Allegiant flights — Fort Collins, CO

Last updated: September 24, 2026

What affects the price

Flight prices shift based on a few key factors. How far ahead you book is usually the biggest one, as seats tend to fill up and get more expensive as the departure date nears. Choosing mid-week travel instead of weekends can often save you money, and flying during off-peak hours helps too. Demand is a major driver, so big holidays or local events can push costs higher. We look at all the available options to find a deal that fits your needs. Exact pricing confirmed free on the call.

About this service

Allegiant focuses on connecting smaller cities to popular vacation destinations, often using a low-cost model. The base fare is usually lower, but extras like seat selection, carry-on bags, and checked luggage typically cost more. Because they often fly specific routes on limited days, flexibility with your travel dates can help you find a better value. We can help you weigh these extras against your total budget. Exact pricing confirmed free on the call.

Frequently asked in Fort Collins

Also serving nearby: Greeley · Longmont · Boulder · Thornton · Westminster

All cities in Colorado →

More on this: DOT Aviation Consumer Protection — refund rights and the 24-hour rule.

Service area details

Serving all of Fort Collins — population 170,376; about 2,976 residents per square mile across 57.2 sq mi. ZIP codes covered include 80521, 80522, 80523, 80524, 80525, 80526, 80527, 80528.

Neighborhoods served in Fort Collins: Old Town, Downtown, University District, Horsetooth Heights, Drake Neighborhood — and every surrounding area.