$89 Cheap United flights Phoenix (PHX) to Denver (DEN)

Make use of the “Price (lowest to highest)” filter on Expedia to search for cheap United Airlines round-trip flights from $177 from PHX to DEN. Affordable one-way options from $89 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.

United Airlines flights to Denver are often cheaper in the off-peak months of January and November. Whether you’re after a one-way or a return ticket, you could find a better deal then.

Look for affordable United Airlines flights from Sky Harbor Intl. Airport (PHX) to Denver Intl. Airport (DEN) one to three months ahead of your 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. No matter the fare type and itinerary, the ideal day to book a domestic flight is generally Sunday and the most expensive day tends to be 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.

You can easily fly from Sky Harbor Intl. Airport (PHX) to Denver Intl. Airport (DEN) on one of United Airlines’s 57 direct weekly flights. Use our “Nonstop” and “Airline” filters to find the United Airlines flight that’ll get you to DEN at your preferred time.

It takes around 1h 54m to travel nonstop from Sky Harbor Intl. Airport (PHX) to Denver Intl. Airport (DEN) with United Airlines.

United Airlines operates the most flights from Sky Harbor Intl. Airport (PHX) to Denver Intl. Airport (DEN) on Saturday. With up to 10 daily departures, you’ll get the most options and flexibility on this day.

Setting off from PHX at 5:00AM UTC-7, the earliest United Airlines flight to DEN lands at 6:53AM UTC-7. Traveling earlier in the day means you’re less likely to encounter cancellations or delays.* After something later? The last United Airlines flight from PHX to DEN departs at 7:19PM UTC-7 and touches down at 9:14PM UTC-7.*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.

Take a United Airlines flight from Sky Harbor Intl. Airport (PHX) to Denver, and you’ll likely come in to Denver Intl. Airport (DEN). This is the airline’s main hub in this destination.

Journey from PHX to DEN with United Airlines and you can look forward to a range of benefits starting with a rewarding loyalty program. When you book through Expedia as a United Mileage Plus and One Key™ member, you may also earn OneKeyCash™* to spend on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

You’ll likely be onboard a Boeing 737 MAX 8 or a Boeing 737-900 when flying United Airlines from Sky Harbor Intl. Airport (PHX) to Denver Intl. Airport (DEN). However, keep in mind that a different aircraft may be assigned depending on operational demands.

Depending on the ticket type you purchased, a fee may apply if you cancel or change your booking more than 24 hours after confirmation. To find plane tickets with more flexibility, select our “Changes included” and “No cancel fee” boxes while searching for flights. To learn more about canceling or changing your reservation, go to “Trips,” select your flight and tick “Manage Booking.”