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

Return flights

30 Dec - 08 Jan	Allegiant Air	direct
30 Dec - 11 Jan	Allegiant Air	direct
30 Dec - 18 Jan	Allegiant Air	direct
28 Dec - 31 Dec	United
30 Dec - 03 Jan	Allegiant Air	direct
30 Dec - 04 Jan	Frontier Airlines
30 Dec - 01 Jan	Allegiant Air
27 Dec - 03 Jan	Alaska Airlines
30 Dec - 06 Jan	Allegiant Air
27 Dec - 28 Dec	Frontier Airlines
31 Dec - 04 Jan	Delta
28 Dec - 31 Dec	Southwest Airlines	direct
27 Dec - 03 Jan	Southwest Airlines	direct
27 Dec - 28 Dec	Southwest Airlines	direct

Also check the deals for one-way flights from Spokane 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 Spokane to Las Vegas in December from 246€

Return flights