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

Return flights

24 Sep - 28 Sep	JetSmart	direct
26 Sep - 28 Sep	JetSmart	direct
24 Sep - 05 Oct	JetSmart	direct
24 Sep - 10 Oct	JetSmart	direct
24 Sep - 12 Oct	JetSmart	direct
24 Sep - 08 Oct	JetSmart	direct
26 Sep - 05 Oct	JetSmart	direct
26 Sep - 08 Oct	JetSmart	direct
26 Sep - 10 Oct	JetSmart	direct
26 Sep - 12 Oct	JetSmart	direct
26 Sep - 17 Oct	JetSmart	direct
24 Sep - 15 Oct	JetSmart	direct
24 Sep - 27 Sep	JetSmart
17 Sep - 28 Sep	JetSmart	direct
19 Sep - 28 Sep	JetSmart	direct
23 Sep - 24 Sep	LATAM Airlines Group
27 Sep - 28 Sep	JetSmart
23 Sep - 24 Sep	GOL Linhas Aéreas	direct
24 Sep - 25 Sep	JetSmart
17 Sep - 24 Sep	JetSmart	direct

Also check the deals for one-way flights from Florianopolis 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 Florianopolis to Buenos Aires in September from 173€

Return flights