Carrier route record
OODTW→GRB
SkyWest Airlines · Detroit to Green Bay
- Flights
- 626
- Period
- July 2025 to June 2026
- Share of route
- 77%
- Carriers
- 2
Historical statistics for July 2025 to June 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 C. Close to three flights in four arrive on time by the DOT's definition, 4 points worse than the national rate of 77.6%. The late ones land close to two hours behind schedule. That rests on 626 flights, with a median arrival 7 minutes early.
The US average over the same twelve months is 77.6%, 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
73.7%
Arrivals under 15 minutes late, of 608 completed flights
Avg delay
110 min
Across delayed arrivals only, not all flights
Cancelled
2.40%
National rate is 1.81%
Whole route
72.3%
Every carrier on DTW to GRB, 812 flights
These figures cover 626 flights between July 2025 and June 2026. Beyond the headline rate, 15.8% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Carrier by carrier
SkyWest against every carrier on DTW to GRB
SkyWest flew 626 of the 812 flights on DTW to GRB, most of the route. Its 73.7% on time is about level with the route as a whole at 72.3%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from SkyWest at 73.7% 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) | 626 | 73.7% | 110 min | 2.40% | C |
| Delta Air Linesthin sample | 186 | 67.8% | 58 min | 1.61% | C |
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 626 flights.
- 5am–8am—
- 8am–11am265 flights76.4%
- 11am–2pm—
- 2pm–5pm71 flights75.7%
- 5pm–8pm27 flights—
- 8pm–5am263 flights69.6%
Scale runs 60% to 80%. Rows with fewer than 30 flights show a dash.
The early departures do better, though not dramatically: 76.4% on time for the 8am–11am window against 69.6% for 8pm–5am. Worth taking if the schedule allows, not worth an extra connection. The 8am–11am window is the busiest, with 265 flights scheduled in it.
Across the year
SkyWest on DTW to GRB through the year
December is the weak month at 53.6% on time, against 91.2% in June. 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 83.5% on time and Wednesday the weakest at 67.1%. 16 points is a smaller lever than departure hour, but it is free.
Delay causes
Why SkyWest runs late on this route
One category carries most of the weight here. Carrier accounts for 70% of the 18,000 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 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 3.5 times the usual weather exposure. The split is drawn from 17,603 reported delay minutes.
The largest share of delay minutes, 70%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 12,000 of the 18,000 delay minutes reported here.
Cancellations sit at 2.40% against a national 1.81%, which is ordinary. Diversions add another 0.48%.
Connections and stage length
What a delay here costs
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 15.8% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum 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 8am–11am window matters as much as it does.
The return leg is a different operation and performs like one: it runs 79.9% on time across 625 flights, 6 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 6 points of difference.
One caution: this is a thin sample. 626 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. 626 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 73.7% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 608 completed flights over 12 months sit behind that.
Related
Where to go next
Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.