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ICN (Seoul) to STL (St. Louis) Flights $728.66

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Cheap ICN to STL Flights

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Interesting Facts About Flights from Seoul to St. Louis (ICN to STL)

Question : Can you cut down on flight costs by changing the day of the week you travel to Saint Louis?
Answer : Friday is your cheapest day to fly in August. Having flexibility in your travel plans means you can save more, so be sure to plan ahead when possible.

Question : Should you take that vacation to Saint Louis in the next 30 days?
Answer : As of Jul 24th, the best day for deals to Saint Louis (STL) is Aug 5th. It costs $1,086, which is 46% below the average price to book the same route.

Question : How many days should you spend in Saint Louis?
Answer : Travelers from ICN to STL stay 23 days on average.

Question : Over the coming months, which airline is getting their passengers to Lambert-St. Louis International Airport (STL) round-trip the cheapest?
Answer : American Airlines is your best bet for finding that coveted low fare. They're offering fares as low as $937, while prices for other flights are as high as $4,092.

Question : Do prices fluctuate more for this route than others?
Answer : Ranging anywhere from $937 to $4,092, prices for ICN to STL do change much more than most routes from the Republic of Korea. The further out you book a route, the more likely you are to save.