AirHint found the following cheapest return flights from Boise (BOI) to Mesa (AZA) in December 2025 (see full year).

Return flights

07 Dec - 11 Dec	Allegiant Air	direct
07 Dec - 14 Dec	Allegiant Air	direct
11 Dec - 14 Dec	Allegiant Air	direct
04 Dec - 11 Dec	Allegiant Air	direct
04 Dec - 14 Dec	Allegiant Air	direct
04 Dec - 07 Dec	Allegiant Air	direct
27 Dec - 16 Jan	Allegiant Air	direct
29 Dec - 01 Jan	Allegiant Air
28 Dec - 02 Jan	Alaska Airlines

Also check the deals for one-way flights from Boise to Mesa 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 Boise to Mesa in December from $101

Return flights