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

Return flights

02 Sep - 30 Sep	Delta
14 Sep - 28 Sep	Delta
01 Sep - 22 Sep	Delta
14 Sep - 21 Sep	Delta
15 Sep - 25 Sep	Delta
17 Sep - 30 Sep	Delta
01 Sep - 21 Sep	Delta
12 Sep - 28 Sep	Delta
08 Sep - 21 Sep	Delta
06 Sep - 22 Sep	Delta
15 Sep - 13 Oct	Delta
15 Sep - 06 Oct	Delta
01 Sep - 07 Oct	Delta
01 Sep - 21 Oct	Delta
07 Sep - 05 Oct	Delta
17 Sep - 07 Oct	Delta
16 Sep - 03 Oct	Delta
15 Sep - 14 Oct	Delta
12 Sep - 14 Oct	Delta
09 Sep - 13 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 846€

Return flights