AirHint found the following cheapest return flights from San Juan (SJU) to Rio Negro (MDE) in December 2025 (see full year).

Return flights

06 Dec - 10 Dec	Copa
09 Dec - 12 Dec	Avianca	direct
02 Dec - 09 Dec	Avianca
03 Dec - 10 Dec	Avianca
16 Dec - 16 Jan	Avianca
03 Dec - 12 Dec	Copa
16 Dec - 17 Jan	Avianca	direct
05 Dec - 07 Dec	Copa
03 Dec - 17 Dec	Avianca
04 Dec - 07 Dec	Copa
15 Dec - 18 Dec	Copa
11 Dec - 18 Dec	Avianca
16 Dec - 18 Jan	Avianca	direct
23 Dec - 16 Jan	Avianca
21 Dec - 16 Jan	Avianca	direct
17 Dec - 16 Jan	Avianca	direct
15 Dec - 15 Jan	Copa
19 Dec - 31 Jan	Avianca	direct
18 Dec - 16 Jan	Avianca	direct
22 Dec - 16 Jan	Avianca	direct

Also check the deals for one-way flights from San Juan to Rio Negro 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 San Juan to Rio Negro in December from 146€

Return flights