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Route Reliability

Chicago → Phoenix

ORD–PHX · 1,440 miles · Chicago O'Hare International Airport to Phoenix Sky Harbor International Airport

74
Usually Fine
WanderNerd Reliability Score
75%
Arrive within 15 minutes
11 min
Average arrival delay
1.6%
Cancelled
5,632
Flights in the data

Data through May 2026.

Who flies it best

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

  1. 1.United Airlines81%1,944 flights
  2. 2.American Airlines74%2,992 flights
  3. 3.Frontier Airlines67%212 flights
  4. 4.Southwest Airlines58%484 flights

What the data says

Morning flights do better here.

ORD–PHX flights departing between 3–6 AM arrived on time 88% of the time, versus 59% between 9 PM–12 AM.

Monday is the weak spot.

ORD–PHX flights arrived on time 79% of the time on Saturdays. On Mondays: 70%.

United Airlines has a clear lead on this route.

United Airlines arrived on time 81% of the time on this route; Southwest Airlines managed 58%.

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
  • Mon70%(809 flights)
  • Tue79%(768 flights)
  • Wed76%(743 flights)
  • Thu77%(804 flights)
  • Fri71%(809 flights)
  • Sat79%(765 flights)
  • Sun71%(823 flights)
On-time by departure window
  • 12–3 AM—(2 flights)
  • 3–6 AM88%(276 flights)
  • 6–9 AM85%(816 flights)
  • 9 AM–12 PM80%(1036 flights)
  • 12–3 PM75%(1099 flights)
  • 3–6 PM69%(1078 flights)
  • 6–9 PM66%(950 flights)
  • 9 PM–12 AM59%(264 flights)
On-time trend by month
76%
May

Jun 72% → May 76% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202572%450
July 202564%431
August 202575%399
September 202577%424
October 202577%436
November 202576%426
December 202573%487
January 202676%437
February 202682%446
March 202679%565
April 202668%523
May 202676%497

Same trip, other airports

Keep nerding

Based on 5,632 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.