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

Return flights

10 Sep - 22 Oct	Air Canada
05 Sep - 19 Sep	Delta
14 Sep - 29 Sep	Delta
02 Sep - 24 Sep	Delta
14 Sep - 28 Sep	Delta
05 Sep - 12 Sep	Delta
14 Sep - 21 Sep	Delta
01 Sep - 24 Sep	Delta
02 Sep - 29 Sep	Delta
01 Sep - 30 Sep	Delta
11 Sep - 25 Sep	Delta
01 Sep - 04 Oct	Delta
07 Sep - 04 Oct	Delta
18 Sep - 06 Oct	Delta
22 Sep - 07 Oct	Delta
01 Sep - 07 Oct	Delta
18 Sep - 04 Oct	Delta
23 Sep - 20 Oct	Air Canada
24 Sep - 15 Oct	Delta
24 Sep - 16 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 835€

Return flights