MKE to PHX flight delays
Milwaukee, WI (MKE) Phoenix, AZ (PHX) · 1,460 miles
1,471 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
78.76%
Arrived on time
Within 15 minutes of schedule
0.88%
Cancelled
Share of scheduled flights
71 min
When late, late by
Average across delayed arrivals
16 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The shape of the lateness matters here. Flights on this route are not late often, but when they are late they are late by about 71 minutes — long enough to lose a connection or an evening. The on-time percentage looks reassuring and understates the consequence of being on the wrong flight.
The season swings this route hard. In October it ran 20.4 points more punctual than in December — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
The two directions do not behave alike. PHX to MKE arrives on time 5.5 points less often than the outbound. Delay accumulates through the flying day, so whichever direction is scheduled later tends to carry the worse record — which is an argument for booking the morning departure if the choice exists.
The 2 airlines here are separated by under 2 points — close enough to call a tie. Choose on price and departure time.
Which airline should you fly on this route?
Over January 2025 – August 2026, Southwest Airlines arrived on time most often on MKE to PHX. American Airlines was late most often. Flights ran closest to schedule in October and worst in December.
Every airline on MKE to PHX
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| Southwest Airlines | 981 | 79.28% | 0.41% | 54 min | C |
| American Airlines | 486 | 77.94% | 1.85% | 103 min | C |
| Frontier Airlines | 4 | 50% | 0% | 55 min | — |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
PHX to MKE Phoenix back to Milwaukee 73.26% on time DOther routes from Milwaukee
Common questions
Are flights from Milwaukee to Phoenix usually delayed?
78.76% of flights on the MKE to PHX route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is about the same as the average route in this record.
Which airline is most on time from Milwaukee to Phoenix?
Southwest Airlines, at 79.28% on time across 981 flights. The least punctual on the route was American Airlines at 77.94%.
How often are MKE to PHX flights cancelled?
0.88% of scheduled flights did not operate — about 9 in every thousand. That is in the normal range.
What is the best month to fly Milwaukee to Phoenix?
October, when 89.2% of flights arrived on time. The worst was December at 68.8%.
When MKE to PHX flights are late, how late are they?
About 71 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on MKE to PHX during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →