Carrier route record
MQORD→COU
Envoy Air · Chicago to Columbia
- Flights
- 1,124
- Period
- July 2025 to June 2026
- Share of route
- 59%
- 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 COU 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 an hour behind schedule. That rests on 1,124 flights, with a median arrival 7 minutes early.
The national on-time rate over the same period is 77.6%, so Envoy on ORD to COU runs 4 points behind the country as a whole. Across a thousand flights that is about 40 extra late arrivals.
Key figures
On time
73.6%
Arrivals under 15 minutes late, of 1,091 completed flights
Avg delay
65 min
Across delayed arrivals only, not all flights
Cancelled
2.58%
National rate is 1.81%
Whole route
70.4%
Every carrier on ORD to COU, 1,903 flights
These figures cover 1,124 flights between July 2025 and June 2026. Beyond the headline rate, 9.9% 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 COU
Envoy flew 1,124 of the 1,903 flights on ORD to COU, most of the route. Its 73.6% on time is 3 points better than the route as a whole, which runs 70.4%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from Envoy at 73.6% to SkyWest at 65.8%.
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) | 1,124 | 73.6% | 65 min | 2.58% | C |
| SkyWest Airlines | 779 | 65.8% | 100 min | 4.88% | C− |
Flight by flight
Envoy flight numbers on ORD to COU
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–11am297 flights80.1%
- 11am–2pm161 flights76.9%
- 2pm–5pm172 flights80.5%
- 5pm–8pm283 flights61.7%
- 8pm–5am211 flights72.3%
Scale runs 55% to 85%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is where this operation falls apart: 61.7% on time, against 80.5% for the 2pm–5pm slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 8am–11am window is the busiest, with 297 flights scheduled in it.
Across the year
Envoy on ORD to COU through the year
December is the weak month at 56.5% on time, against 91.2% 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. October was the busiest month here, with 117 flights.
Across the week, Tuesday is the strongest day at 79.2% on time and Sunday the weakest at 70.1%. 9 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 53% of the 19,000 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.
- 53%Late-arriving aircraft
- 20%National Airspace System
- 14%Carrier
- 13%Extreme weather
Extreme weather accounts for 13% 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 2.0 times the usual weather exposure. The split is drawn from 18,776 reported delay minutes.
53% 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 19,000 reported delay minutes here, that single category outweighs weather by 4 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 2.58%, against 1.81% nationally. That is about one flight in 40 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. 9.9% 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 315 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 2pm–5pm window matters as much as it does.
The return leg runs 75.7% on time across 1,125 flights, within 2 points 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 1,124 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 COU
Put together: the calendar is the biggest lever here, not the carrier or the hour. May runs 91.2% on time and December 56.5%, a swing of 35 points. If the dates move at all, move them out of December before you think about anything else. 1,091 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.