Flight number record
MQ 3655
Envoy Air · Columbia to Chicago
- Route
- COU → ORD
- Departs
- 06:00
- Flights
- 320
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s MQ 3655, 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 3655 earns an A+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 9 points better than the national rate of 77.3%. When something does go wrong the average delay runs close to two hours. That rests on 320 flights, with a median arrival 13 minutes early.
Set against the rest of the country, MQ 3655's record is 9 points better than the US average of 77.3%. That gap is worth roughly 90 fewer late arrivals for every thousand flights.
Key figures
On time
86.3%
Arrivals under 15 minutes late, of 315 completed flights
Avg delay
108 min
Across delayed arrivals only, not all flights
Cancelled
0.94%
National rate is 1.89%
1 hour+ late
6.0%
National rate is 8.3%
These figures cover 320 flights between September 2025 and August 2026. The median arrival is 13 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.
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Schedule
When MQ 3655 flies
MQ 3655 flies COU to ORD without a single fixed slot. Its most common scheduled departure was 06:00, used on 154 of 320 flights, with 06:24 (33 flights) next.
- Departs 06:00154 flights48.1%
- Departs 06:2433 flights10.3%
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 06:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and MQ 3655 runs 3 points worse at 86.3%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
MQ 3655 next to COU to ORD
Every carrier on COU to ORD combined arrived on time 73.7% of the time across 2,054 flights, so MQ 3655 is 13 points ahead of it. Envoy flew 1,152 flights on the same city pair under all its flight numbers, including this one, and those ran 76.9% on time. Across its whole network Envoy Air managed 81.0%, which this flight beats by 5 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| MQ 3655thin sample | 320 | 86.3% | 108 min | 0.94% | A+ |
| All Envoy Air on COU–ORD | 1,152 | 76.9% | 83 min | 2.69% | B |
| All carriers on COU–ORD | 2,054 | 73.7% | 99 min | 3.65% | C− |
| Envoy Air, whole network | 320,362 | 81.0% | 70 min | 2.19% | B |
Across the year
MQ 3655 quarter by quarter
MQ 3655 did not run the same all year. Its best quarter was Jul–Sep 2026 at 91.9% on time and its weakest Oct–Dec 2025 at 77.3%, a swing of 15 points on roughly 64 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 202530 flights83.3%
- Oct–Dec 202592 flights77.3%
- Jan–Mar 202689 flights89.8%
- Apr–Jun 202647 flights91.5%
- Jul–Sep 202662 flights91.9%
Scale runs 70% to 95%.
By weekday, MQ 3655 did best on Tuesday at 93.2% on time and worst on Sunday at 75.6%. Each day rests on about 46 flights, so a gap of 18 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late MQ 3655 runs when it is late
MQ 3655 often beats the schedule: 144 of 315 completed flights, 46%, arrived 15 minutes or more early. The 43 late arrivals split 14 under half an hour, 10 between 30 and 60 minutes, and 19 an hour or more.
- 15+ min early144 flights45.7%
- Within 15 min128 flights40.6%
- 15–29 min late14 flights4.4%
- 30–59 min late10 flights3.2%
- 1–2 hours late10 flights3.2%
- 2+ hours late9 flights2.9%
Scale runs 0% to 100%.
Share of 315 completed flights by arrival against schedule.
4 of 24 late departures made up the time and arrived on time, 17% of them. In the other direction, 23 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 ORD.
The worst days
Worst days for MQ 3655
The latest arrival of the period was on 1 September 2025, 13 hours 36 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. On three of the five worst days the largest share was filed as carrier-caused (crew, maintenance, fuelling, baggage).
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 1 September 2025 | 13 hours 36 minutes | Late-arriving aircraft |
| 19 February 2026 | 9 hours 44 minutes | Carrier |
| 2 February 2026 | 7 hours 14 minutes | Carrier |
| 9 October 2025 | 5 hours 6 minutes | Late-arriving aircraft |
| 24 May 2026 | 3 hours 56 minutes | Carrier |
Delay causes
Why MQ 3655 runs late
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 4,622 reported delay minutes.
- 36%Carrier
- 26%Late-arriving aircraft
- 23%National Airspace System
- 15%Extreme weather
- 0%Security
Extreme weather accounts for 15% 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 2.5 times the usual weather exposure. The split is drawn from 4,622 delay minutes reported on MQ 3655.
Cancellations sit at 0.94% against a national 1.89%, which is ordinary. Diversions add another 0.62%.
Connections and routes
What a delay on this flight costs
6.0% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last close to two hours, which a normal layover absorbs.
The same number turns up on two other city pairs in the data, including DFW to HSV (44) and HSV to DFW (37), but none flew often enough under MQ 3655 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to COU to ORD only.
One caution: this is a thin sample. 320 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 3655
For a booking, MQ 3655 has one of the better records a US domestic flight can show: 86.3% on time and 0.94% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- COU to ORD, every carrier and departure
- ORD to COU, the return direction
- SkyWest Airlines 5609 on the same route76.0%
- SkyWest Airlines 5869 on the same route66.3%
- 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
- Worst months to fly in the US, ranked by the data
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.