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

Return flights

10 Sep - 28 Sep	Delta
10 Sep - 21 Sep	Delta
17 Sep - 28 Sep	Delta
07 Sep - 21 Sep	Delta
07 Sep - 24 Sep	Delta
07 Sep - 27 Sep	Delta
15 Sep - 26 Sep	Delta
05 Sep - 22 Sep	Delta
07 Sep - 30 Sep	Delta
01 Sep - 30 Sep	SWISS
29 Sep - 13 Oct	Delta
16 Sep - 05 Oct	Delta
11 Sep - 02 Oct	Delta
02 Sep - 02 Oct	Delta
17 Sep - 01 Oct	Delta
29 Sep - 06 Oct	Delta
10 Sep - 03 Oct	Lufthansa
07 Sep - 21 Oct	Lufthansa
29 Sep - 27 Oct	Delta
11 Sep - 01 Oct	SWISS

Also check the deals for one-way flights from Barcelona 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 Barcelona to Buenos Aires in September from 740€

Return flights