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

Return flights

06 Dec - 09 Dec	Spirit Airlines
08 Dec - 09 Dec	Spirit Airlines
05 Dec - 09 Dec	Spirit Airlines
06 Dec - 08 Dec	Spirit Airlines
10 Dec - 11 Dec	Spirit Airlines
06 Dec - 11 Dec	Spirit Airlines
05 Dec - 06 Dec	Spirit Airlines
06 Dec - 06 Dec	Spirit Airlines
08 Dec - 11 Dec	Spirit Airlines
06 Dec - 07 Dec	Spirit Airlines
01 Dec - 05 Jan	Arajet
22 Dec - 12 Jan	Arajet
19 Dec - 05 Jan	Arajet
29 Dec - 03 Jan	Arajet
24 Dec - 11 Jan	Spirit Airlines
22 Dec - 08 Jan	Spirit Airlines
16 Dec - 05 Jan	Spirit Airlines
19 Dec - 02 Jan	Arajet
17 Dec - 05 Jan	Spirit Airlines
12 Dec - 02 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 245€

Return flights