AirHint found the following cheapest return flights from Frankfurt (FRA) to Buenos Aires (EZE) in September 2026 (see full year).

Return flights

07 Sep - 28 Sep	Delta
01 Sep - 20 Sep	Delta
10 Sep - 23 Sep	Delta
08 Sep - 16 Sep	Delta
09 Sep - 23 Sep	Delta
07 Sep - 21 Sep	Delta
11 Sep - 22 Sep	Delta
09 Sep - 16 Sep	Delta
02 Sep - 23 Sep	United
10 Sep - 13 Sep	Delta
28 Sep - 12 Oct	Delta
28 Sep - 19 Oct	Delta
29 Sep - 13 Oct	Delta
21 Sep - 12 Oct	Delta
28 Sep - 14 Oct	Delta
30 Sep - 12 Oct	Delta
11 Sep - 03 Oct	Delta
14 Sep - 10 Oct	LATAM Airlines Group
20 Sep - 09 Oct	Delta
26 Sep - 17 Oct	easyJet

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 $1000

Return flights