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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 November , December 2026

21 Nov - 09 Dec $ 1,434.00
STL
St Louis
Frontier Airlines
3 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
Frontier Airlines
2 STOPS
STL
St Louis
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11 Nov - 07 Dec $ 2,933.00
STL
St Louis
Air Canada
2 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
Air Canada
2 STOPS
STL
St Louis
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13 Nov - 07 Dec $ 2,939.00
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

21 Nov - 01 Dec $ 1,431.00
STL
St Louis
Frontier Airlines
3 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
Frontier Airlines
3 STOPS
STL
St Louis
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21 Nov - 01 Dec $ 1,466.00
STL
St Louis
Frontier Airlines
3 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
Frontier Airlines
3 STOPS
STL
St Louis
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19 Nov - 01 Dec $ 1,575.00
STL
St Louis
Frontier Airlines
3 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

6:00 AM - 6:30 AM
Aerolineas Argentinas
3 Stops
22h 50m
STL - AEP
$ 675
Kiwi
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4:05 PM - 7:35 PM
Aerolineas Argentinas
2 Stops
26h 35m
STL - AEP
$ 1,705
Kiwi
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4:05 PM - 3:35 PM
Aerolineas Argentinas
2 Stops
22h 35m
STL - AEP
$ 1,708
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.