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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 July , August 2026

27 Jul - 20 Aug $ 1,459.00
STL
St Louis
Frontier Airlines
2 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
Frontier Airlines
3 STOPS
STL
St Louis
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27 Jul - 02 Aug $ 2,107.00
STL
St Louis
LATAM Airlines
2 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
LATAM Airlines
2 STOPS
STL
St Louis
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27 Jul - 02 Aug $ 2,626.00
STL
St Louis
LATAM Airlines
2 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
LATAM Airlines
2 STOPS
STL
St Louis
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Last minute flights from St Louis to Buenos Aires

28 Jul - 31 Jul $ 1,884.00
STL
St Louis
LATAM Airlines
3 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
LATAM Airlines
2 STOPS
STL
St Louis
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27 Jul - 01 Aug $ 1,935.00
STL
St Louis
LATAM Airlines
2 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
LATAM Airlines
2 STOPS
STL
St Louis
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27 Jul - 31 Jul $ 1,935.00
STL
St Louis
LATAM Airlines
2 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
LATAM Airlines
2 STOPS
STL
St Louis
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One-way flights to Buenos Aires from St Louis

1:22 PM - 7:25 AM
LATAM Airlines
2 Stops
19h 8m
STL - AEP
$ 838
Kiwi
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1:22 PM - 6:35 AM
LATAM Airlines
2 Stops
18h 18m
STL - AEP
$ 845
Kiwi
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1:22 PM - 6:35 AM
LATAM Airlines
2 Stops
18h 18m
STL - AEP
$ 1,120
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.