Direct DEN to PHX Flights: From the Rockies to the Valley of the Sun
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Last updated Feb 16, 2026
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Tracking the May 7, 2026 departure — the cheapest date we found.
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Denver (DEN)
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Phoenix (PHX)
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Search FlightsTraveling from the Mile High City to the desert landscape of Phoenix is one of the most popular routes in the American West, connecting two major regional hubs with ease. Whether you are escaping the winter snow for some Arizona sunshine or heading south for a business meeting, the short flight time of roughly two hours makes this journey incredibly convenient for weekend warriors and corporate travelers alike. Numerous carriers operate this frequent corridor, ensuring that passengers have a wide variety of departure times to choose from throughout the day while enjoying the stunning transition from the rugged Rocky Mountains to the sprawling Sonoran Desert floor. This route is a staple for those looking to experience the best of the Southwest's urban centers.
Travel Tips
Since both Denver and Phoenix are major hubs for United and Southwest respectively, it is wise to compare prices across these specific carriers to find the most competitive rates. Denver International Airport is located approximately 25 miles from the city center, so consider taking the A-Line commuter rail from Union Station to save on expensive ride-share costs and avoid unpredictable highway traffic. Phoenix can reach extreme temperatures in the summer, so if you are flying in during July or August, try to book the earliest flight possible to arrive before the midday heat peak. Finally, drink plenty of water before and during your flight; transitioning between two high-altitude, arid climates like Denver and Phoenix can lead to quick dehydration and altitude-related fatigue if you are not careful with your hydration.
Airport Information
Denver (DEN)
Denver International Airport (DEN) is world-renowned for its iconic peaked roof architecture designed to mimic the snowy Rocky Mountains. As one of the largest airports in the world by land area, it serves as a primary hub for United and Frontier Airlines. The facility offers a vast array of amenities, including high-end dining, local Colorado craft breweries, and an extensive art collection. Passengers should allow extra time for security during peak hours, as the airport’s layout requires a train ride to reach the B and C gates.
Phoenix (PHX)
Phoenix Sky Harbor International Airport (PHX) is conveniently located just minutes from downtown Phoenix, serving as the primary gateway to the Valley of the Sun. As a major hub for American Airlines and a significant operation base for Southwest Airlines, it features modern terminals with excellent accessibility via the PHX Sky Train. The airport is consistently ranked highly for passenger convenience, offering travelers numerous local dining options that showcase authentic Southwestern flavors and providing quick access to the valley's comprehensive light rail system for an easy commute to Tempe or Mesa.
Seasonal Pricing Patterns
The Denver to Phoenix corridor is heavily influenced by seasonal tourism and major sporting events. Prices typically peak from January through April, as travelers from the Rockies head south for the warm Arizona winter and the popular MLB Spring Training season in March. Conversely, the summer months of June through August usually offer the lowest airfares because the extreme desert heat reduces leisure demand. Travelers can also find great deals during the autumn shoulder season in late September and October when the weather in both cities is quite pleasant and flight capacity remains high.
Frequently Asked Questions
What is the typical flight time between Denver and Phoenix?
Non-stop flights from Denver International Airport to Phoenix Sky Harbor typically take about 1 hour and 50 minutes, covering a distance of approximately 600 miles.
Which airlines offer the most frequent service on this route?
Southwest Airlines and United Airlines provide the highest frequency of daily non-stop flights, though Frontier and American also offer several daily options for travelers.
How early should I arrive at Denver International Airport?
Because DEN is one of the busiest airports in the country, it is recommended to arrive at least two hours before your scheduled departure to navigate security and the underground terminal train.
Does Phoenix have more than one commercial airport?
While Sky Harbor (PHX) is the primary hub, some regional or budget flights may utilize Phoenix-Mesa Gateway Airport (AZA), located about 30 miles southeast of the downtown area.
What is the cheapest month to fly from Denver to Phoenix?
August is generally the least expensive month to fly due to the intense summer heat in Arizona, whereas March often sees the highest fares due to Spring Training and spring break travel.