$99 Cheap Delta flights Phoenix (PHX) to Denver (DEN)

You’ll find affordable round-trip Delta Air Lines flights from $191 from PHX to DEN by filtering your results from “Price (lowest to highest)” on Expedia. Or search for bargains from $99 for a one-way trip.**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.

Delta Air Lines flights to Denver are usually cheaper in the quieter months of January and November. Whether you’re in search of a one-way or round-trip ticket, you could score a better deal then.

Start searching one to three months ahead of your travel date to score cheaper fares on Delta Air Lines flights from Sky Harbor Intl. Airport (PHX) 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 spot on, and you can enjoy significant savings on domestic trips.*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 Delta Air Lines flights from PHX to DEN. It’s also a great way to compare other carriers servicing the same direct trip.

Find Delta Air Lines’s earliest flights from PHX to DEN by selecting our “Morning” and “Early Morning” filters. Not only will you arrive 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.

Delta Air Lines flights from Sky Harbor Intl. Airport (PHX) to Denver arrive at Denver Intl. Airport (DEN). This is the main gateway here.

Traveling from PHX to DEN with Delta Air Lines means enjoying a variety of perks, including an excellent in-flight experience and a rewarding loyalty program. Plus, when you book through Expedia, One Key™ members can earn OneKeyCash™* to redeem on select future travel purchases. That’s in addition to the Delta SkyMiles points you can earn with Delta Air Lines.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on the type of fare you purchased, a fee is typically charged if you cancel or reschedule your flight more than 24 hours after it’s been confirmed. To secure flexible fares, select our “Changes included” or “No cancel fee” filter when you search for flights. For more details on changing or canceling your reservation, head to “Trips,” select your flight and click on “Manage Booking.”