Cheap flights from Seoul to St Louis

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Flight deals from Seoul to St Louis

Looking for a cheap last-minute deal or the best round-trip flight from Seoul to St Louis Airport? If you want to travel next month, round-trip fares start from $1,356. Find the lowest prices on one-way and round-trip tickets right here.

St Louis.$1,227 per passenger.Departing Thu, Jul 23, returning Wed, Aug 5.Round-trip flight with Hong Kong Airlines and Frontier Airlines.Outbound indirect flight with Hong Kong Airlines, departing from Incheon International on Thu, Jul 23, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departing from St Louis on Wed, Aug 5, arriving in Incheon International.Price includes taxes and charges.From $1,227, select.

St Louis.$1,349 per passenger.Departing Fri, Oct 2, returning Sat, Oct 17.Round-trip flight with Air Canada.Outbound indirect flight with Air Canada, departing from Incheon International on Fri, Oct 2, arriving in St Louis.Inbound indirect flight with Air Canada, departing from St Louis on Sat, Oct 17, arriving in Incheon International.Price includes taxes and charges.From $1,349, select.

St Louis.$1,356 per passenger.Departing Sat, Jul 11, returning Sat, Jul 25.Round-trip flight with T'way Air and WestJet.Outbound indirect flight with T'way Air, departing from Incheon International on Sat, Jul 11, arriving in St Louis.Inbound indirect flight with WestJet, departing from St Louis on Sat, Jul 25, arriving in Incheon International.Price includes taxes and charges.From $1,356, select.

St Louis.$1,378 per passenger.Departing Mon, Nov 30, returning Mon, Dec 7.Round-trip flight with Air Canada.Outbound indirect flight with Air Canada, departing from Incheon International on Mon, Nov 30, arriving in St Louis.Inbound indirect flight with Air Canada, departing from St Louis on Mon, Dec 7, arriving in Incheon International.Price includes taxes and charges.From $1,378, select.

St Louis.$1,384 per passenger.Departing Tue, Jun 30, returning Mon, Jul 6.Round-trip flight with Eastar Jet and WestJet.Outbound indirect flight with Eastar Jet, departing from Incheon International on Tue, Jun 30, arriving in St Louis.Inbound indirect flight with WestJet, departing from St Louis on Mon, Jul 6, arriving in Incheon International.Price includes taxes and charges.From $1,384, select.

St Louis.$1,393 per passenger.Departing Tue, Jun 9, returning Wed, Jun 17.Round-trip flight with Air Canada.Outbound indirect flight with Air Canada, departing from Incheon International on Tue, Jun 9, arriving in St Louis.Inbound indirect flight with Air Canada, departing from St Louis on Wed, Jun 17, arriving in Incheon International.Price includes taxes and charges.From $1,393, select.

St Louis.$1,394 per passenger.Departing Mon, Feb 1, returning Mon, Feb 22.Round-trip flight with Air Canada.Outbound indirect flight with Air Canada, departing from Incheon International on Mon, Feb 1, arriving in St Louis.Inbound indirect flight with Air Canada, departing from St Louis on Mon, Feb 22, arriving in Incheon International.Price includes taxes and charges.From $1,394, select.

St Louis.$1,398 per passenger.Departing Mon, Dec 21, returning Sun, Dec 27.Round-trip flight with Air Canada.Outbound indirect flight with Air Canada, departing from Incheon International on Mon, Dec 21, arriving in St Louis.Inbound indirect flight with Air Canada, departing from St Louis on Sun, Dec 27, arriving in Incheon International.Price includes taxes and charges.From $1,398, select.

St Louis.$1,399 per passenger.Departing Mon, Sep 21, returning Sat, Sep 26.Round-trip flight with Air Canada.Outbound indirect flight with Air Canada, departing from Incheon International on Mon, Sep 21, arriving in St Louis.Inbound indirect flight with Air Canada, departing from St Louis on Sat, Sep 26, arriving in Incheon International.Price includes taxes and charges.From $1,399, select.

St Louis.$1,402 per passenger.Departing Tue, Sep 22, returning Fri, Oct 16.Round-trip flight with Peach and WestJet.Outbound indirect flight with Peach, departing from Incheon International on Tue, Sep 22, arriving in St Louis.Inbound indirect flight with WestJet, departing from St Louis on Fri, Oct 16, arriving in Incheon International.Price includes taxes and charges.From $1,402, select.

