Green Bay (GRB) to Detroit (DTW): On-Time Performance
Data through July 2026
The calendar drives reliability on GRB–DTW. June 2026 flights landed on schedule 97% of the time, but March 2026 dropped to 67% — a gap of 30 points. Across the full period the route averages 83% on-time against a national 78%.
- On-time
- 83%
- arrived <15 min late
- Avg delay
- 17 min
- completed flights
- Cancelled
- 1.2%
- Flights/day
- 2.4
- last 12 months
- Duration
- 1h 20m
- scheduled
- Distance
- 287 mi
Best airline from GRB to DTW
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlinesmost reliable | 84% | 17 min | 1.1% | 1,589 |
| Delta Air Lines | 80% | 15 min | 1.6% | 187 |
Monthly on-time trend
Best time to fly from GRB to DTW
Aim for departures around 6 a.m. (94% on-time); avoid 4 p.m. departures (76%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Mondaybest | 86% | 17 min |
| Tuesday | 84% | 19 min |
| Wednesday | 85% | 13 min |
| Thursday | 82% | 20 min |
| Friday | 82% | 21 min |
| Saturday | 82% | 14 min |
| Sunday | 82% | 17 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft7%
- Airline operations67%
- National airspace system5%
- Weather21%
Frequently asked questions
- How often are flights from GRB to DTW delayed?
- 17% of GRB–DTW flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 17 minutes.
- Which airline is most reliable from GRB to DTW?
- SkyWest Airlines has the best on-time record on this route at 84%, based on 1,589 flights. 2 airlines flew GRB–DTW frequently enough to compare in this period.
- What is the best time of day to fly from GRB to DTW?
- Departures around 6 a.m. have the best record (94% on-time), while departures around 4 p.m. have the worst (76%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from GRB to DTW?
- The scheduled GRB–DTW flight time averages 1h 20m over 287 miles. Actual arrival times vary — flights on this route land 15+ minutes late 17% of the time.
- How often are GRB to DTW flights cancelled?
- 1.2% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from GRB to DTW?
- March 2026 was the roughest month in this dataset, with only 67% of arrivals on time. The best was June 2026 at 97%. If your dates are flexible, that 30-point gap is worth planning around.
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Based on 1,776 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.