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Cheap flights from St Louis (STL) to Buenos Aires (AEP)

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0 Children (2~11)
0 Infants (0~2)
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How to find the cheapest flight from St Louis (STL) to Buenos Aires (AEP)

How to find the cheapest flight from St Louis (STL) to Buenos Aires (AEP)
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How to find the cheapest flight from St Louis (STL) to Buenos Aires (AEP)
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How to find the cheapest flight from St Louis (STL) to Buenos Aires (AEP)
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Cheap flights from St Louis to Buenos Aires in June , July 2026

30 Jun - 30 Jul $ 1,204.00
STL
St Louis
Frontier Airlines
2 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
Frontier Airlines
3 STOPS
STL
St Louis
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30 Jun - 30 Jul $ 1,294.00
STL
St Louis
Frontier Airlines
2 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
Frontier Airlines
3 STOPS
STL
St Louis
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30 Jun - 28 Jul $ 1,300.00
STL
St Louis
Frontier Airlines
2 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
Frontier Airlines
3 STOPS
STL
St Louis
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Last minute flights from St Louis to Buenos Aires

28 Jun - 02 Jul $ 1,461.00
STL
St Louis
Volaris
2 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
Volaris
3 STOPS
STL
St Louis
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27 Jun - 02 Jul $ 1,461.00
STL
St Louis
Volaris
2 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
Volaris
3 STOPS
STL
St Louis
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28 Jun - 01 Jul $ 1,617.00
STL
St Louis
Frontier Airlines
2 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
Frontier Airlines
3 STOPS
STL
St Louis
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One-way flights to Buenos Aires from St Louis

4:17 PM - 9:20 AM
Gol Transportes Aéreos
2 Stops
18h 43m
STL - AEP
$ 656
Kiwi
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6:30 AM - 9:15 PM
Avianca
2 Stops
21h 10m
STL - AEP
$ 670
Kiwi
Pick dates
6:30 AM - 9:15 PM
Avianca
2 Stops
21h 10m
STL - AEP
$ 670
Kiwi
Pick dates

How to find the cheapest flight from St Louis (STL) to Buenos Aires (AEP)

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