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

Return flights

12 Dec - 17 Dec	JetSmart	direct
01 Dec - 11 Dec	Flybondi	direct
01 Dec - 01 Dec	Flybondi	direct
03 Dec - 10 Dec	JetSmart	direct
03 Dec - 17 Dec	JetSmart	direct
07 Dec - 17 Dec	JetSmart	direct
07 Dec - 10 Dec	JetSmart	direct
01 Dec - 17 Dec	JetSmart	direct
01 Dec - 10 Dec	JetSmart	direct
11 Dec - 17 Dec	JetSmart	direct
31 Dec - 21 Jan	JetSmart	direct
31 Dec - 20 Jan	JetSmart	direct
31 Dec - 19 Jan	JetSmart	direct
21 Dec - 07 Jan	JetSmart
31 Dec - 07 Jan	JetSmart
21 Dec - 07 Jan	JetSmart	direct
31 Dec - 07 Jan	JetSmart	direct
21 Dec - 08 Jan	JetSmart	direct
31 Dec - 08 Jan	JetSmart	direct
31 Dec - 17 Jan	JetSmart

Also check the deals for one-way flights from Florianopolis to Buenos Aires in December.

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 December from $239

Return flights