$125 Cheap Frontier Airlines flights Burlington (BTV) to Denver (DEN)

Scoring cheap one-way Frontier Airlines flights from BTV to DEN from $125 on Expedia is a cinch — just filter by “Price (lowest to highest).” Alternatively, check out our affordable round-trip fares from $260 for your next getaway.**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.

January is one of the most affordable months to fly to Denver with Frontier Airlines. You could also find great prices on one-way and return tickets in November.

Begin your search one to three months before your departure to find cheaper fares on Frontier Airlines flights from Burlington Intl. Airport (BTV) to Denver Intl. Airport (DEN). You can save 25% by booking your domestic flight 34 to 86 days in advance versus last-minute reservations made 6 to 12 days out. You could also reduce costs by buying your fare on a Sunday, as it’s 6% cheaper on average than a Monday, the most expensive day to book.* Get your timing right, and you can enjoy significant savings on domestic flights.*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.

To see if there’s a direct route from BTV to DEN with Frontier Airlines or any other airlines, select the “Nonstop” filter when looking for flights.

Browse Frontier Airlines’s earliest flights from BTV to DEN by using the “Early Morning” and “Morning” filters. Not only will you arrive at your destination sooner, early departures are also 20% less likely to be canceled.**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.

Denver Intl. Airport (DEN) is the primary Denver hub for Frontier Airlines flights from Burlington Intl. Airport (BTV).

With a rewarding loyalty program, Frontier Airlines is a top pick for many passengers departing from BTV to DEN. Plus, as a Frontier Miles and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Typically, you can cancel or modify your flight, although additional fees may apply if you made your booking over 24 hours ago. Want to keep your options open? Make use of our “Changes included” or “No cancel fee” filter to find flights that won’t charge you extra if you need to revise your plans. To modify your booking, head to “Trips,” select your flight and click on “Manage Booking” for more details.