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

Return flights

18 Sep - 07 Oct	Delta
05 Sep - 30 Sep	Delta
08 Sep - 21 Sep	Delta
06 Sep - 30 Sep	Delta
14 Sep - 21 Sep	Delta
02 Sep - 14 Sep	Delta
17 Sep - 15 Oct	Air Canada
23 Sep - 13 Oct	Air Canada
18 Sep - 06 Oct	Delta
06 Sep - 13 Sep	Delta
15 Sep - 30 Sep	Delta
02 Sep - 11 Sep	Delta
18 Sep - 12 Oct	Delta
18 Sep - 04 Oct	Delta
18 Sep - 05 Oct	Delta
18 Sep - 23 Sep	Delta
08 Sep - 28 Sep	Delta
24 Sep - 08 Oct	Delta
18 Sep - 08 Oct	Delta
14 Sep - 02 Oct	Delta

Also check the deals for one-way flights from Frankfurt 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 Frankfurt to Buenos Aires in September from $985

Return flights