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

Return flights

28 Dec - 20 Jan	TAP
26 Dec - 13 Jan	Aeromexico
30 Dec - 29 Jan	Aeromexico
27 Dec - 14 Jan	TAP
28 Dec - 18 Jan	TAP
28 Dec - 28 Jan	TAP
30 Dec - 10 Jan	Aeromexico
31 Dec - 23 Jan	SWISS
26 Dec - 30 Dec	Aeromexico
26 Dec - 12 Jan	TAP
26 Dec - 28 Dec	Aeromexico
29 Dec - 28 Jan	Aeromexico
25 Dec - 31 Dec	Aeromexico
25 Dec - 28 Dec	Aeromexico
24 Dec - 30 Dec	TAP

Also check the deals for one-way flights from London 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 London to Rio Negro in December from $1110

Return flights