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Route Reliability

Denver → Phoenix

DEN–PHX · 602 miles · Denver International Airport to Phoenix Sky Harbor International Airport

80
Pretty Reliable
WanderNerd Reliability Score
76%
Arrive within 15 minutes
10 min
Average arrival delay
0.9%
Cancelled
8,894
Flights in the data

Data through May 2026.

Who flies it best

Ranked by on-time arrivals. Historical results, not predictions.

  1. 1.United Airlines80%2,379 flights
  2. 2.Frontier Airlines77%1,401 flights
  3. 3.American Airlines76%1,179 flights
  4. 4.Southwest Airlines73%3,935 flights

What the data says

Morning flights do better here.

DEN–PHX flights departing between 3–6 AM arrived on time 93% of the time, versus 62% between 9 PM–12 AM.

Sunday scaries are real for this one.

DEN–PHX flights arrived on time 81% of the time on Saturdays. On Sundays: 73%.

United Airlines runs this route best.

United Airlines arrived on time 80% of the time on this route; Southwest Airlines managed 73%.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon76%(1331 flights)
  • Tue79%(1159 flights)
  • Wed77%(1200 flights)
  • Thu74%(1337 flights)
  • Fri73%(1319 flights)
  • Sat81%(1093 flights)
  • Sun73%(1365 flights)
On-time by departure window
  • 12–3 AM—(2 flights)
  • 3–6 AM93%(213 flights)
  • 6–9 AM87%(1719 flights)
  • 9 AM–12 PM83%(1517 flights)
  • 12–3 PM79%(1524 flights)
  • 3–6 PM71%(1473 flights)
  • 6–9 PM64%(1653 flights)
  • 9 PM–12 AM62%(703 flights)
On-time trend by month
77%
May

Jun 62% → May 77% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202562%634
July 202562%647
August 202575%603
September 202578%653
October 202576%800
November 202575%751
December 202576%771
January 202681%729
February 202684%719
March 202678%912
April 202686%821
May 202677%764

Keep nerding

Based on 8,894 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.