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Cheap Flights from St Louis to Incheon International

Compare St Louis to Incheon International flight deals

Find the cheapest month or even day of the year to fly to Incheon International

Book the best Incheon International fare with no extra fees

Flight deals from St Louis to Incheon International

Looking for a cheap last-minute deal or the best return flight from St Louis Airport to Incheon International Airport? If you want to travel next month, return fares start from Rs300,680. Find the lowest prices on one-way and return tickets right here.
Seoul.Rs123,527 per passenger.Departing Sun, 16 Aug.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Sun, 16 Aug, arriving in Incheon International.Price includes taxes and charges.From Rs123,527, select.
Seoul.Rs132,790 per passenger.Departing Wed, 16 Sep.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Wed, 16 Sep, arriving in Incheon International.Price includes taxes and charges.From Rs132,790, select.
Seoul.Rs140,057 per passenger.Departing Tue, 13 Oct.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Tue, 13 Oct, arriving in Incheon International.Price includes taxes and charges.From Rs140,057, select.
Seoul.Rs147,228 per passenger.Departing Thu, 12 Nov.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Thu, 12 Nov, arriving in Incheon International.Price includes taxes and charges.From Rs147,228, select.
Seoul.Rs149,149 per passenger.Departing Wed, 29 Jul.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Wed, 29 Jul, arriving in Incheon International.Price includes taxes and charges.From Rs149,149, select.
Seoul.Rs177,983 per passenger.Departing Wed, 27 Jan.One-way flight with Air Canada.Outbound indirect flight with Air Canada, departs from St Louis on Wed, 27 Jan, arriving in Incheon International.Price includes taxes and charges.From Rs177,983, select.
Seoul.Rs179,156 per passenger.Departing Mon, 15 Feb.One-way flight with Air Canada.Outbound indirect flight with Air Canada, departs from St Louis on Mon, 15 Feb, arriving in Incheon International.Price includes taxes and charges.From Rs179,156, select.
Seoul.Rs189,341 per passenger.Departing Thu, 1 Apr.One-way flight with Air Canada.Outbound indirect flight with Air Canada, departs from St Louis on Thu, 1 Apr, arriving in Incheon International.Price includes taxes and charges.From Rs189,341, select.
Seoul.Rs213,415 per passenger.Departing Mon, 14 Jun.One-way flight with Air Canada.Outbound indirect flight with Air Canada, departs from St Louis on Mon, 14 Jun, arriving in Incheon International.Price includes taxes and charges.From Rs213,415, select.
Seoul.Rs215,342 per passenger.Departing Sat, 12 Dec.One-way flight with Air Canada.Outbound indirect flight with Air Canada, departs from St Louis on Sat, 12 Dec, arriving in Incheon International.Price includes taxes and charges.From Rs215,342, select.
Seoul.Rs216,056 per passenger.Departing Fri, 12 Mar.One-way flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departs from St Louis on Fri, 12 Mar, arriving in Incheon International.Price includes taxes and charges.From Rs216,056, select.
Seoul.Rs222,618 per passenger.Departing Thu, 27 May.One-way flight with Air Canada.Outbound indirect flight with Air Canada, departs from St Louis on Thu, 27 May, arriving in Incheon International.Price includes taxes and charges.From Rs222,618, select.

Find the cheapest month to fly from St Louis to Incheon International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like St Louis to Incheon International flights are currently cheapest in August.
Jul
from Rs149,149
Aug
from Rs123,527
Sep
from Rs132,790
Oct
from Rs140,057
Nov
from Rs147,228
Dec
from Rs215,342
Jan
from Rs177,983
Feb
from Rs179,156
Mar
from Rs216,056
Apr
from Rs189,341
May
from Rs222,618
Jun
from Rs213,415

St Louis to Incheon International: Alternative routes

Compare routes from St Louis to Seoul below. You may find an airport to fly into that's cheaper, faster, or easier than Incheon International.

