Carrier route record
OODTW→GRB
SkyWest Airlines · Detroit to Green Bay
- Flights
- 737
- Period
- September 2025 to August 2026
- Share of route
- 80%
- Carriers
- 2
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with SkyWest Airlines.
SkyWest on DTW to GRB sits in the middle of the pack with a B. Close to three flights in four arrive on time by the DOT's definition, 2 points worse than the national rate of 77.3%. The late ones land close to two hours behind schedule. That rests on 737 flights, with a median arrival 8 minutes early.
The US average over the same twelve months is 77.3%, so there is little to separate SkyWest on DTW to GRB from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
75.5%
Arrivals under 15 minutes late, of 719 completed flights
Avg delay
108 min
Across delayed arrivals only, not all flights
Cancelled
2.04%
National rate is 1.89%
Whole route
73.9%
Every carrier on DTW to GRB, 923 flights
These figures cover 737 flights between September 2025 and August 2026. Beyond the headline rate, 14.6% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
SkyWest against every carrier on DTW to GRB
SkyWest flew 737 of the 923 flights on DTW to GRB, most of the route. Its 75.5% on time is 2 points better than the route as a whole, which runs 73.9%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from SkyWest at 75.5% to Delta at 67.8%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| SkyWest Airlines (this page) | 737 | 75.5% | 108 min | 2.04% | B |
| Delta Air Linesthin sample | 186 | 67.8% | 58 min | 1.61% | C |
Flight by flight
SkyWest flight numbers on DTW to GRB
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Departure window
When SkyWest runs best on this route
Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 737 flights.
- 5am–8am—
- 8am–11am327 flights79.7%
- 11am–2pm—
- 2pm–5pm56 flights74.5%
- 5pm–8pm31 flights80.6%
- 8pm–5am323 flights71.0%
Scale runs 65% to 85%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is the strongest at 80.6% on time. The full set of windows spans 10 points.
Across the year
SkyWest on DTW to GRB through the year
December is the weak month at 53.6% on time, against 93.7% in August. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. May was the busiest month here, with 93 flights.
Across the week, Thursday is the strongest day at 85.1% on time and Sunday the weakest at 70.5%, a spread of 15 points.
Arrival by arrival
How late SkyWest on DTW to GRB runs when it is late
SkyWest on DTW to GRB often beats the schedule: 229 of 719 completed flights, 32%, arrived 15 minutes or more early. When SkyWest on DTW to GRB is late it tends to be very late: 105 of its 176 late arrivals were an hour or more behind, and 55 were two hours or more.
- 15+ min early229 flights31.8%
- Within 15 min314 flights43.7%
- 15–29 min late33 flights4.6%
- 30–59 min late38 flights5.3%
- 1–2 hours late50 flights7.0%
- 2+ hours late55 flights7.6%
Scale runs 0% to 100%.
Share of 719 completed flights by arrival against schedule.
26 of 183 late departures made up the time and arrived on time, 14% of them. 19 flights left on time and still arrived late.
The worst days
Worst days for SkyWest on DTW to GRB
The latest arrival of the period was on 14 December 2025, 17 hours 18 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 14 December 2025 | 17 hours 18 minutes | Carrier |
| 2 July 2026 | 7 hours 39 minutes | Carrier |
| 17 March 2026 | 6 hours 16 minutes | Carrier |
| 21 January 2026 | 6 hours 5 minutes | Carrier |
| 27 April 2026 | 6 hours 5 minutes | Extreme weather |
Delay causes
Why SkyWest runs late on this route
Carrier accounts for 70% of the 19,000 delay minutes carriers reported here, and the remaining four split what is left.
- 70%Carrier
- 22%Extreme weather
- 8%National Airspace System
Extreme weather accounts for 22% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the monthly strip above is the more useful view of the risk. The national share is 6%, so this operation carries roughly 3.7 times the usual weather exposure. The split is drawn from 18,929 reported delay minutes.
The largest share of delay minutes, 70%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 13,000 of the 19,000 delay minutes reported here.
Cancellations sit at 2.04% against a national 1.89%, which is ordinary. Diversions add another 0.41%.
Connections and stage length
What a delay here costs
14.6% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
At 287 miles this is a short hop, and stage length matters more than it looks. A flight this short spends under two hours in the air, which leaves almost nothing to claw back a late pushback with. Delay here is decided on the ground, in the turn, which is why the 5pm–8pm window matters as much as it does.
The return leg is a different operation and performs like one: it runs 82.7% on time across 737 flights, 7 points above this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 7 points of difference.
One caution: this is a thin sample. 737 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking SkyWest on DTW to GRB
Put together: treat all of this as provisional. 737 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 75.5% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 719 completed flights over 12 months sit behind that.
Related
Where to go next
- DTW to GRB, every carrier
- SkyWest on GRB to DTW, the return leg
- Delta Air Lines on DTW to GRB67.8%
- SkyWest Airlines network-wide record
- Detroit Metropolitan Wayne County (DTW) delay statistics
- The best time of day to fly, according to 7.05 million flight records
- How often a connection fails at the major US hubs
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.