STL - PUS

$1,623 Find Cheap Flights from St. Louis to Busan - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$1,623
Typical prices: $1,652-$1,978
Delta
Mon 12/10Mon 12/17
STL - PUS • 2 stops
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Booking Insights
Flight Deals

Cheap Flights from St. Louis to Busan (STL-PUS)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Busan

Thu, Dec 10 - Thu, Dec 17
Delta Logo
7:08 am - 8:10 amSTL  Lambert-St Louis-PUS Busan Gimhae
34h 02m2 stops Salt Lake City Incheon Intl
Delta Logo
12:00 pm - 12:46 amPUS  Busan Gimhae-STL Lambert-St Louis
27h 46m2 stops Incheon Intl Salt Lake City
$1,623Delta
Thu, Dec 10 - Thu, Dec 17
Multiple Airlines Logo
2:27 pm - 8:10 amSTL  Lambert-St Louis-PUS Busan Gimhae
26h 43m2 stops Las Vegas Harry Reid Intl Incheon Intl
Multiple Airlines Logo
10:45 am - 3:26 pmPUS  Busan Gimhae-STL Lambert-St Louis
43h 41m3 stops Tokyo Narita Los Angeles Denver Intl
$2,283Multiple Airlines
Booking Insights

Price, demand and travel trends for St. Louis to Busan flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from St. Louis to Busan?

Round-trip flights from St. Louis to Busan typically range from $1,652 to $1,978. The lowest price found in the past 5 days was $1,623, on Delta.

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Key details for St. Louis to Busan flights

Cheapest flight

$1,623
Round-trip flight from St. Louis to Busan

When to book flights from St. Louis to Busan

Are your dates flexible? Find out the best times to travel from St. Louis to Busan based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your St. Louis to Busan flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from St. Louis to Busan?

    Only Economy Class is available on flights from St. Louis to Busan.

  • Do I need a passport to fly from St. Louis to Busan?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • Have flight prices from St. Louis to Busan changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route varied from about $1,623 to $2,283. That means the highest observed fare was about 40% higher than the lowest one.

  • What car rental options are available at Busan Gimhae Airport (PUS)?

    Busan Gimhae Airport (PUS) hosts 5 major car rental companies, with daily rates averaging $70 for economy cars. Top options include:

    • Hi Rent
    • Yesaway
    • GREEN MOTION
    • LOTTE rent-a-car
    • Avis

  • Which airports can I use when flying from St. Louis to Busan?

    Flights from St. Louis to Busan usually depart from Lambert-St Louis (STL) and arrive at Busan Gimhae (PUS).

  • Can I save money by using flexible dates for flights from St. Louis to Busan?

    Yes. Flexible dates can save you up to 32% on flights from St. Louis to Busan. Wednesday is the cheapest departure day at $1,348 round-trip on average, while Monday is the most expensive at $1,978, a difference of $630.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What is the time difference between St. Louis and Busan?

    Busan is 14 hours ahead of St. Louis (Korean Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Busan?

    Some of the most popular sights in Busan are Haeundae Beach, Gwangalli Beach and Songdo Beach. These are among the most viewed places in Busan on KAYAK.

Your guide to booking St. Louis to Busan flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Wednesday departure and avoid flying on Monday. On this route, Wednesday flights average $1,348, about $630 less than Monday fares (32% savings) based on the last 12 months.
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Busan Gimhae Airport.

    • Hotel Airport

More options for your flight from St. Louis to Busan

Complete your trip to Busan with a hotel stay or car rental

Car rentals in Busan
Hotels in Busan
Vacations in Busan