Gimpo International

17km from central Seoul
Closest
from Rs196,080
Search flights

Incheon International

48km from central Seoul
Cheapest
from Rs123,527
Search flights

St Louis to Seoul: Flight information

The things to know before you go.
Cheapest flight foundRs123,527
Cheapest month to flyAugust

Finding cheap flights from St Louis to Incheon International: Frequently asked questions

The best price we found for a return flight from St Louis to Incheon International is Rs260,639. 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 Incheon International. But we found flights with one or more stops from Rs260,639.
As of July 2026, there are no flights flying from St Louis to Incheon International.
The cheapest month to fly from St Louis to Incheon International is usually October.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from St Louis Airport to Incheon International Airport on Thursday, 1 October 2026.
No airlines currently offer direct flights between St Louis Airport and Incheon International Airport. 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 Incheon International 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.

Currently, Frontier Airlines offers the cheapest flight tickets to Incheon International.

Flying from St Louis Airport (STL) to Incheon International Airport (ICN): what you need to know

  • Seoul is 15 hours ahead of St Louis and follows the UTC+9 timezone.

  • For a stress-free journey, arrive at the airport two hours ahead of international flights and one hour before domestic departures. This will give you plenty of time to catch your STL to ICN flight.

  • Flying during a peak time like July? Public holidays and other popular seasons can result in longer queues and delays at check-in and security. Play it safe and get there up to four hours before an international flight and two hours before domestic departures.

  • Think about adding a stopover when booking your ticket from St Louis Airport to Incheon International Airport. Just uncheck 'Direct flights only' to break up your journey, or even explore someplace new along the way. Here's where you can stop between STL and ICN:

    • Chicago O'Hare International Airport

    • Atlanta Hartsfield-Jackson Airport

    • Dallas Fort Worth International Airport

How to find the cheapest flights from St Louis Airport (STL) to Incheon International Airport (ICN)

  • At the moment, Rs123,527 is the cheapest price we've seen for a one-way St Louis Airport to Incheon International Airport flight. The best price for a return plane ticket is Rs260,639. Bear in mind that fares may change due to availability when booking.

  • It's a good idea to book as early as possible if you're looking for cheap tickets from STL to ICN. That's because airlines change prices based on demand, which tends to increase closer to departure.

  • Finding cheap flights from St Louis Airport to Incheon International Airport is more likely if you can be flexible with your travel dates. Use the 'Whole month' search tool to see the lowest fares across each month and snap up a great deal.

  • There's no need to check back in every day to find out if fares have gone down when you set up a Price Alert. We'll notify you the moment the price changes on cheap flights from STL to ICN.

  • Discover the right flight for you with the help of the filters. To see the 'Cheapest,' 'Fastest' or 'Best' flights from St Louis Airport to Incheon International Airport, use the 'Sort by' function. You can also filter results by airline, arrival and departure times, and number of stops.

Handy information about St Louis Airport (STL)

Arriving at Incheon International Airport (ICN)

Getting from Incheon International Airport (ICN) to central Seoul

  • Incheon International Airport to the centre of Seoul has a drive time of about 1 hour 5 minutes. It's approximately 48 kilometres away.

  • Getting to the centre by public transport will take you roughly 50 minutes.

When to fly to Incheon International Airport (ICN)

  • It's time to work out your dates for your flight from St Louis Airport to Incheon International Airport. August is the most popular month to head to Seoul. If you prefer a quieter vibe, go in March.

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

  • For cooler conditions, look for a cheap ticket from STL to ICN in January. Average temperatures are between -12ºC and 4ºC then.

Explore more of South Korea

  • You've done Seoul, now it's time to explore other parts of South Korea. Travel about 322 kilometres south-east to Busan to tick off its top sights. From Gamcheon Culture Village to Haeundae Beach and Beautiful View Busan - Diamond Bridge, your itinerary will be busy.

  • Incheon is another essential stop in South Korea and is around 56 kilometres west of Seoul. No trip is complete without a visit to INSPIRE Arena, Wangsan Beach and Seokmodo Natural Forest.

More travel options

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.