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Cheap flights from Chicago (CHI) 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 Chicago (CHI) to Buenos Aires (AEP)

How to find the cheapest flight from Chicago (CHI) to Buenos Aires (AEP)
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How to find the cheapest flight from Chicago (CHI) to Buenos Aires (AEP)
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How to find the cheapest flight from Chicago (CHI) to Buenos Aires (AEP)
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Cheap flights from Chicago to Buenos Aires in March , April 2026

31 Mar - 23 Apr $ 716.00
CHI
Chicago
Frontier Airlines
2 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
Frontier Airlines
3 STOPS
CHI
Chicago
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31 Mar - 20 Apr $ 787.00
CHI
Chicago
Frontier Airlines
2 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
Frontier Airlines
2 STOPS
CHI
Chicago
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31 Mar - 16 Apr $ 810.00
CHI
Chicago
Allegiant Air
2 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
Allegiant Air
2 STOPS
CHI
Chicago
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Last minute flights from Chicago to Buenos Aires

24 Mar - 01 Apr $ 954.00
CHI
Chicago
Spirit Airlines
2 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
Spirit Airlines
2 STOPS
CHI
Chicago
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24 Mar - 01 Apr $ 1,003.00
CHI
Chicago
Spirit Airlines
2 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
Spirit Airlines
2 STOPS
CHI
Chicago
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23 Mar - 01 Apr $ 1,019.00
CHI
Chicago
Spirit Airlines
2 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
Spirit Airlines
2 STOPS
CHI
Chicago
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One-way flights to Buenos Aires from Chicago

7:56 AM - 1:40 AM
Sky Airline
2 Stops
17h 44m
CHI - AEP
$ 343
Kiwi
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11:20 PM - 9:15 PM
Avianca
1 Stops
28h 20m
CHI - AEP
$ 646
Kiwi
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9:15 AM - 9:15 PM
Avianca
2 Stops
18h 25m
CHI - AEP
$ 723
Kiwi
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How to find the cheapest flight from Chicago (CHI) to Buenos Aires (AEP)

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