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

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1 Adults (11+)
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 October , November 2026

31 Oct - 09 Nov $ 1,425.00
STL
St Louis
Air Canada
3 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
Air Canada
2 STOPS
STL
St Louis
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20 Oct - 09 Nov $ 1,474.00
STL
St Louis
Air Canada
2 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
Air Canada
2 STOPS
STL
St Louis
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24 Oct - 09 Nov $ 1,485.00
STL
St Louis
Air Canada
2 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
Air Canada
2 STOPS
STL
St Louis
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Last minute flights from St Louis to Buenos Aires

20 Oct - 02 Nov $ 1,524.00
STL
St Louis
Volaris
2 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
Volaris
3 STOPS
STL
St Louis
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20 Oct - 02 Nov $ 1,540.00
STL
St Louis
Volaris
2 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
Volaris
3 STOPS
STL
St Louis
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20 Oct - 01 Nov $ 1,682.00
STL
St Louis
Air Canada
2 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
Air Canada
2 STOPS
STL
St Louis
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One-way flights to Buenos Aires from St Louis

6:20 AM - 6:30 AM
Aerolineas Argentinas
3 Stops
23h 30m
STL - AEP
$ 683
Kiwi
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6:30 AM - 9:15 PM
Avianca
2 Stops
21h 10m
STL - AEP
$ 718
Kiwi
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6:30 AM - 9:15 PM
Avianca
2 Stops
21h 10m
STL - AEP
$ 730
Kiwi
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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.