St Louis.$1,405 per passenger.Departing Sun, Oct 25, returning Sun, Nov 15.Round-trip flight with Air Canada.Outbound indirect flight with Air Canada, departing from Incheon International on Sun, Oct 25, arriving in St Louis.Inbound indirect flight with Air Canada, departing from St Louis on Sun, Nov 15, arriving in Incheon International.Price includes taxes and charges.From $1,405, select.

St Louis.$1,412 per passenger.Departing Sun, Aug 16, returning Sun, Aug 23.Round-trip flight with Air Premia and Frontier Airlines.Outbound indirect flight with Air Premia, departing from Incheon International on Sun, Aug 16, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departing from St Louis on Sun, Aug 23, arriving in Incheon International.Price includes taxes and charges.From $1,412, select.

St Louis.$1,421 per passenger.Departing Sun, Nov 1, returning Sat, Nov 14.Round-trip flight with Air Canada.Outbound indirect flight with Air Canada, departing from Incheon International on Sun, Nov 1, arriving in St Louis.Inbound indirect flight with Air Canada, departing from St Louis on Sat, Nov 14, arriving in Incheon International.Price includes taxes and charges.From $1,421, select.

St Louis.$1,433 per passenger.Departing Wed, Jan 13, returning Wed, Jan 27.Round-trip flight with Air Canada.Outbound indirect flight with Air Canada, departing from Incheon International on Wed, Jan 13, arriving in St Louis.Inbound indirect flight with Air Canada, departing from St Louis on Wed, Jan 27, arriving in Incheon International.Price includes taxes and charges.From $1,433, select.

St Louis.$1,461 per passenger.Departing Thu, Dec 24, returning Sat, Jan 2.Round-trip flight with Air Canada.Outbound indirect flight with Air Canada, departing from Incheon International on Thu, Dec 24, arriving in St Louis.Inbound indirect flight with Air Canada, departing from St Louis on Sat, Jan 2, arriving in Incheon International.Price includes taxes and charges.From $1,461, select.

St Louis.$1,470 per passenger.Departing Sat, Dec 19, returning Fri, Feb 26.Round-trip flight with Air Canada.Outbound indirect flight with Air Canada, departing from Incheon International on Sat, Dec 19, arriving in St Louis.Inbound indirect flight with Air Canada, departing from St Louis on Fri, Feb 26, arriving in Incheon International.Price includes taxes and charges.From $1,470, select.

Find the cheapest month to fly from Seoul to St Louis

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seoul to St Louis flights are currently cheapest in October.

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Seoul to St Louis: Alternative routes

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

Seoul to St Louis: Flight information

The things to know before you go.

Cheapest flight found	$1,227
Cheapest month to fly	July

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

How much are round-trip flights from Seoul to St Louis?

The best price we found for a round-trip flight from Seoul to St Louis is $1,227. 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.

Which airlines fly direct from Seoul to St Louis?

Currently, there are no airlines that fly direct from Seoul to St Louis. But we found flights with one stop from $1,227.

How many flights are there a week from Seoul to St Louis?

There are no flights flying from Seoul to St Louis, as of June 2026.

When is the cheapest time to fly from Seoul to St Louis?

The cheapest month to fly from Seoul to St Louis is usually July.

Which upcoming date is cheapest to fly from Seoul to St Louis Airport on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seoul to St Louis Airport on Thursday, July 23, 2026.

Can I get a direct flight from Seoul to St Louis Airport?

No airlines currently offer direct flights between Seoul and St Louis Airport. Most routes have one or more stops.

How can I find the best flight deal to St Louis?

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 St Louis 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.

When is the best time to book flights to St Louis?

We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to St Louis is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly with from Seoul to St Louis?

The cheapest airline that flies to St Louis is Hong Kong Airlines.

Traveling from Seoul to St Louis Lambert International Airport (STL): What you need to know

The timezone in St Louis is UTC-6, which is 15 hours behind Seoul. St Louis Lambert International Airport is located in St Louis.
Arriving two hours before an international flight and one hour ahead of a domestic departure are tried-and-true travel tips. Be at the airport with enough time to catch your flight from Seoul to STL.
You'll likely experience longer queues in popular months such as January and other peak seasons. Arriving up to four hours in advance for an international flight and two hours for domestic departures will help ensure a smooth travel experience.

