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

Return flights

21 Dec - 28 Dec	Frontier Airlines	direct
30 Dec - 03 Jan	Frontier Airlines
12 Dec - 14 Dec	Frontier Airlines
04 Dec - 07 Dec	Frontier Airlines
12 Dec - 14 Dec	Southwest Airlines	direct
13 Dec - 20 Dec	Alaska Airlines
19 Dec - 26 Dec	Delta
26 Dec - 29 Dec	Southwest Airlines	direct
01 Dec - 07 Dec	Delta
04 Dec - 07 Dec	Southwest Airlines	direct

Also check the deals for one-way flights from Tucson 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 Tucson to Las Vegas in December from 119€

Return flights