AirHint found the following cheapest return flights from Mexico City (MEX) to Las Vegas (LAS) in December 2025 (see full year).

Return flights

03 Dec - 09 Jan	Viva
03 Dec - 06 Dec	Viva
04 Dec - 06 Dec	Viva
01 Dec - 06 Dec	Viva
03 Dec - 05 Dec	Viva
01 Dec - 05 Dec	Viva
04 Dec - 05 Dec	Viva
10 Dec - 31 Dec	Viva
11 Dec - 31 Dec	Viva
01 Dec - 03 Dec	Viva
01 Dec - 04 Dec	Viva
31 Dec - 13 Jan	Viva
31 Dec - 14 Jan	Viva
31 Dec - 19 Jan	Viva
31 Dec - 20 Jan	Viva
31 Dec - 21 Jan	Viva
31 Dec - 17 Jan	Viva
31 Dec - 16 Jan	Viva
31 Dec - 18 Jan	Viva
31 Dec - 12 Jan	Viva

Also check the deals for one-way flights from Mexico City to Las Vegas 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 Mexico City to Las Vegas in December from $192

Return flights