Carrier route record
MQORD→COU
Envoy Air · Chicago to Columbia
- Flights
- 1,151
- Period
- September 2025 to August 2026
- Share of route
- 56%
- Carriers
- 2
Historical statistics for September 2025 to August 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, 3 points worse than the national rate of 77.3%. The late ones land a little over an hour behind schedule. That rests on 1,151 flights, with a median arrival 7 minutes early.
The US average over the same twelve months is 77.3%, so there is little to separate Envoy on ORD to COU from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
73.9%
Arrivals under 15 minutes late, of 1,115 completed flights
Avg delay
69 min
Across delayed arrivals only, not all flights
Cancelled
2.69%
National rate is 1.89%
Whole route
70.8%
Every carrier on ORD to COU, 2,054 flights
These figures cover 1,151 flights between September 2025 and August 2026. Beyond the headline rate, 10.1% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
Envoy against every carrier on ORD to COU
Envoy flew 1,151 of the 2,054 flights on ORD to COU, most of the route. Its 73.9% on time is 3 points better than the route as a whole, which runs 70.8%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from Envoy at 73.9% to SkyWest at 66.7%.
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) | 1,151 | 73.9% | 69 min | 2.69% | C |
| SkyWest Airlines | 903 | 66.7% | 103 min | 5.09% | C− |
Flight by flight
Envoy flight numbers on ORD to COU
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 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.
- 5am–8am—
- 8am–11am308 flights80.4%
- 11am–2pm165 flights76.8%
- 2pm–5pm232 flights76.7%
- 5pm–8pm263 flights61.9%
- 8pm–5am183 flights73.7%
Scale runs 55% to 85%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is where this operation falls apart: 61.9% on time, against 80.4% for the 8am–11am 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 308 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 79.4% on time and Sunday the weakest at 70.1%, a spread of 9 points.
Arrival by arrival
How late Envoy on ORD to COU runs when it is late
Envoy on ORD to COU often beats the schedule: 392 of 1,115 completed flights, 35%, arrived 15 minutes or more early. The 291 late arrivals split 90 under half an hour, 88 between 30 and 60 minutes, and 113 an hour or more.
- 15+ min early392 flights35.2%
- Within 15 min432 flights38.7%
- 15–29 min late90 flights8.1%
- 30–59 min late88 flights7.9%
- 1–2 hours late71 flights6.4%
- 2+ hours late42 flights3.8%
Scale runs 0% to 100%.
Share of 1,115 completed flights by arrival against schedule.
47 of 278 late departures made up the time and arrived on time, 17% of them. In the other direction, 60 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at COU.
The worst days
Worst days for Envoy on ORD to COU
The latest arrival of the period was on 26 March 2026, 7 hours 25 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 26 March 2026 | 7 hours 25 minutes | Late-arriving aircraft |
| 15 March 2026 | 6 hours 16 minutes | Late-arriving aircraft |
| 13 August 2026 | 5 hours 16 minutes | Late-arriving aircraft |
| 25 January 2026 | 4 hours 59 minutes | Extreme weather |
| 30 November 2025 | 4 hours 57 minutes | Extreme weather |
Delay causes
Why Envoy runs late on this route
Late-arriving aircraft accounts for 55% of the 20,000 delay minutes carriers reported here, and the remaining four split what is left.
- 55%Late-arriving aircraft
- 19%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 2.1 times the usual weather exposure. The split is drawn from 19,929 reported delay minutes.
55% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 20,000 reported delay minutes here, that single category outweighs weather by 4 to one.
Cancellations run at 2.69%, against 1.89% 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
10.1% 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 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 8am–11am window matters as much as it does.
The return leg is a different operation and performs like one: it runs 76.9% on time across 1,152 flights, 3 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 3 points of difference.
The sample behind these figures is 1,151 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. 1,115 completed flights over 12 months sit behind that.
Related
Where to go next
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.