Phoenix to Denver Flights: PHX to DEN Route Guide, Fares & Tips

Route Overview: Phoenix to Denver

The journey from the Sonoran Desert to the Rocky Mountains is one of the busiest corridors in the Western United States. Travelers looking for cheap flights from Phoenix to Denver will find a robust schedule of daily departures connecting Phoenix Sky Harbor International Airport (PHX) to Denver International Airport (DEN). This route serves business professionals, outdoor enthusiasts, and families alike, bridging two major Western hubs. For the latest availability and personalized booking assistance, you can always call 1-800-518-9067 to speak with our travel experts.

Flight duration and schedule

A typical PHX to DEN nonstop flight covers the distance in approximately 1 hour and 45 minutes to 2 hours and 10 minutes of actual air time. However, gate-to-gate schedules usually account for about 2 hours and 50 minutes to allow for taxiing at both busy airports. Flights depart as early as 5:00 AM and continue until late evening, often with departures nearly every hour during peak business days. When searching all Faresterminal route guides, you will notice that this short-haul hop is significantly faster than the 12-hour drive through the mountains.

Nonstop vs one-stop options

Given the high demand, most travelers prefer nonstop service. However, connecting flights are sometimes available through hubs like Salt Lake City (SLC) or Las Vegas (LAS). While a connection can occasionally lower the price during peak holidays, the direct flight is almost always more convenient. A live one-way Economy fare found today for 2026-10-24 was $148 on WN (Southwest Airlines), proving that even advanced bookings offer great value. Remember that prices change daily based on demand and fuel costs.

Distance and typical aircraft

The great circle distance between PHX and DEN is approximately 589 miles. This route is primarily served by narrow-body aircraft. You will frequently fly on the Boeing 737 family (standard for Southwest and United) or the Airbus A320 family (common for American and Frontier). These aircraft are well-suited for the climb over the high terrain of the Southern Rockies.

Airlines, Alliances and Aircraft on the PHX-DEN Route

Several major carriers dominate this route, ensuring competitive pricing and frequent service.

Southwest Airlines (WN)

Southwest is a major player at both PHX and DEN. They offer the most frequency and include two free checked bags, which is a significant saving for travelers heading to Colorado for skiing or hiking. They operate out of Terminal 3 in Phoenix.

United Airlines (UA)

As Denver is a massive hub for United, they offer numerous daily flights. United is part of the Star Alliance, making this a great route for earning or redeeming MileagePlus miles. They typically use Terminal 3 in Phoenix and Concourse B in Denver.

Frontier Airlines (F3)

For those seeking the absolute lowest base fare, Frontier often provides ultra-low-cost options. Keep in mind that Frontier unbundles its services, so you will pay extra for bags and seat assignments. They are a popular choice for budget-conscious flyers on the PHX to DEN route.

American Airlines (AA)

American Airlines maintains a strong presence in Phoenix (a former US Airways hub). They offer several daily nonstops to Denver, primarily using Terminal 4. They are part of the oneworld alliance.

Cabin classes and seat tips

Most aircraft on this route offer a two-class configuration: First Class and Economy. On United Airlines and American, you can also opt for 'Economy Plus' or 'Main Cabin Extra' for additional legroom. On Southwest, the open-seating policy applies, so checking in exactly 24 hours early is vital for a good seat. For the best views of the Grand Canyon and the Rockies, try to snag a window seat on the left side of the plane when flying North from Phoenix.

Departure Airport Guide: PHX

Phoenix Sky Harbor (PHX) is known as America's Friendliest Airport and is located just a few miles from downtown Phoenix.

Terminals and check-in

PHX currently operates two main terminals: Terminal 3 and Terminal 4. Terminal 3 (John S. McCain III Terminal) hosts Delta, United, JetBlue, and Southwest. Terminal 4 (Barry M. Goldwater Terminal) is the largest and hosts American Airlines and Southwest (international). Always check your ticket, as Southwest operates out of both terminals depending on the gate. Check-in kiosks are plentiful, but give yourself at least 90 minutes before departure.

Getting to the airport

The PHX Sky Train is a free automated people mover that connects the airport to the Valley Metro Rail at 44th Street and Washington. This is the most cost-effective way to reach the airport from Tempe or Downtown Phoenix.

