Best time to fly Provo to Phoenix
Every month pooled across the years on record, so "July" means July generally rather than one particular July. Full PVU to AZA record →
Best month
August
93.3% on time · 104 flights
Worst month
July
71.4% on time · 107 flights
| Month | Flights | On time | Cancelled | When late, by |
|---|---|---|---|---|
| January | 96 | 83.3% | 0% | 129 min |
| February | 95 | 87.4% | 0% | 167 min |
| March | 161 | 82% | 0% | 67 min |
| April | 131 | 74.8% | 0% | 173 min |
| May | 113 | 78.8% | 0% | 171 min |
| June | 118 | 87.1% | 0.85% | 281 min |
| July | 107 | 71.4% | 1.87% | 170 min |
| August | 104 | 93.3% | 0% | 39 min |
| September | 96 | 91.7% | 0% | 63 min |
| October | 103 | 85.4% | 0% | 143 min |
| November | 123 | 88.5% | 0.81% | 192 min |
| December | 138 | 81.9% | 0% | 133 min |
What a seasonal pattern can and cannot tell you
Months differ for reasons that repeat — summer thunderstorms in the American interior, winter fog and de-icing in northern Europe, school holidays filling every seat and leaving no slack in the schedule. Those are real and they come back each year.
What the pattern cannot do is forecast a particular flight. A quiet month has late days and a bad month has punctual ones. Treat this as a way to choose between two dates you are indifferent about, not as a promise.