and charges.From $1,502, select.
Seoul.$1,512 per passenger.Departing Tue, 9 Sep, returning Tue, 7 Oct.Return flight with United.Outbound indirect flight with United, departs from St Louis on Tue, 9 Sep, arriving in Incheon International.Inbound indirect flight with United, departs from Incheon International on Tue, 7 Oct, arriving in St Louis.Price includes taxes and charges.From $1,512, select.
Seoul.$1,512 per passenger.Departing Thu, 28 Aug, returning Thu, 25 Sep.Return flight with United.Outbound indirect flight with United, departs from St Louis on Thu, 28 Aug, arriving in Incheon International.Inbound indirect flight with United, departs from Incheon International on Thu, 25 Sep, arriving in St Louis.Price includes taxes and charges.From $1,512, select.
Seoul.$1,515 per passenger.Departing Tue, 9 Sep, returning Tue, 23 Sep.Return flight with United.Outbound indirect flight with United, departs from St Louis on Tue, 9 Sep, arriving in Incheon International.Inbound indirect flight with United, departs from Incheon International on Tue, 23 Sep, arriving in St Louis.Price includes taxes and charges.From $1,515, select.
Seoul.$1,547 per passenger.Departing Thu, 8 Jan, returning Thu, 15 Jan.Return flight with United.Outbound indirect flight with United, departs from St Louis on Thu, 8 Jan, arriving in Incheon International.Inbound indirect flight with United, departs from Incheon International on Thu, 15 Jan, arriving in St Louis.Price includes taxes and charges.From $1,547, select.
Seoul.$1,632 per passenger.Departing Wed, 1 Oct, returning Sun, 12 Oct.Return flight with Delta.Outbound indirect flight with Delta, departs from St Louis on Wed, 1 Oct, arriving in Incheon International.Inbound indirect flight with Delta, departs from Incheon International on Sun, 12 Oct, arriving in St Louis.Price includes taxes and charges.From $1,632, select.
Seoul.$1,766 per passenger.Departing Tue, 6 Jan, returning Tue, 3 Feb.Return flight with United.Outbound indirect flight with United, departs from St Louis on Tue, 6 Jan, arriving in Incheon International.Inbound indirect flight with United, departs from Incheon International on Tue, 3 Feb, arriving in St Louis.Price includes taxes and charges.From $1,766, select.
Seoul.$1,988 per passenger.Departing Sun, 7 Sep, returning Mon, 1 Dec.Return flight with Delta.Outbound indirect flight with Delta, departs from St Louis on Sun, 7 Sep, arriving in Incheon International.Inbound indirect flight with Delta, departs from Incheon International on Mon, 1 Dec, arriving in St Louis.Price includes taxes and charges.From $1,988, select.

Find the cheapest month to fly from St Louis to Seoul

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like St Louis to Seoul flights are currently cheapest in August.
May
from $2,225
Jun
from $2,388
Jul
from $2,299
Aug
from $1,502
Sep
from $1,515
Oct
from $1,632
Nov
Find prices
Dec
Find prices
Jan
from $1,547
Feb
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Mar
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Apr
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Alternative St Louis to Seoul routes

Looking for the cheapest, fastest or easiest route from St Louis to Seoul? You could fly into the following airports instead.

St Louis to Seoul: Flight information

The things to know before you go.
Cheapest flight found$1,502
Cheapest month to flyAugust

Finding cheap flights from St Louis to Seoul: Frequently asked questions

There are 2 airports in Seoul: Gimpo International and Incheon International.
The best price we found for a return flight from St Louis to Seoul is $1,502. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from St Louis to Seoul. But we found flights with one or more stops from $1,502.
As of May 2025, there are no flights flying from St Louis to Seoul.
The cheapest month to fly from St Louis to Seoul is usually August.
If you're flying from St Louis Airport, the cheapest airport near Seoul is Incheon International – which is 47.8 km away from the centre of Seoul. We've found flights into this airport from $1,502.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from St Louis Airport to Seoul on Wednesday, 6 August 2025.
No airlines currently offer direct flights between St Louis Airport and Seoul. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Seoul but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Seoul is around 40 days in advance, so don’t leave your flight to the last minute.
In May, the average temperature is usually around 15°C. August is typically the warmest month in Seoul, when it usually averages around 28°C. You can expect the least rain in January. The coldest month is January, with temperatures averaging -8°C. The rainiest month is July.
Currently, United offers the cheapest flight tickets to Seoul.

Travelling from Lambert-St. Louis International Airport (STL) to Seoul: what you need to know

  • Seoul is 14 hours ahead of St Louis, where Lambert-St. Louis International Airport is located. Seoul operates on the UTC+9 timezone.

