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

27 Apr - 19 May $ 1,287.00
STL
St Louis
Alaska Airlines
2 STOPS
PUS
Busan
PUS
Busan
Alaska Airlines
3 STOPS
STL
St Louis
Pick dates
07 Apr - 03 May $ 2,884.00
STL
St Louis
Alaska Airlines
2 STOPS
PUS
Busan
PUS
Busan
Alaska Airlines
2 STOPS
STL
St Louis
Pick dates
07 Apr - 03 May $ 3,123.00
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

27 Apr - 01 May $ 1,542.00
STL
St Louis
Frontier Airlines
2 STOPS
PUS
Busan
PUS
Busan
Frontier Airlines
3 STOPS
STL
St Louis
Pick dates
27 Apr - 01 May $ 1,570.00
STL
St Louis
Frontier Airlines
2 STOPS
PUS
Busan
PUS
Busan
Frontier Airlines
3 STOPS
STL
St Louis
Pick dates
15 Apr - 30 Apr $ 1,865.00
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

3:21 PM - 5:10 PM
Jin Air
3 Stops
37h 54m
STL - PUS
$ 664
Kiwi
Pick dates
3:21 PM - 2:40 PM
EVA Air
2 Stops
36h 39m
STL - PUS
$ 682
Kiwi
Pick dates
3:50 PM - 7:55 AM
China Airlines
2 Stops
29h 25m
STL - PUS
$ 1,512
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.