Cheapest return flights from Boise to Denver in April from $118

AirHint found the following cheapest return flights from Boise (BOI) to Denver (DEN) in April 2026 (see full year).

Return flights

09 Apr - 12 Apr Frontier Airlines direct
02 Apr - 04 Apr Frontier Airlines
03 Apr - 05 Apr Alaska Airlines
02 Apr - 04 Apr United direct
29 Apr - 08 May United direct
16 Apr - 19 Apr Southwest Airlines direct
03 Apr - 05 Apr Southwest Airlines direct

Also check the deals for one-way flights from Boise to Denver in April.

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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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