Flight number record
MQ 4140
Envoy Air · Chicago to Avoca
- Route
- ORD → AVP
- Departs
- 20:50
- Flights
- 289
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s MQ 4140, 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 4140 sits in the middle of the pack with a C−. About seven flights in ten arrive on time by the DOT's definition, 5 points worse than the national rate of 77.3%. The late ones land about an hour behind schedule. That rests on 289 flights, with a median arrival 6 minutes early.
The national on-time rate over the same period is 77.3%, so MQ 4140 runs 5 points behind the country as a whole. Across a thousand flights that is about 48 extra late arrivals.
Key figures
On time
72.5%
Arrivals under 15 minutes late, of 276 completed flights
Avg delay
65 min
Across delayed arrivals only, not all flights
Cancelled
4.50%
National rate is 1.89%
1 hour+ late
9.8%
National rate is 8.3%
These figures cover 289 flights between September 2025 and August 2026. Beyond the headline rate, 9.8% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When MQ 4140 flies
MQ 4140 flies ORD to AVP without a single fixed slot. Its most common scheduled departure was 20:50, used on 55 of 289 flights, with 20:56 (32 flights) and 19:44 (30 flights) next.
- Departs 20:5055 flights19.0%
- Departs 20:5632 flights11.1%
- Departs 19:4430 flights10.4%
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 20:50 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and MQ 4140 runs 2 points better at 72.5%. 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 4140 next to ORD to AVP
Every carrier on ORD to AVP combined arrived on time 72.3% of the time across 846 flights, so MQ 4140 is about level with it. Envoy flew 666 flights on the same city pair under all its flight numbers, including this one, and those ran 74.8% on time. Across its whole network Envoy Air managed 81.0%, which this flight trails by 9 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| MQ 4140thin sample | 289 | 72.5% | 65 min | 4.50% | C− |
| All Envoy Air on ORD–AVP | 666 | 74.8% | 65 min | 2.70% | C |
| All carriers on ORD–AVP | 846 | 72.3% | 71 min | 2.36% | C |
| Envoy Air, whole network | 320,362 | 81.0% | 70 min | 2.19% | B |
Across the year
MQ 4140 quarter by quarter
MQ 4140 did not run the same all year. Its best quarter was Apr–Jun 2026 at 83.7% on time and its weakest Jan–Mar 2026 at 61.9%, a swing of 22 points on roughly 72 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 202527 flights—
- Oct–Dec 202587 flights71.1%
- Jan–Mar 202666 flights61.9%
- Apr–Jun 202647 flights83.7%
- Jul–Sep 202662 flights71.7%
Scale runs 55% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, MQ 4140 did best on Friday at 86.8% on time and worst on Wednesday at 65.8%. Each day rests on about 41 flights, so a gap of 21 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late MQ 4140 runs when it is late
MQ 4140 often beats the schedule: 90 of 276 completed flights, 33%, arrived 15 minutes or more early. The 76 late arrivals split 23 under half an hour, 26 between 30 and 60 minutes, and 27 an hour or more.
- 15+ min early90 flights32.6%
- Within 15 min110 flights39.9%
- 15–29 min late23 flights8.3%
- 30–59 min late26 flights9.4%
- 1–2 hours late14 flights5.1%
- 2+ hours late13 flights4.7%
Scale runs 0% to 100%.
Share of 276 completed flights by arrival against schedule.
21 of 85 late departures made up the time and arrived on time, 25% of them. 12 flights left on time and still arrived late.
The worst days
Worst days for MQ 4140
The latest arrival of the period was on 19 January 2026, 4 hours 15 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across January, March, February and June, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 19 January 2026 | 4 hours 15 minutes | Carrier |
| 10 March 2026 | 3 hours 56 minutes | Extreme weather |
| 2 February 2026 | 3 hours 23 minutes | Carrier |
| 24 June 2026 | 2 hours 47 minutes | Extreme weather |
| 21 January 2026 | 2 hours 40 minutes | National Airspace System |
Delay causes
Why MQ 4140 runs late
Late-arriving aircraft accounts for 55% of the 4,960 delay minutes carriers reported here, and the remaining four split what is left.
- 55%Late-arriving aircraft
- 18%Carrier
- 14%Extreme weather
- 13%National Airspace System
Extreme weather accounts for 14% 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 quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.3 times the usual weather exposure. The split is drawn from 4,960 delay minutes reported on MQ 4140.
Cancellations run at 4.50%, against 1.89% nationally. That is roughly one flight in twenty 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
9.8% 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 632 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.
The same number turns up on two other city pairs in the data, including DFW to MOB (44) and MOB to DFW (44), but none flew often enough under MQ 4140 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to ORD to AVP only.
One caution: this is a thin sample. 289 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 4140
For a booking, the cancellation rate is the figure to plan around on MQ 4140: 4.50% of its 289 scheduled flights did not operate. A late arrival costs about an hour, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- ORD to AVP, every carrier and departure
- AVP to ORD, the return direction
- 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.