Airports in Seoul

Seoul Incheon International Airport (ICN)

Think about adding a stopover to find cheap flights from Seoul to STL. Just uncheck 'Direct flights only' when searching for departures from Seoul Incheon International Airport (ICN). Break up your trip (and maybe get a better deal) by stopping at one of these popular options:
- Chicago O'Hare International Airport (ORD)
- Seattle-Tacoma International Airport (SEA)
- San Francisco International Airport (SFO)
ICN is around 48 kilometers from central Seoul. If you're driving, catching a cab or ride-sharing from the center, it'll take 1 hour 5 minutes or so to get there, depending on traffic conditions. If you're planning to take public transport, expect the journey time to be around 50 minutes.
Booked an early flight from Seoul to St Louis Lambert International Airport? Avoid the hassle of rushing to the terminal (and get some extra shut-eye) by staying at one of these stays near Seoul Incheon International Airport:
When it comes to the on-time performance of Seoul Incheon International Airport, 74% of flights arrive within the scheduled time frame.

Seoul Gimpo International Airport (GMP)

GMP is around 16 kilometers from central Seoul. It'll take you 30 minutes or so to get to the airport by car from the city center. Public transport takes approximately 35 minutes.
Kick off your vacation early with an additional night away from home. Before catching your Seoul to STL flight, unwind in one of these hotels close to Seoul Gimpo International Airport:
Seoul Gimpo International Airport has a reputation for reliability and timeliness. 80% of flights out of here make it to their final destination as planned.

About St Louis Lambert International Airport (STL)

If you're arriving on a late flight from Seoul to St Louis Lambert International Airport, few things beat the convenience of staying close to the terminal. Grab your luggage from the carousel and then be showered and relaxing soon after at one of these hotels near STL:
To get the best deal, book your vehicle around one week ahead of your Seoul to St Louis Lambert International Airport flight.
You'll find STL at 10701 Lambert International Blvd..

Getting from St Louis Lambert International Airport (STL) to central St Louis

From St Louis Lambert International Airport, central St Louis is around 24 kilometers away. It takes about 25 minutes to get to the city center by car.
It takes around 30 minutes if you're traveling on public transport.

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

The cheapest price we've found for a one-way ticket from Seoul to St Louis Lambert International Airport is $517. For a return flight on this route, the best price is $1,227. Depending on when you want to go and the availability, these fares can change.
Booking early is often the key to finding a cheap flight from Seoul to STL. Fares tend to rise as seats fill up, so the closer your departure date, the more you'll likely pay.
If you're flexible with your travel plans, try using the 'Whole month' search tool. It'll give you the lowest price across every month when searching for your Seoul to St Louis Lambert International Airport ticket.
Save time searching for cheap plane tickets from Seoul to STL by creating a Price Alert. We'll send you an email or notification through the app when a lower fare pops up.
Lock in a cheap flight from Seoul to St Louis Lambert International Airport by using filters. Choose your preferred duration, departure time and airlines, then sort the results by 'Cheapest' for the best deals.

The best time to fly from Seoul to St Louis Lambert International Airport (STL)

It's time to work out your travel dates for your flight from Seoul to St Louis Lambert International Airport (STL). July is the peak month for travel to St Louis. If you prefer a quieter vibe, think about going in December.
Lock in a Seoul to STL plane ticket departing in July if you want to explore the city during its warmest month. You can expect temperatures in St Louis to range from 17ºC (63ºF) to 33ºC (91ºF).
If you want cooler conditions, search for a cheap ticket from Seoul to St Louis Lambert International Airport in January when temperatures are between -7ºC (19ºF) and 8ºC (46ºF).

More about St Louis

Once you've booked your flight from Seoul to St Louis Lambert International Airport, find a hotel that puts you in a great location. Make one of these options your base for exploring St Louis:
Your St Louis visit should come with a side of sightseeing. Big-name attractions that belong on your itinerary include The Gateway Arch, Saint Louis Arch and Museum at the Gateway Arch.

Explore more of the United States

Evansville is just one of the many places in the United States waiting to be discovered once you've taken in the sights of St Louis. Around 257 kilometers away to the east, top sights here include Mesker Park Zoo, Riverfront Park and Evansville Museum of Arts, History & Science.
If you're eager to discover another well-known destination in the United States, head for Columbia, roughly 177 kilometers west of St Louis. Museum of Art and Archaeology, Mizzou Botanic Garden and Francis Quadrangle are key reasons to visit.