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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 May , June 2026

27 May - 17 Jun $ 1,397.00
STL
St Louis
Frontier Airlines
2 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
Frontier Airlines
2 STOPS
STL
St Louis
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29 May - 04 Jun $ 2,089.00
STL
St Louis
LATAM Airlines
2 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
LATAM Airlines
2 STOPS
STL
St Louis
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23 May - 04 Jun $ 2,133.00
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

27 May - 01 Jun $ 1,432.00
STL
St Louis
Volaris
2 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
Volaris
2 STOPS
STL
St Louis
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28 May - 01 Jun $ 1,440.00
STL
St Louis
Volaris
2 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
Volaris
2 STOPS
STL
St Louis
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25 May - 01 Jun $ 1,446.00
STL
St Louis
Volaris
2 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
Volaris
2 STOPS
STL
St Louis
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One-way flights to Buenos Aires from St Louis

6:00 AM - 9:15 PM
Avianca
2 Stops
21h 40m
STL - AEP
$ 688
Kiwi
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7:01 PM - 9:30 AM
LATAM Airlines
2 Stops
18h 59m
STL - AEP
$ 954
Kiwi
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12:59 PM - 1:15 AM
LATAM Airlines
2 Stops
16h 41m
STL - AEP
$ 998
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.