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$1,478+ Cheap flights from St. Louis (STL) to Busan (PUS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/30. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PUS
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
1 adult, Economy
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Cheap flight deals from St. Louis to Busan

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Busan (PUS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$2,042
(Booking.com)
Provider with most accurate pricing for Lambert-St Louis-Busan Gimhae flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Busan Gimhae flights.
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From Lambert-St Louis to Busan Gimhae
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Find flight deals from St. Louis to Busan

Cheapest flights from St. Louis to Busan
Explore the most affordable flight options available from St. Louis to Busan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.

This Expedia deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/306:44 amSTL - PUS
2 stops38h 31mMultiple Airlines
Tue 4/18:00 pmPUS - STL
2 stops41h 59mMultiple Airlines
Deal found 3/26$1,478
This Jetabroad deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/306:15 amSTL - PUS
2 stops25h 20mJapan Airlines
Tue 4/16:00 pmPUS - STL
3 stops37h 59mJapan Airlines
Deal found 3/26$6,215

Cheapflights Fare Finder

Customize your flight search to find flights from St. Louis to Busan that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 28, 2025.
Use the filters below to find and compare flights from St. Louis to Busan that are best for you.

Fly from

St. Louis

Fly to

Busan

Route

Depart

Return

Price

St. LouisBusan

STL - PUS

STLPUS

Lambert-St Louis

Sun 7/20

4:00 pm-8:45 pm

2 stops38h 45m

Busan Gimhae

Sat 7/26

7:15 pm-7:40 pm

2 stops62h 25m

$2,042

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Compare providers for flights from St. Louis to Busan

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Busan in March.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Busan flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Busan flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Busan flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Busan flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Busan flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from St. Louis to Busan

Have a flexible travel schedule? Discover the best time to fly to Busan from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Busan

Rainfall in Busan by month

Plan your trip to Busan by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Busan ranges from 0.9 - 10.2 inches per month. July is typically the wettest month, when rainfall can reach 10.2 in. December is typically the driest time to visit Busan when rainfall is around 0.9 in.

Temperature in Busan by month

Plan your trip to Busan by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Busan, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Busan. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from St. Louis to Busan that include hotel bookings?

    Yes. In addition to deals on St. Louis to Busan flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Busan?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Busan.

  • Can I find deals for business class flights from St. Louis to Busan?

    Yes. Cheapflights offers flight deals from St. Louis to Busan by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Busan?

    Currently, August is the cheapest month in which you can book a flight from St. Louis to Busan (average of $1,166). Flying from St. Louis to Busan in December is currently the most expensive (average of $2,247). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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