Route Reliability
Detroit → GRB
DTW–GRB · 287 miles · Detroit Metropolitan Wayne County Airport to GRB Airport
- 75%
- Arrive within 15 minutes
- 16 min
- Average arrival delay
- 1.9%
- Cancelled
- 1,079
- Flights in the data
Data through May 2026.
Delta Air Lines is the only airline in this data on this route, arriving on time 75% of the time across 1,079 flights. No comparison to make.
What the data says
The late departure is the smart one here.
DTW–GRB flights departing between 9 PM–12 AM arrived on time 89% of the time, versus 72% between 6–9 PM.
Wednesdays have been rough.
DTW–GRB flights arrived on time 85% of the time on Saturdays and just 68% on Wednesdays. That gap is worth planning around.
Trending in the right direction.
DTW–GRB flights arrived on time 72% of the time over the last three months in the data, compared with 62% in the three months before that.
Best historical flights
Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.
Top flights by on-time rate
More flights on this route
The breakdown
- Mon70%(149 flights)
- Tue79%(152 flights)
- Wed68%(152 flights)
- Thu83%(151 flights)
- Fri70%(152 flights)
- Sat85%(148 flights)
- Sun73%(151 flights)
- 6–9 AM—(1 flights)
- 9 AM–12 PM81%(354 flights)
- 12–3 PM—(1 flights)
- 3–6 PM72%(353 flights)
- 6–9 PM72%(319 flights)
- 9 PM–12 AM89%(27 flights)
Jun 77% → May 79% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 77% | 85 |
| July 2025 | 79% | 86 |
| August 2025 | 84% | 91 |
| September 2025 | 93% | 91 |
| October 2025 | 88% | 93 |
| November 2025 | 79% | 82 |
| December 2025 | 54% | 87 |
| January 2026 | 58% | 90 |
| February 2026 | 75% | 84 |
| March 2026 | 65% | 86 |
| April 2026 | 72% | 89 |
| May 2026 | 79% | 91 |
Keep nerding
Based on 1,079 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.