Flight number record
MQ 3745
Envoy Air · Chicago to Columbia
- Route
- ORD → COU
- Departs
- 18:50
- Flights
- 302
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s MQ 3745, check with Envoy Air. Envoy Air flies under contract for larger airlines, so a ticket for this flight may show a different airline code and number.
MQ 3745 draws a C−. About one flight in three arrives at least 15 minutes late, and the typical late arrival is a little over an hour behind schedule. Build slack into anything you connect to. That rests on 302 flights, with a median arrival 4 minutes early.
The national on-time rate over the same period is 77.3%, so MQ 3745 runs 10 points behind the country as a whole. Across a thousand flights that is about 104 extra late arrivals.
Key figures
On time
66.9%
Arrivals under 15 minutes late, of 290 completed flights
Avg delay
72 min
Across delayed arrivals only, not all flights
Cancelled
3.97%
National rate is 1.89%
1 hour+ late
14.1%
National rate is 8.3%
These figures cover 302 flights between September 2025 and August 2026. Beyond the headline rate, 14.1% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When MQ 3745 flies
MQ 3745 flies ORD to COU without a single fixed slot. Its most common scheduled departure was 18:50, used on 47 of 302 flights, with 19:40 (36 flights) next.
- Departs 18:5047 flights15.6%
- Departs 19:4036 flights11.9%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 18:50 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and MQ 3745 runs level with that at 66.9%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
MQ 3745 next to ORD to COU
Every carrier on ORD to COU combined arrived on time 70.8% of the time across 2,054 flights, so MQ 3745 is 4 points behind it. Envoy flew 1,151 flights on the same city pair under all its flight numbers, including this one, and those ran 73.9% on time. Across its whole network Envoy Air managed 81.0%, which this flight trails by 14 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| MQ 3745thin sample | 302 | 66.9% | 72 min | 3.97% | C− |
| All Envoy Air on ORD–COU | 1,151 | 73.9% | 69 min | 2.69% | C |
| All carriers on ORD–COU | 2,054 | 70.8% | 86 min | 3.75% | C− |
| Envoy Air, whole network | 320,362 | 81.0% | 70 min | 2.19% | B |
Across the year
MQ 3745 quarter by quarter
MQ 3745 did not run the same all year. Its best quarter was Apr–Jun 2026 at 77.9% on time and its weakest Oct–Dec 2025 at 60.3%, a swing of 18 points on roughly 76 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Jul–Sep 202511 flights—
- Oct–Dec 202575 flights60.3%
- Jan–Mar 202690 flights62.1%
- Apr–Jun 202691 flights77.9%
- Jul–Sep 202635 flights63.6%
Scale runs 50% to 85%. Rows with fewer than 30 flights show a dash.
By weekday, MQ 3745 did best on Tuesday at 76.3% on time and worst on Thursday at 59.1%. Each day rests on about 43 flights, so a gap of 17 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late MQ 3745 runs when it is late
MQ 3745 often beats the schedule: 94 of 290 completed flights, 32%, arrived 15 minutes or more early. The 96 late arrivals split 30 under half an hour, 25 between 30 and 60 minutes, and 41 an hour or more.
- 15+ min early94 flights32.4%
- Within 15 min100 flights34.5%
- 15–29 min late30 flights10.3%
- 30–59 min late25 flights8.6%
- 1–2 hours late27 flights9.3%
- 2+ hours late14 flights4.8%
Scale runs 0% to 100%.
Share of 290 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 88 departures that left 15 minutes late or more, only 8 made it up before arrival. In the other direction, 16 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 MQ 3745
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 five 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 |
| 17 July 2026 | 4 hours 10 minutes | Late-arriving aircraft |
| 24 June 2026 | 3 hours 47 minutes | Late-arriving aircraft |
| 26 November 2025 | 3 hours 32 minutes | Late-arriving aircraft |
Delay causes
Why MQ 3745 runs late
Late-arriving aircraft accounts for 53% of the 6,897 delay minutes carriers reported here, and the remaining four split what is left.
- 53%Late-arriving aircraft
- 20%National Airspace System
- 17%Carrier
- 10%Extreme weather
53% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 6,897 reported delay minutes here, that single category outweighs weather by 5 to one. The split is drawn from 6,897 delay minutes reported on MQ 3745.
Cancellations run at 3.97%, against 1.89% 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 routes
What a delay on this flight costs
14.1% 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.
The same number turns up on two other city pairs in the data, including COU to CLT (27) and RST to ORD (2), but none flew often enough under MQ 3745 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to ORD to COU only.
One caution: this is a thin sample. 302 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 MQ 3745
For a booking, the cancellation rate is the figure to plan around on MQ 3745: 3.97% of its 302 scheduled flights did not operate. A late arrival costs a little over an hour, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- ORD to COU, every carrier and departure
- COU to ORD, the return direction
- SkyWest Airlines 5521 on the same route71.3%
- Chicago O'Hare International (ORD) delay statistics
- Envoy Air on-time record
- Every Envoy Air flight number with a record
- The most and least reliable flight numbers in the US
- Why the first flight of the morning is statistically safest
A flight number here means Envoy Air’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
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.