AirHint found the following cheapest return flights from Paris (CDG) to Buenos Aires (EZE) in September 2025 (see full year).

Return flights

12 Sep - 27 Sep	Avianca
10 Sep - 17 Sep	Avianca
02 Sep - 30 Sep	SWISS
18 Sep - 22 Sep	Avianca
14 Sep - 21 Sep	Avianca
08 Sep - 22 Sep	Avianca
10 Sep - 24 Sep	Avianca
18 Sep - 24 Sep	Avianca
03 Sep - 25 Sep	Avianca
11 Sep - 18 Sep	Avianca
11 Sep - 14 Oct	Delta
03 Sep - 03 Oct	Delta
07 Sep - 13 Oct	Avianca
23 Sep - 14 Oct	Delta
25 Sep - 09 Oct	Delta
26 Sep - 19 Oct	Delta
22 Sep - 11 Oct	Avianca
29 Sep - 19 Oct	Delta
27 Sep - 05 Oct	Delta
29 Sep - 02 Oct	Delta

Also check the deals for one-way flights from Paris to Buenos Aires in September.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Paris to Buenos Aires in September from $918

Return flights