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 April , May 2026

20 Apr - 19 May $ 1,142.00
STL
St Louis
Alaska Airlines
3 STOPS
PUS
Busan
PUS
Busan
Alaska Airlines
3 STOPS
STL
St Louis
Pick dates
09 Apr - 07 May $ 2,195.00
STL
St Louis
Alaska Airlines
2 STOPS
PUS
Busan
PUS
Busan
Alaska Airlines
2 STOPS
STL
St Louis
Pick dates
09 Apr - 07 May $ 2,505.00
STL
St Louis
Alaska Airlines
2 STOPS
PUS
Busan
PUS
Busan
Alaska Airlines
2 STOPS
STL
St Louis
Pick dates

Last minute flights from St Louis to Busan

20 Apr - 01 May $ 1,404.00
STL
St Louis
Frontier Airlines
3 STOPS
PUS
Busan
PUS
Busan
Frontier Airlines
3 STOPS
STL
St Louis
Pick dates
20 Apr - 01 May $ 1,418.00
STL
St Louis
Frontier Airlines
3 STOPS
PUS
Busan
PUS
Busan
Frontier Airlines
3 STOPS
STL
St Louis
Pick dates
27 Apr - 01 May $ 1,556.00
STL
St Louis
Frontier Airlines
2 STOPS
PUS
Busan
PUS
Busan
Frontier Airlines
3 STOPS
STL
St Louis
Pick dates

One-way flights to Busan from St Louis

9:55 PM - 11:05 AM
Tway Airlines
3 Stops
49h 20m
STL - PUS
$ 541
Kiwi
Pick dates
7:00 AM - 6:15 AM
China Airlines
2 Stops
36h 30m
STL - PUS
$ 1,080
Kiwi
Pick dates
4:20 PM - 6:15 AM
China Airlines
2 Stops
27h 10m
STL - PUS
$ 1,236
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.