Milwaukee (MKE) to Phoenix (PHX): On-Time Performance
Data through May 2026
The calendar drives reliability on MKE–PHX. October 2024 flights landed on schedule 91% of the time, but December 2025 dropped to 69% — a gap of 22 points. Across the full period the route averages 82% on-time against a national 78%. Morning departures also hold up better than evening ones (89% vs 72%), which matters most in the rough months.
- On-time
- 82%
- arrived <15 min late
- Avg delay
- 15 min
- completed flights
- Cancelled
- 0.6%
- Flights/day
- 4.1
- last 12 months
- Duration
- 3h 50m
- scheduled
- Distance
- 1,460 mi
Best airline from MKE to PHX
2 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Southwest Airlinesmost reliable | 84% | 10 min | 0.4% | 2,015 |
| American Airlines | 79% | 26 min | 1.0% | 973 |
Monthly on-time trend
Best time to fly from MKE to PHX
Aim for departures around 8 a.m. (97% on-time); avoid 8 p.m. departures (67%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 83% | 16 min |
| Tuesdaybest | 85% | 9 min |
| Wednesday | 84% | 12 min |
| Thursday | 78% | 18 min |
| Friday | 83% | 18 min |
| Saturday | 81% | 16 min |
| Sunday | 81% | 17 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft40%
- Airline operations47%
- National airspace system11%
- Weather2%
Frequently asked questions
- How often are flights from MKE to PHX delayed?
- 18% of MKE–PHX flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 15 minutes.
- Which airline is most reliable from MKE to PHX?
- Southwest Airlines has the best on-time record on this route at 84%, based on 2,015 flights. 2 airlines flew MKE–PHX frequently enough to compare in this period.
- What is the best time of day to fly from MKE to PHX?
- Departures around 8 a.m. have the best record (97% on-time), while departures around 8 p.m. have the worst (67%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from MKE to PHX?
- The scheduled MKE–PHX flight time averages 3h 50m over 1,460 miles. Actual arrival times vary — flights on this route land 15+ minutes late 18% of the time.
- How often are MKE to PHX flights cancelled?
- 0.6% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from MKE to PHX?
- December 2025 was the roughest month in this dataset, with only 69% of arrivals on time. The best was October 2024 at 91%. If your dates are flexible, that 22-point gap is worth planning around.
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Based on 2,992 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.