Cheap Frontier Airlines flights Phoenix (PHX) to Colorado Springs (COS)

Use the “Price (lowest to highest)” filter on Expedia to search for cheap Frontier Airlines round-trip flights from PHX to COS. Affordable one-way tickets are available as well.**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 Colorado Springs are often cheaper in the low-season months of January and February. Whether you’re searching for a one-way or a return ticket, you could find a better deal then.

To find cheap Frontier Airlines fares from Sky Harbor Intl. Airport (PHX) to Colorado Springs Airport (COS), start searching one to three months before your planned departure. Reserving domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also influence how much you pay. Sunday is usually the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking on a Sunday.**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.

Use our “Nonstop” filter when looking for direct Frontier Airlines flights from PHX to COS. It’s also a good way to compare other airlines offering the same direct route.

To find the earliest departures from PHX to COS with Frontier Airlines, sort your results by “Early Morning” and “Morning.” Choosing an early flight generally means cancellations are less likely.**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.

Board a Frontier Airlines flight from Sky Harbor Intl. Airport (PHX) to Colorado Springs, and you’re most likely to arrive at Colorado Springs Airport (COS). This is the airline’s primary hub in this city.

With a rewarding loyalty program, Frontier Airlines is a top choice for many travelers journeying from PHX to COS. Plus, as a Frontier Miles and One Key™ member booking through Expedia, you can earn OneKeyCash™* on eligible flights along with your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on your fare type, a fee will generally apply if you modify or cancel your flight more than 24 hours after it’s confirmed. To secure flexible fares, select our “Changes included” and “No cancel fee” boxes when you search for flights. For additional information on canceling or modifying your reservation, visit “Trips,” select your flight and tick “Manage Booking.”