Cheap Frontier Airlines flights Colorado Springs (COS) to Las Vegas (LAS)

Landing cheap one-way Frontier Airlines flights from COS to LAS on Expedia couldn’t be simpler — just filter by “Price (lowest to highest).” Or check out our budget-friendly return fares for your next exciting vacation.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines flights to Las Vegas are often more affordable in the quieter months of January and June. Whether you’re after a round-trip or one-way ticket, you could land a better deal then.

Search for cheap Frontier Airlines flights from Colorado Springs Airport (COS) to Harry Reid Intl. Airport (LAS) one to three months before your day of departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. Regardless of fare class and itinerary, the best day of the week to book a domestic flight is usually Sunday and the most expensive day is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Click on our “Nonstop” filter when browsing for direct Frontier Airlines flights from COS to LAS. You’ll also be able to compare other airlines servicing the same direct route.

Sort your results by “Early Morning” and “Morning” to see the earliest departures from COS to LAS. Jetting off early means you’re less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Harry Reid Intl. Airport (LAS) is the main Las Vegas hub for Frontier Airlines flights from Colorado Springs Airport (COS).

Depart from COS to LAS with Frontier Airlines and look forward to a range of perks starting with a rewarding loyalty program. When booking through Expedia as a Frontier Miles and One Key™ member, you can also earn OneKeyCash™* to use on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Changes are generally free within 24 hours of booking, but your airline may add a charge after that time. For further information about modifying your reservation, go to your “Trips,” select your flight and click on “Manage Booking.” If you want the flexibility to change your plans without additional costs, check the “Changes included” and “No cancel fee” filters when planning your next getaway.