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

Return flights

05 Dec - 08 Dec	Avianca	direct
04 Dec - 08 Dec	Avianca	direct
12 Dec - 15 Dec	jetBlue	direct
04 Dec - 11 Dec	Avianca
03 Dec - 09 Dec	Avianca
05 Dec - 15 Dec	Avianca	direct
11 Dec - 15 Dec	Avianca	direct
06 Dec - 10 Dec	Spirit Airlines
03 Dec - 10 Dec	Avianca
25 Dec - 03 Jan	Avianca	direct
11 Dec - 13 Dec	Spirit Airlines
27 Dec - 04 Jan	Avianca	direct
26 Dec - 02 Jan	Avianca	direct
28 Dec - 02 Jan	Avianca
14 Dec - 01 Jan	Spirit Airlines
31 Dec - 14 Jan	Spirit Airlines
31 Dec - 20 Jan	Spirit Airlines
15 Dec - 01 Jan	Spirit Airlines
31 Dec - 17 Jan	Spirit Airlines
11 Dec - 01 Jan	Spirit Airlines

Also check the deals for one-way flights from Rio Negro to San Juan 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 Rio Negro to San Juan in December from $199

Return flights