Carrier route record
MQORD→RST
Envoy Air · Chicago to Rochester
- Flights
- 547
- Period
- July 2025 to June 2026
- Share of route
- 52%
- Carriers
- 2
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Envoy Air.
Envoy on ORD to RST 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 about 50 minutes behind schedule. That rests on 547 flights, with a median arrival 3 minutes early.
The national on-time rate over the same period is 77.6%, so Envoy on ORD to RST runs 4 points behind the country as a whole. Across a thousand flights that is about 43 extra late arrivals.
Key figures
On time
73.3%
Arrivals under 15 minutes late, of 517 completed flights
Avg delay
51 min
Across delayed arrivals only, not all flights
Cancelled
4.94%
National rate is 1.81%
Whole route
63.8%
Every carrier on ORD to RST, 1,053 flights
These figures cover 547 flights between July 2025 and June 2026. The median arrival is 3 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
Carrier by carrier
Envoy against every carrier on ORD to RST
Envoy flew 547 of the 1,053 flights on ORD to RST, most of the route. Its 73.3% on time is 10 points better than the route as a whole, which runs 63.8%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from Envoy at 73.3% to SkyWest at 53.6%.
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 |
|---|---|---|---|---|---|
| Envoy Air (this page) | 547 | 73.3% | 51 min | 4.94% | C− |
| SkyWest Airlines | 506 | 53.6% | 115 min | 3.95% | F− |
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 13 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–11am247 flights72.0%
- 11am–2pm76 flights84.0%
- 2pm–5pm107 flights70.9%
- 5pm–8pm—
- 8pm–5am117 flights71.0%
Scale runs 60% to 90%. Rows with fewer than 30 flights show a dash.
The best window here is not the first bank but the 11am–2pm slot at 84.0% on time, ahead of 2pm–5pm at 70.9%. Where the curve peaks mid-day rather than at dawn, the constraint is usually congestion at one end rather than the aircraft's own rotation. The 8am–11am window is the busiest, with 247 flights scheduled in it.
Across the year
Envoy on ORD to RST through the year
December is the weak month at 48.0% on time, against 94.0% in May. 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. April was the busiest month here, with 88 flights.
Across the week, Saturday is the strongest day at 84.1% on time and Thursday the weakest at 61.8%. 22 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 43% of the 7,038 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.
- 43%Late-arriving aircraft
- 25%National Airspace System
- 22%Carrier
- 10%Extreme weather
43% 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 7,038 reported delay minutes here, that single category outweighs weather by 5 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. The split is drawn from 7,038 reported delay minutes.
Cancellations run at 4.94%, against 1.81% nationally. That is about one flight in twenty 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
7.2% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about 50 minutes, which a normal layover absorbs.
At 268 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 11am–2pm window matters as much as it does.
The return leg runs 73.4% on time across 547 flights, within half a point of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
One caution: this is a thin sample. 547 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 Envoy on ORD to RST
Put together: the delay figures matter less here than the 4.94% cancellation rate. A late arrival costs you about 50 minutes; a cancelled flight costs you the day. Book the 11am–2pm departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 517 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.