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

Return flights

03 Dec - 10 Dec	Copa
03 Dec - 06 Dec	Copa
09 Dec - 15 Dec	Avianca	direct
10 Dec - 15 Dec	Avianca	direct
10 Dec - 14 Dec	Avianca
03 Dec - 12 Dec	Avianca
11 Dec - 14 Dec	Avianca
23 Dec - 28 Dec	Avianca	direct
21 Dec - 27 Dec	Avianca	direct
16 Dec - 23 Dec	Avianca	direct
17 Dec - 01 Jan	Avianca
20 Dec - 10 Jan	Avianca
30 Dec - 06 Jan	Copa
30 Dec - 06 Jan	jetBlue	direct
23 Dec - 09 Jan	Avianca
26 Dec - 03 Jan	Arajet
30 Dec - 03 Jan	Arajet
25 Dec - 03 Jan	Avianca
31 Dec - 05 Jan	Copa
20 Dec - 03 Jan	Avianca

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 $223

Return flights