Earn point on your loyalty program!arrow arc left

Cheap flights from St Louis (STL) to Busan (PUS)

Know your dates, get live prices in seconds
airplane logo

pin logo

calendar
Departure
calendar backward
Return
airplane logo
1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
Save up to 31%
Book Flight + Hotel at the same time

How to find the cheapest flight from St Louis (STL) to Busan (PUS)

How to find the cheapest flight from St Louis (STL) to Busan (PUS)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from St Louis (STL) to Busan (PUS)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from St Louis (STL) to Busan (PUS)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.

Cheap flights from St Louis to Busan in August , September 2026

27 Aug - 11 Sep $ 1,161.00
STL
St Louis
Air Canada
2 STOPS
PUS
Busan
PUS
Busan
Air Canada
2 STOPS
STL
St Louis
Pick dates
27 Aug - 11 Sep $ 1,165.00
STL
St Louis
Air Canada
2 STOPS
PUS
Busan
PUS
Busan
Air Canada
2 STOPS
STL
St Louis
Pick dates
27 Aug - 11 Sep $ 1,169.00
STL
St Louis
Air Canada
2 STOPS
PUS
Busan
PUS
Busan
Air Canada
2 STOPS
STL
St Louis
Pick dates

Last minute flights from St Louis to Busan

28 Aug - 02 Sep $ 1,422.00
STL
St Louis
Alaska Airlines
2 STOPS
PUS
Busan
PUS
Busan
Alaska Airlines
2 STOPS
STL
St Louis
Pick dates
29 Aug - 02 Sep $ 1,425.00
STL
St Louis
Alaska Airlines
2 STOPS
PUS
Busan
PUS
Busan
Alaska Airlines
2 STOPS
STL
St Louis
Pick dates
28 Aug - 02 Sep $ 1,429.00
STL
St Louis
Alaska Airlines
2 STOPS
PUS
Busan
PUS
Busan
Alaska Airlines
2 STOPS
STL
St Louis
Pick dates

One-way flights to Busan from St Louis

8:55 AM - 7:20 PM
Korean Air
2 Stops
22h 40m
STL - PUS
$ 617
Kiwi
Pick dates
8:55 AM - 7:20 PM
Korean Air
2 Stops
22h 40m
STL - PUS
$ 617
Kiwi
Pick dates
8:55 AM - 7:20 PM
Korean Air
2 Stops
22h 40m
STL - PUS
$ 620
Kiwi
Pick dates

How to find the cheapest flight from St Louis (STL) to Busan (PUS)

Related info for your journey
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from St Louis (STL) to Busan (PUS)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from St Louis (STL) to Busan (PUS)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.