Best Time to Fly PHX to MKE: On-Time Stats by Hour & Airline
Phoenix Sky Harbor International → General Mitchell International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 72.0% of Phoenix (PHX) to Milwaukee (MKE) flights arrived on time (1,452 scheduled flights). That is 5.6 points below the national average of 77.6%.
Among 2 airlines, American Airlines led with 78.7% on time and Southwest Airlines was last with 68.5%.
Over 24 months, Tuesday was the most reliable day (79% on time) and July the worst month (65%).
The cancellation rate was 0.9% (US average 1.8%).
PHX to MKE on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| American Airlines | 78.7% | 69 min | 1.4% | 488 |
| Southwest Airlines | 68.5% | 52 min | 0.6% | 960 |
| Frontier Airlines | Limited data | 4 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly PHX to MKE
On-time arrival % by scheduled departure hour (local time), 2,951 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 9 | |
| 6am–7am | Limited data | 6 | |
| 7am–8am | 88.6% | 0.0% | 124 |
| 8am–9am | 86.6% | 0.3% | 586 |
| 9am–10am | 82.2% | 0.3% | 322 |
| 10am–11am | 86.6% | 0.5% | 195 |
| 11am–12pm | 74.4% | 0.0% | 78 |
| 12pm–1pm | 71.4% | 0.0% | 57 |
| 1pm–2pm | 78.1% | 0.0% | 138 |
| 2pm–3pm | 64.7% | 1.9% | 160 |
| 3pm–4pm | 61.2% | 0.0% | 104 |
| 4pm–5pm | 69.5% | 0.3% | 303 |
| 5pm–6pm | 78.9% | 0.0% | 194 |
| 6pm–7pm | 66.9% | 0.3% | 345 |
| 7pm–8pm | 64.7% | 0.4% | 253 |
| 8pm–9pm | 59.6% | 5.0% | 60 |
| 9pm–10pm | Limited data | 15 | |
| 11pm–12am | Limited data | 2 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on PHX to MKE
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 67.2% | -10.8 pts | 4.9% | 61 |
| Christmas & New Year (Dec 20 - Jan 3) | 76.1% | -2.0 pts | 0.0% | 142 |
| Summer peak (Jun 15 - Aug 15) | 66.0% | -12.0 pts | 0.0% | 424 |
| All other days | 78.0% | — | 0.5% | 2,324 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).