Earn point on your loyalty program!arrow arc left

Cheap flights from St Louis (STL) to Mendoza (MDZ)

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 Mendoza (MDZ)

How to find the cheapest flight from St Louis (STL) to Mendoza (MDZ)
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 Mendoza (MDZ)
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 Mendoza (MDZ)
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 Mendoza in September , October 2026

28 Sep - 17 Oct $ 1,328.00
STL
St Louis
Frontier Airlines
3 STOPS
MDZ
Mendoza
MDZ
Mendoza
Frontier Airlines
2 STOPS
STL
St Louis
Pick dates
28 Sep - 17 Oct $ 1,472.00
STL
St Louis
Frontier Airlines
3 STOPS
MDZ
Mendoza
MDZ
Mendoza
Frontier Airlines
2 STOPS
STL
St Louis
Pick dates
29 Sep - 17 Oct $ 1,586.00
STL
St Louis
Frontier Airlines
2 STOPS
MDZ
Mendoza
MDZ
Mendoza
Frontier Airlines
2 STOPS
STL
St Louis
Pick dates

Last minute flights from St Louis to Mendoza

28 Sep - 02 Oct $ 1,443.00
STL
St Louis
Frontier Airlines
3 STOPS
MDZ
Mendoza
MDZ
Mendoza
Frontier Airlines
3 STOPS
STL
St Louis
Pick dates
28 Sep - 01 Oct $ 1,618.00
STL
St Louis
Frontier Airlines
3 STOPS
MDZ
Mendoza
MDZ
Mendoza
Frontier Airlines
3 STOPS
STL
St Louis
Pick dates
28 Sep - 01 Oct $ 1,762.00
STL
St Louis
Frontier Airlines
3 STOPS
MDZ
Mendoza
MDZ
Mendoza
Frontier Airlines
3 STOPS
STL
St Louis
Pick dates

One-way flights to Mendoza from St Louis

5:19 PM - 1:49 PM
Sky Airline
3 Stops
43h 31m
STL - MDZ
$ 687
Kiwi
Pick dates
5:19 PM - 8:15 AM
JetSMART
3 Stops
38h 55m
STL - MDZ
$ 749
Kiwi
Pick dates
5:19 PM - 3:37 PM
Copa Airlines
3 Stops
29h 3m
STL - MDZ
$ 831
Kiwi
Pick dates

How to find the cheapest flight from St Louis (STL) to Mendoza (MDZ)

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 Mendoza (MDZ)
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 Mendoza (MDZ)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.