Flight number record

MQ 3745

Envoy Air · Chicago to Columbia

Route: ORD → COU
Departs: 18:50
Flights: 302
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 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 77.6%, so MQ 3745 runs 11 points behind the country as a whole. Across a thousand flights that is about 105 extra late arrivals.

On time

67.1%

Arrivals under 15 minutes late, of 292 completed flights

Avg delay

73 min

Across delayed arrivals only, not all flights

Cancelled

3.31%

National rate is 1.81%

1 hour+ late

14.4%

National rate is 8.1%

These figures cover 302 flights between July 2025 and June 2026. Beyond the headline rate, 14.4% 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.

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. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 18:5047 flights15.6%
Departs 19:4036 flights11.9%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

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 68.2%, and MQ 3745 runs level with that at 67.1%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

MQ 3745 next to ORD to COU

Every carrier on ORD to COU combined arrived on time 70.4% of the time across 1,903 flights, so MQ 3745 is 3 points behind it. Envoy flew 1,124 flights on the same city pair under all its flight numbers, including this one, and those ran 73.6% on time. Across its whole network Envoy Air managed 80.2%, which this flight trails by 13 points.

MQ 3745 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
MQ 3745thin sample	302	67.1%	73 min	3.31%	C−
All Envoy Air on ORD–COU	1,124	73.6%	65 min	2.58%	C
All carriers on ORD–COU	1,903	70.4%	82 min	3.52%	C−
Envoy Air, whole network	315,435	80.2%	67 min	2.30%	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 202546 flights67.4%
Oct–Dec 202575 flights60.3%
Jan–Mar 202690 flights62.1%
Apr–Jun 202691 flights77.9%

Scale runs 50% to 85%. Rows with fewer than 30 flights show a dash.

By weekday, MQ 3745 did best on Saturday at 78.0% on time and worst on Thursday at 56.8%. Each day rests on about 43 flights, so a gap of 21 points is worth noticing but could still narrow in another year.

Delay causes

Why MQ 3745 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 55% of the 7,014 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.

Late-arriving aircraft
55%
National Airspace System
20%
Carrier
15%
Extreme weather
11%

55% 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 7,014 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 7,014 delay minutes reported on MQ 3745.

Cancellations run at 3.31%, against 1.81% nationally. That is about one flight in 30 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

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 14.4% 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.

The same number turns up on one other city pair in the data, including RST to ORD (28), 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: 3.31% 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.

Where to go next

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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures