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

Return flights

28 Dec - 30 Dec	Frontier Airlines	direct
21 Dec - 30 Dec	Frontier Airlines	direct
14 Dec - 15 Dec	Frontier Airlines
30 Dec - 01 Jan	Frontier Airlines
18 Dec - 21 Dec	Frontier Airlines
21 Dec - 24 Dec	Frontier Airlines
21 Dec - 25 Dec	Frontier Airlines
19 Dec - 23 Dec	Sun Country Airlines
14 Dec - 17 Dec	Frontier Airlines
31 Dec - 01 Jan	Southwest Airlines
20 Dec - 27 Dec	Southwest Airlines
20 Dec - 23 Dec	Delta

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 111€

Return flights