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

Return flights

09 Dec - 16 Dec	Spirit Airlines
10 Dec - 17 Dec	Spirit Airlines
01 Dec - 07 Dec	Avianca
16 Dec - 21 Dec	United
07 Dec - 14 Jan	Copa
01 Dec - 04 Dec	Spirit Airlines
30 Dec - 04 Jan	American Airlines
29 Dec - 05 Jan	Alaska Airlines
16 Dec - 14 Jan	United
22 Dec - 09 Jan	Sun Country Airlines
15 Dec - 28 Dec	Spirit Airlines
18 Dec - 07 Jan	Spirit Airlines
17 Dec - 05 Jan	Spirit Airlines
15 Dec - 05 Jan	Spirit Airlines
29 Dec - 09 Jan	Spirit Airlines
15 Dec - 21 Dec	Spirit Airlines
20 Dec - 11 Jan	Sun Country Airlines
01 Dec - 21 Dec	Spirit Airlines
19 Dec - 28 Dec	Spirit Airlines
22 Dec - 28 Dec	Spirit Airlines

Also check the deals for one-way flights from Los Angeles 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 Los Angeles to Rio Negro in December from $443

Return flights