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

Return flights

03 Dec - 06 Dec	Spirit Airlines
03 Dec - 09 Dec	Spirit Airlines
05 Dec - 09 Dec	Spirit Airlines
05 Dec - 06 Dec	Spirit Airlines
08 Dec - 09 Dec	Spirit Airlines
03 Dec - 05 Dec	Spirit Airlines
09 Dec - 09 Dec	Spirit Airlines
03 Dec - 03 Dec	Spirit Airlines
08 Dec - 29 Dec	Arajet
05 Dec - 05 Dec	Spirit Airlines
31 Dec - 17 Jan	Arajet
06 Dec - 17 Jan	Spirit Airlines
15 Dec - 07 Jan	Arajet
30 Dec - 20 Jan	Spirit Airlines
28 Dec - 10 Jan	Arajet
30 Dec - 14 Jan	Spirit Airlines
17 Dec - 09 Jan	Arajet
30 Dec - 13 Jan	Spirit Airlines
30 Dec - 15 Jan	Spirit Airlines
30 Dec - 19 Jan	Spirit Airlines

Also check the deals for one-way flights from Newark 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 Newark to Rio Negro in December from $295

Return flights