Flight number record

MQ 3924

Envoy Air · Champaign to Dallas-Fort Worth

Route: CMI → DFW
Departs: 14:54
Flights: 279
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s MQ 3924, 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 3924 lands a B, 6 points better than the national rate of 77.6%. About one flight in six arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That is a workable record, not a spotless one. That rests on 279 flights, with a median arrival 18 minutes early.

Set against the rest of the country, MQ 3924's record is 6 points better than the US average of 77.6%. That gap is worth roughly 63 fewer late arrivals for every thousand flights.

On time

83.9%

Arrivals under 15 minutes late, of 274 completed flights

Avg delay

81 min

Across delayed arrivals only, not all flights

Cancelled

1.43%

National rate is 1.81%

1 hour+ late

6.6%

National rate is 8.1%

These figures cover 279 flights between July 2025 and June 2026. The median arrival is 18 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.

Schedule

When MQ 3924 flies

MQ 3924 flies CMI to DFW without a single fixed slot. Its most common scheduled departure was 14:54, used on 54 of 279 flights, with 15:45 (37 flights) and 15:32 (33 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 14:5454 flights19.4%
Departs 15:4537 flights13.3%
Departs 15:3233 flights11.8%

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 14:54 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and MQ 3924 runs 12 points better at 83.9%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

MQ 3924 next to CMI to DFW

Every carrier on CMI to DFW combined arrived on time 86.1% of the time across 723 flights, so MQ 3924 is 2 points behind it. Across its whole network Envoy Air managed 80.2%, which this flight beats by 4 points.

MQ 3924 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
MQ 3924thin sample	279	83.9%	81 min	1.43%	B
All Envoy Air on CMI–DFW	723	86.1%	101 min	2.07%	A
All carriers on CMI–DFW	723	86.1%	101 min	2.07%	A
Envoy Air, whole network	315,435	80.2%	67 min	2.30%	B

Across the year

MQ 3924 quarter by quarter

MQ 3924 did not run the same all year. Its best quarter was Jan–Mar 2026 at 88.8% on time and its weakest Oct–Dec 2025 at 78.7%, a swing of 10 points on roughly 93 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 202592 flights84.4%
Oct–Dec 202591 flights78.7%
Jan–Mar 202690 flights88.8%
Apr–Jun 20266 flights—

Scale runs 70% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, MQ 3924 did best on Tuesday at 90.0% on time and worst on Sunday at 77.5%. Each day rests on about 40 flights, so a gap of 13 points is worth noticing but could still narrow in another year.

Delay causes

Why MQ 3924 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 57% of the 3,549 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
57%
National Airspace System
24%
Carrier
14%
Extreme weather
6%

57% 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 3,549 reported delay minutes here, that single category outweighs weather by 10 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 3,549 delay minutes reported on MQ 3924.

Cancellations sit at 1.43% against a national 1.81%, which is ordinary. Diversions add another 0.36%.

Connections and routes

What a delay on this flight costs

6.6% 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 a little over an hour, which a normal layover absorbs.

The 692 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.

The same number turns up on three other city pairs in the data, including DFW to CMI (183), MSO to DFW (37) and ORD to MSN (29), but none flew often enough under MQ 3924 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to CMI to DFW only.

One caution: this is a thin sample. 279 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 3924

For a booking, read MQ 3924 as 83.9% on time with 1.43% cancelled over 279 flights. Those are rates from the past twelve months, not a forecast for any particular day.

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