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

Return flights

10 Dec - 14 Dec	Avianca
10 Dec - 15 Dec	Avianca
03 Dec - 12 Dec	Avianca	direct
15 Dec - 15 Jan	jetBlue	direct
10 Dec - 14 Dec	Avianca	direct
03 Dec - 06 Dec	Avianca	direct
16 Dec - 22 Dec	Avianca	direct
21 Dec - 24 Dec	Avianca	direct
22 Dec - 30 Dec	Avianca	direct
02 Dec - 07 Dec	Avianca
16 Dec - 23 Dec	Avianca	direct
23 Dec - 02 Jan	Avianca	direct
26 Dec - 01 Jan	Avianca
20 Dec - 10 Jan	Avianca
30 Dec - 03 Jan	Arajet
25 Dec - 03 Jan	Avianca
20 Dec - 03 Jan	Avianca
29 Dec - 03 Jan	Arajet
27 Dec - 02 Jan	Arajet
27 Dec - 02 Jan	jetBlue	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 $240

Return flights