Best Time to Fly DTW to GRR: On-Time Stats by Hour & Airline
Detroit Metro Wayne County → Gerald R. Ford International
Data through July 2026 · Last updated October 18, 2026
1,590 flights were scheduled from Detroit (DTW) to Grand Rapids (GRR) in the last 12 months, and 74.5% of those that flew arrived on time, 3.1 points below the US average of 77.6%.
Republic Airways was the most punctual of the 2 airlines on the route at 95.6%, while SkyWest Airlines trailed at 73.7%.
September has been the best month (88% on time) and Friday the weakest day of the week (73%).
0.9% of flights were cancelled, versus 1.8% nationally.
DTW to GRR 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 |
|---|---|---|---|---|
| Republic Airways | 95.6% | 60 min | 0.0% | 90 |
| SkyWest Airlines | 73.7% | 101 min | 0.9% | 1,484 |
| Delta Air Lines | Limited data | 16 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DTW to GRR
On-time arrival % by scheduled departure hour (local time), 2,999 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 8am–9am | 77.8% | 0.8% | 509 |
| 9am–10am | 80.6% | 0.0% | 36 |
| 10am–11am | 95.9% | 0.0% | 49 |
| 12pm–1pm | 75.3% | 0.0% | 489 |
| 2pm–3pm | 75.4% | 0.8% | 357 |
| 3pm–4pm | 85.4% | 0.0% | 41 |
| 4pm–5pm | 79.5% | 0.2% | 407 |
| 5pm–6pm | 63.6% | 2.2% | 135 |
| 6pm–7pm | 74.7% | 0.0% | 241 |
| 7pm–8pm | 69.0% | 0.0% | 126 |
| 8pm–9pm | 73.9% | 0.0% | 165 |
| 9pm–10pm | 79.5% | 0.6% | 177 |
| 10pm–11pm | 66.1% | 3.5% | 226 |
| 11pm–12am | 80.5% | 0.0% | 41 |
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 GRR
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) | 57.1% | -20.1 pts | 2.8% | 72 |
| Christmas & New Year (Dec 20 - Jan 3) | 59.5% | -17.8 pts | 0.9% | 112 |
| Summer peak (Jun 15 - Aug 15) | 73.4% | -3.8 pts | 1.0% | 403 |
| All other days | 77.2% | — | 0.5% | 2,412 |
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).