Carrier route record
MQORD→GRB
Envoy Air · Chicago to Green Bay
- Flights
- 1,375
- Period
- July 2025 to June 2026
- Share of route
- 50%
- Carriers
- 3
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Envoy Air.
Envoy on ORD to GRB carries a cancellation problem, not just a delay problem: 3.7% of scheduled flights never operate, against 1.8% nationally. Of the ones that do fly, close to three flights in four arrive on time, worth a C− overall. The punctuality figure counts only flights that actually departed, so it flatters an operation that cancels this often. That rests on 1,375 flights, with a median arrival 4 minutes early.
The US average over the same twelve months is 77.6%, so there is little to separate Envoy on ORD 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
74.3%
Arrivals under 15 minutes late, of 1,321 completed flights
Avg delay
66 min
Across delayed arrivals only, not all flights
Cancelled
3.71%
National rate is 1.81%
Whole route
68.8%
Every carrier on ORD to GRB, 2,775 flights
These figures cover 1,375 flights between July 2025 and June 2026. Beyond the headline rate, 9.1% 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
Envoy against every carrier on ORD to GRB
Envoy flew 1,375 of the 2,775 flights on ORD to GRB, about 50% of it. Its 74.3% on time is 6 points better than the route as a whole, which runs 68.8%. Ranked by on-time rate it is number two of three carriers on the route, where the range runs from Republic at 79.1% to SkyWest at 61.2%. 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 |
|---|---|---|---|---|---|
| Republic Airwaysthin sample | 166 | 79.1% | 108 min | 4.82% | B− |
| Envoy Air (this page) | 1,375 | 74.3% | 66 min | 3.71% | C− |
| SkyWest Airlines | 1,234 | 61.2% | 85 min | 4.86% | D− |
Departure window
When Envoy runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 19 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am—
- 8am–11am353 flights85.4%
- 11am–2pm198 flights79.7%
- 2pm–5pm147 flights66.2%
- 5pm–8pm298 flights68.9%
- 8pm–5am379 flights68.1%
Scale runs 60% to 90%. Rows with fewer than 30 flights show a dash.
Book the morning departure. Flights leaving between 8am–11am arrive on time 85.4% of the time, against 66.2% for the afternoon window. That is 19 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 8pm–5am window is the busiest, with 379 flights scheduled in it.
Across the year
Envoy on ORD to GRB through the year
December is the weak month at 55.6% on time, against 85.5% in October. 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. November was the busiest month here, with 143 flights.
Across the week, Saturday is the strongest day at 81.0% on time and Sunday the weakest at 67.0%. 14 points is a smaller lever than departure hour, but it is free.
Delay causes
Why Envoy runs late on this route
One category carries most of the weight here. Late-arriving aircraft accounts for 46% of the 22,000 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.
- 46%Late-arriving aircraft
- 21%National Airspace System
- 18%Extreme weather
- 16%Carrier
Extreme weather accounts for 18% 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 2.9 times the usual weather exposure. The split is drawn from 22,297 reported delay minutes.
46% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 22,000 reported delay minutes here, that single category outweighs weather by 3 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit.
Cancellations run at 3.71%, against 1.81% nationally. That is about one flight in 25 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
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. 9.1% 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 173 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 runs 75.1% on time across 1,375 flights, within about a point of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
The sample behind these figures is 1,375 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.
What to do with this
Booking Envoy on ORD to GRB
Put together: the delay figures matter less here than the 3.71% cancellation rate. A late arrival costs you about an hour; a cancelled flight costs you the day. Book the 8am–11am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 1,321 completed flights over 12 months sit behind that.
Related
Where to go next
- ORD to GRB, every carrier
- Envoy on GRB to ORD, the return leg
- Republic Airways on ORD to GRB79.1%
- SkyWest Airlines on ORD to GRB61.2%
- Envoy Air network-wide record
- Chicago O'Hare International (ORD) delay statistics
- The US routes with the most cancellations
- Why the first flight of the morning is statistically safest
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.