Grand Rapids (GRR) to Detroit (DTW): On-Time Performance
Data through May 2026
The calendar drives reliability on GRR–DTW. September 2025 flights landed on schedule 92% of the time, but December 2025 dropped to 50% — a gap of 42 points. Across the full period the route averages 80% on-time against a national 78%. Morning departures also hold up better than evening ones (84% vs 73%), which matters most in the rough months.
- On-time
- 80%
- arrived <15 min late
- Avg delay
- 19 min
- completed flights
- Cancelled
- 0.8%
- Flights/day
- 4.3
- last 12 months
- Duration
- 60m
- scheduled
- Distance
- 120 mi
Best airline from GRR to DTW
3 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Delta Air Linesmost reliable | 89% | 8 min | 1.5% | 389 |
| Republic Airways | 84% | 9 min | 0.0% | 90 |
| SkyWest Airlines | 78% | 22 min | 0.7% | 2,558 |
Monthly on-time trend
Best time to fly from GRR to DTW
Aim for departures around 1 p.m. (91% on-time); avoid 7 p.m. departures (69%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 77% | 21 min |
| Tuesday | 79% | 21 min |
| Wednesday | 82% | 17 min |
| Thursday | 79% | 22 min |
| Friday | 78% | 20 min |
| Saturdaybest | 85% | 13 min |
| Sunday | 81% | 21 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft1%
- Airline operations70%
- National airspace system9%
- Weather20%
Frequently asked questions
- How often are flights from GRR to DTW delayed?
- 20% of GRR–DTW flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 19 minutes.
- Which airline is most reliable from GRR to DTW?
- Delta Air Lines has the best on-time record on this route at 89%, based on 389 flights. 3 airlines flew GRR–DTW frequently enough to compare in this period.
- What is the best time of day to fly from GRR to DTW?
- Departures around 1 p.m. have the best record (91% on-time), while departures around 7 p.m. have the worst (69%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from GRR to DTW?
- The scheduled GRR–DTW flight time averages 60m over 120 miles. Actual arrival times vary — flights on this route land 15+ minutes late 20% of the time.
- How often are GRR to DTW flights cancelled?
- 0.8% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from GRR to DTW?
- December 2025 was the roughest month in this dataset, with only 50% of arrivals on time. The best was September 2025 at 92%. If your dates are flexible, that 42-point gap is worth planning around.
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Based on 3,055 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.