Best time to fly Chicago to Hancock/Houghton
Every month pooled across the years on record, so "July" means July generally rather than one particular July. Full ORD to CMX record →
Best month
November
80.2% on time · 118 flights
Worst month
March
54.5% on time · 124 flights
| Month | Flights | On time | Cancelled | When late, by |
|---|---|---|---|---|
| January | 124 | 67% | 11.29% | 108 min |
| February | 112 | 58.8% | 7.14% | 130 min |
| March | 124 | 54.5% | 10.48% | 115 min |
| April | 120 | 74.5% | 6.67% | 185 min |
| May | 124 | 76.7% | 1.61% | 109 min |
| June | 128 | 66.4% | 3.13% | 133 min |
| July | 145 | 58.9% | 2.07% | 112 min |
| August | 146 | 68.1% | 1.37% | 89 min |
| September | 140 | 75.6% | 0% | 128 min |
| October | 124 | 77.4% | 0% | 46 min |
| November | 118 | 80.2% | 5.93% | 132 min |
| December | 123 | 61.8% | 8.94% | 186 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.