Best Time to Fly DTW to ROC: On-Time Stats by Hour & Airline
Detroit Metro Wayne County → Frederick Douglass Grtr Rochester International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 75.8% of Detroit (DTW) to Rochester (ROC) flights arrived on time (483 scheduled flights). That is 1.8 points below the national average of 77.6%.
Delta Air Lines was the most punctual of the 2 airlines on the route at 77.0%, while SkyWest Airlines trailed at 75.4%.
October has been the best month (90% on time) and Friday the weakest day of the week (75%).
2.3% of flights were cancelled, versus 1.8% nationally.
DTW to ROC 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 |
|---|---|---|---|---|
| Delta Air Lines | 77.0% | 64 min | 3.4% | 118 |
| SkyWest Airlines | 75.4% | 119 min | 1.9% | 365 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DTW to ROC
On-time arrival % by scheduled departure hour (local time), 1,252 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 79.1% | 0.0% | 129 |
| 8am–9am | 85.1% | 3.1% | 97 |
| 10am–11am | 77.2% | 0.8% | 478 |
| 11am–12pm | Limited data | 17 | |
| 3pm–4pm | 69.4% | 1.4% | 74 |
| 4pm–5pm | 89.4% | 0.0% | 152 |
| 9pm–10pm | 82.3% | 1.6% | 305 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on DTW to ROC
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) | 60.0% | -20.5 pts | 0.0% | 35 |
| Christmas & New Year (Dec 20 - Jan 3) | 84.8% | +4.3 pts | 2.1% | 47 |
| Summer peak (Jun 15 - Aug 15) | 82.6% | +2.1 pts | 1.2% | 256 |
| All other days | 80.5% | — | 1.0% | 914 |
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).