  • For stress-free travel, arrive at the airport two hours ahead of international flights and one hour before domestic departures. This will give you enough time to board your flight from STL to Seoul.

  • If you're getting away during a peak month like July, make your way to the airport even earlier. It's wise to arrive up to four hours before international flights and two hours ahead of a domestic departure. Security lines will be longer during peak periods like summer, Christmas and New Year.

  • We make it a piece of cake to book a flight from STL to Seoul that includes a stopover. To see the options, deselect 'Direct flights only.' Next, pick a flight with a stop long enough to see the sights of your chosen city. Top stopovers include:

    • Harry Reid Airport (formerly McCarran Airport) Airport (LAS)

    • Hartsfield-Jackson Atlanta International Airport (ATL)

    • Dallas/Fort Worth International Airport (DFW)

  • To visit South Korea for tourism purposes, you will need an ETA if you hold a passport from United States. However, visa rules are subject to change and you may need additional documents depending on the duration and purpose of your stay. Always check the most recent guidelines before you book your cheap ticket from Lambert-St. Louis International Airport to Seoul.

  • Travelling from central St Louis to STL takes around 36 minutes on public transport. If you drive, ride-share or get a cab, you'll cover the 26 kilometres in 21 minutes or so, depending on traffic.

  • Searching for a convenient hotel close to STL? If you've booked an early flight from Lambert-St. Louis International Airport to Seoul, these accommodation options will put you moments from your departure gate:

How to find the cheapest flights from Lambert-St. Louis International Airport (STL) to Seoul

  • $778 is the lowest price for a one-way ticket from Lambert-St. Louis International Airport to Seoul. A return flight starts at $1,502. These prices can change depending on availability and demand.

  • Don't wait until the last moment. You're more likely to get cheap tickets from STL to Seoul if you book early. Airlines often offer some great early bird rates.

  • Getting cheap tickets from Lambert-St. Louis International Airport to Seoul is easier if you can be flexible with your trip dates. Use the 'Whole month' tool to see the lowest fares across every month and bag a great deal.

  • Set up a Price Alert for flight tickets from STL to Seoul. You don't need to search every day to find out if prices have dropped. We'll update you the moment there's a change in price.

  • Tailor your trip with filters. Pick your preferred arrival and departure times, total journey duration and airlines. You can also sort the results by 'Fastest,' 'Cheapest' or 'Best' flights from Lambert-St. Louis International Airport to Seoul.

Airports in Seoul

Incheon International Airport (ICN)

  • Incheon International Airport (ICN) to the centre of Seoul is approximately 48 kilometres. If you're getting a cab or renting a car, plan ahead to make your trip as smooth as possible. Journey times may vary based on traffic and the time of day.

  • Getting there by public transport typically takes 1 hour and 44 minutes.

  • If you're arriving on a late flight from Lambert-St. Louis International Airport to Seoul, few things beat the convenience of staying near the terminal. Pick up your bags from the carousel and then be showered and snoozing not long after at one of these hotels near ICN:

Gimpo International Airport (GMP)

  • Gimpo International Airport (GMP) is about 16 kilometres from central Seoul. Check out your options for making your way into town after your flight from Lambert-St. Louis International Airport to Seoul has touched down.

  • You can expect the trip to take roughly 1 hour and 3 minutes on public transport.

  • You'll find some great places to call home for the night near GMP. Settle in and get cosy after your flight from STL to Seoul at one of these well-located options:

Best time to go to Seoul

  • July is the busiest month to hop on a flight from Lambert-St. Louis International Airport to Seoul while April is the quietest. To work out the ideal time to visit Seoul, consider your preferred travel pace and style.

  • When booking your flight from Lambert-St. Louis International Airport to Seoul, think about the kind of weather you enjoy. August is the warmest month in Seoul, with the temperature ranging from 19ºC to 32ºC.

  • If you like cooler conditions, look for a cheap flight from STL to Seoul in January when temperatures average between -12ºC and 4ºC.

More about Seoul

  • After booking your flight from Lambert-St. Louis International Airport to Seoul, think about where you'll stay in this city. Make one of these options your base for exploring Seoul:

  • Every great adventure has to include some sightseeing. Gyeongbokgung Palace, Bukchon Hanok Village and N Seoul Tower are attractions you won't want to skip in Seoul.

Complete your Seoul trip with a car rental

  • We use the same magic that helped you find your cheap flight from Lambert-St. Louis International Airport to Seoul to track down deals on car rentals. Search for your ride in seconds and compare your options in one place. Plus we give you all the info you need on car rentals in Seoul, from the most popular car type to the best time to book.

Plan the rest of your trip from St Louis to Seoul

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.