AirHint found the following cheapest return flights from Zurich (ZRH) to Buenos Aires (AEP) in September 2025 (see full year).

Return flights

15 Sep - 15 Oct	Air Europa
22 Sep - 06 Oct	easyJet
23 Sep - 06 Oct	SWISS
23 Sep - 05 Oct	SWISS
16 Sep - 23 Sep	Air Europa
16 Sep - 30 Sep	LATAM Airlines Group
25 Sep - 14 Oct	LATAM Airlines Group
28 Sep - 20 Oct	LATAM Airlines Group
23 Sep - 04 Oct	SWISS
11 Sep - 21 Sep	ITA Airways
30 Sep - 07 Oct	LATAM Airlines Group
07 Sep - 22 Sep	easyJet
06 Sep - 22 Sep	ITA Airways
18 Sep - 27 Sep	Vueling Airlines
06 Sep - 16 Sep	Air Europa
12 Sep - 22 Sep	Air France
08 Sep - 15 Sep	Condor
07 Sep - 14 Sep	ITA Airways
26 Sep - 03 Oct	TAP
26 Sep - 09 Oct	SWISS

Also check the deals for one-way flights from Zurich 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 Zurich to Buenos Aires in September from $1065

Return flights