$64 Cheap Frontier Airlines flights Knoxville (TYS) to Denver (DEN)

Scoring cheap one-way Frontier Airlines flights from TYS to DEN from $64 on Expedia is a cinch — just filter by “Price (lowest to highest).” Alternatively, check out our budget-friendly return fares from $148 for your next exciting adventure.**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 cheapest months to jet off to Denver with Frontier Airlines. You could also find excellent prices on one-way and round-trip fares in November.

To find cheap Frontier Airlines fares from McGhee Tyson Airport (TYS) to Denver Intl. Airport (DEN), start searching one to three months before your intended 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 affect the cost. Sunday is typically the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your trip 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.

Frontier Airlines operates direct flights from McGhee Tyson Airport (TYS) to Denver Intl. Airport (DEN), with 2 departures every week. Simply apply the “Nonstop” and “Airline” filters while searching on Expedia to show all direct Frontier Airlines flights to DEN.

Depart McGhee Tyson Airport (TYS) for Denver Intl. Airport (DEN) on a direct Frontier Airlines flight, and you’ll be in the air for around 3h 29m.

The first Frontier Airlines flight from TYS to DEN takes off at 4:19PM UTC-5, landing at 5:48PM UTC-7. If you want to set off later, the last Frontier Airlines flight leaves TYS at 4:19PM UTC-5 and lands at DEN at 5:48PM UTC-7. Flying earlier is generally a smart choice as morning and mid-morning flights are least likely to face 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.

Denver Intl. Airport (DEN) is the primary Denver hub for Frontier Airlines flights from McGhee Tyson Airport (TYS).

Fly from TYS to DEN with Frontier Airlines and you’ll enjoy a range of perks including a rewarding loyalty program. When you book through Expedia as a Frontier Miles and One Key™ member, you could 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.

Book a Frontier Airlines flight from McGhee Tyson Airport (TYS) to Denver Intl. Airport (DEN), and you’ll probably board an Airbus A320neo. Keep in mind though, that the aircraft type can change depending on operational requirements.

Changes are typically free within 24 hours of making your booking, but your airline may charge a fee after that. For further information about altering your reservation, check out your “Trips,” select your flight and click on “Manage Booking.” If you want the flexibility to change your plans without additional charges, apply the “No cancel fee” or “Changes included” filter when planning your next trip.