Parking and rideshare pickup

Rideshare services like Uber and Lyft pick up on Level 1 of the parking garages at Terminal 3 and Terminal 4. For those driving, the East Economy lot offers the best balance of price and proximity, connected to the terminals via the Sky Train.

Arrival Airport Guide: DEN

Denver International Airport (DEN) is famous for its peaked roof mimicking the snow-capped mountains.

Terminals and baggage claim

DEN consists of the Jeppesen Terminal and three airside concourses (A, B, and C). All passengers arrive at the concourses and must take the underground train to the Jeppesen Terminal for baggage claim and ground transport. Southwest Airlines typically uses Concourse C, while United uses Concourse B.

Ground transportation into the city

The most efficient way to reach downtown is the A Line commuter rail, which runs from the airport to Denver Union Station. The trip takes about 37 minutes and costs approximately $10.50. Taxis and rideshares are available at Island 5 of the Level 5 transportation center.

Cheapest Time to Fly and Fare Trends

Fares for Phoenix to Denver flights fluctuate based on the season and local events.

Best days and months to book

Mid-week travel (Tuesdays and Wednesdays) is consistently cheaper than Sunday or Friday flights. Booking 21 to 30 days in advance usually yields the best rates for this route.

Typical fare ranges by season

How to lock in the lowest fare on Faresterminal

To secure the best PHX to DEN airfare, use our comparison tool to view multiple airlines at once. If you find a complex itinerary or need to book for a large group, call 1-800-518-9067 for expert help. Travelers often compare this route to others like Phoenix to Atlanta or Las Vegas to Denver to find the best regional deals.

Baggage Information and Fees

Baggage policies vary significantly between carriers on the PHX-DEN route.

*United Basic Economy does not allow a full-sized carry-on bag.

How to avoid baggage fees

Flying Southwest is the easiest way to avoid fees. Alternatively, using an airline-branded credit card or attaining elite status can waive fees on United and American. Always pre-pay for bags online to save $5-$10 compared to airport counter prices.

Weather in Denver Through the Seasons

Denver's weather is famously unpredictable due to its 5,280-foot elevation.

Best months to visit

September and October are arguably the best months to visit Denver, offering clear blue skies, comfortable temperatures, and lower flight prices after the summer rush. For skiers, February and March offer the most reliable snowpack in the nearby mountains.

Where to Stay in Denver

LoDo (Lower Downtown)

LoDo is the historic heart of the city, home to Union Station and Coors Field. It is perfect for those who want to be steps away from the best bars, restaurants, and the commuter rail to the airport.

Cherry Creek

For a more upscale experience, Cherry Creek offers high-end shopping, boutique hotels, and excellent dining. It is quieter than downtown but very walkable.

Capitol Hill

A vibrant, bohemian neighborhood with historic mansions and the Colorado State Capitol. It is a great choice for those interested in museums and local culture.

Events and Reasons to Visit Denver

Denver is a cultural and athletic hub. The Great American Beer Festival in the fall is a massive draw. Sports fans flock to see the Broncos (NFL), Nuggets (NBA), or Rockies (MLB). Red Rocks Amphitheatre, located just west of the city, is considered one of the world's best concert venues. Many travelers also use Denver as a gateway to Rocky Mountain National Park.

Travel Tips for Phoenix to Denver Flyers

• Drink plenty of water; the transition from Phoenix's dry heat to Denver's high altitude can cause dehydration.
• The A Line train is much cheaper than a $60 Uber from DEN to downtown.
• If flying Southwest, check in exactly 24 hours prior to your PHX to DEN departure.
• Pack a jacket even in summer; evenings in Denver can be cool.
• Use the North Security Checkpoint at DEN; it often has shorter lines than the South.
• Check the 'T-S-A' wait times on the PHX airport website before leaving home.
• Denver is very walkable, but you will need a car to visit the mountains.
• Book your cheap flights from Phoenix to Denver at least three weeks out for the best savings.

Nearby and Related Routes

If you are looking for other travel inspiration, Faresterminal offers extensive guides for routes across the country. Many travelers who visit Denver also look for flights like Atlanta to Denver or Miami to Denver. If you are starting in Phoenix, you might also consider Houston to Phoenix or Boston to Phoenix for your next trip. Other popular searches include New York to Los Angeles (JFK-LAX), Los Angeles to New York (LAX-JFK), and Chicago to Miami (ORD-MIA). For any assistance with these or other routes, our team is available at 1-800-518-9067.