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Route Reliability

Milwaukee → Phoenix

MKE–PHX · 1,460 miles · Milwaukee Mitchell International Airport to Phoenix Sky Harbor International Airport

84
Pretty Reliable
WanderNerd Reliability Score
80%
Arrive within 15 minutes
10 min
Average arrival delay
0.9%
Cancelled
1,489
Flights in the data

Data through May 2026.

Who flies it best

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

  1. 1.Southwest Airlines81%996 flights
  2. 2.American Airlines78%489 flights

Not enough history to rank: Frontier Airlines (4 flights). We rank airlines only after 100 flights on the route.

What the data says

Morning flights do better here.

MKE–PHX flights departing between 3–6 AM arrived on time 93% of the time, versus 67% between 6–9 PM.

Thursday is the weak spot.

MKE–PHX flights arrived on time 84% of the time on Fridays. On Thursdays: 76%.

Southwest Airlines has a slight edge here.

Southwest Airlines arrived on time 81% of the time on this route; American Airlines managed 78%.

Flights on this route

The breakdown

On-time by weekday
  • Mon80%(223 flights)
  • Tue84%(195 flights)
  • Wed83%(198 flights)
  • Thu76%(226 flights)
  • Fri84%(221 flights)
  • Sat78%(212 flights)
  • Sun76%(198 flights)
On-time by departure window
  • 3–6 AM93%(186 flights)
  • 6–9 AM86%(395 flights)
  • 9 AM–12 PM86%(55 flights)
  • 12–3 PM81%(346 flights)
  • 3–6 PM73%(260 flights)
  • 6–9 PM67%(231 flights)
On-time trend by month
72%
May

Jun 85% → May 72% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202585%114
July 202582%113
August 202586%101
September 202587%96
October 202591%120
November 202581%128
December 202570%141
January 202672%111
February 202681%112
March 202679%159
April 202681%144
May 202672%134

Keep nerding

Based on 1,489 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.