Cheap Flights from St Louis Airport to Seoul from $844 Roundtrip

Flight deals from St Louis Airport to Seoul

Looking for cheap flights from St Louis Airport to Seoul, or a last-minute trip? Find the cheapest prices on one-way and round-trip flights right here.

Seoul.$844 per passenger.Departing Sat, Jan 31, returning Wed, Feb 18.Round-trip flight with United.Outbound indirect flight with United, departing from St Louis on Sat, Jan 31, arriving in Incheon International.Inbound indirect flight with United, departing from Incheon International on Wed, Feb 18, arriving in St Louis.Price includes taxes and charges.From $844, select.

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Flying from St Louis Airport to Seoul

Arm yourself with these facts on the fly.

Cheapest flight found	$844
Cheapest month to fly	January

How to find cheap flights from St Louis Airport to Seoul

We've compared the best online travel agents and flight providers on the internet to find the cheapest plane tickets from St Louis Airport to Seoul. Other savvy travelers recently found round-trip flights from $844 and one-way tickets from $423. Ready to join them? Here are a few tips to help you do it the smart way.

Fly in January

The cheapest time to fly from St Louis Airport to Seoul is currently January.

Flex your dates for the best rates

If you’re flexible on your departure dates, you can use Skyscanner's whole month tool to find the cheapest day of the year to fly from St Louis Airport to anywhere you choose in Seoul.

Watch as flight prices go up and down

With Price Alerts, we'll let you know when flight prices from St Louis Airport to your chosen airport in Seoul go up or down so you can book when the time is just right.

Relax – these are fee-free plane tickets

With us, there are no added fees – the Seoul Airport to Seoul flight price you see when you search with us is what you pay to the provider.

Frequently asked questions

What is the average price of a flight from St Louis Airport to Seoul?

We looked at all of the upcoming round-trip flights from St Louis Airport to Seoul we could find over the next 12 months. It looks like $844 is the best price. This is good, compared to the average Seoul ticket price of $844.

What is the cheapest month to fly from St Louis Airport to Seoul?

The cheapest month to fly from St Louis Airport to Seoul is currently January.

On which upcoming date is it cheapest to fly from St Louis Airport to Seoul?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from St Louis Airport to Seoul on Saturday, January 31, 2026.

If I'm flying from St Louis Airport, where in Seoul is cheapest to fly to?

If you're flying from St Louis, the cheapest city in Seoul to fly into is Seoul. The cheapest airport serving Seoul at the moment is Incheon International.