Spirit airlines flights — Boulder, CO
Last updated: September 24, 2026
What affects the price
Flight pricing shifts constantly based on a few key factors. When you book your seat matters most, as last-minute tickets often come at a premium compared to planning ahead. The day of the week you choose and the specific time of your departure can also swing the total, as weekend flights are generally pricier than those mid-week. Demand during peak travel periods inevitably pushes costs higher, while flexible itineraries often reveal better deals. Get exact pricing confirmed free on the call.
About this service
Spirit Airlines is a carrier known for a no-frills approach, which can be an efficient way to travel if you are looking to keep costs down. These flights often come with lower base fares, but you will want to account for potential add-on fees for bags or seat selection. Rates fluctuate based on demand and travel dates.
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Also serving nearby: Longmont · Westminster · Arvada · Thornton · Lakewood
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Service area details
Serving all of Boulder — population 105,898; about 3,937 residents per square mile across 26.9 sq mi. ZIP codes covered include 80301, 80302, 80303, 80304, 80305, 80306, 80307, 80308.
Neighborhoods served in Boulder: Chautauqua, Newlands, Whittier, Mapleton Hill, Downtown Boulder — and every surrounding area.
Areas we serve
Browse by state, then city.