Flight number record
MQ 3640
Envoy Air · Greensboro to Miami
- Route
- GSO → MIA
- Departs
- 07:10
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s MQ 3640, 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 3640 earns an A. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 14 points better than the national rate of 77.3%. When something does go wrong the average delay runs roughly 50 minutes. That rests on 365 flights, with a median arrival 11 minutes early.
Set against the rest of the country, MQ 3640's record is 14 points better than the US average of 77.3%. That gap is worth roughly 135 fewer late arrivals for every thousand flights.
Key figures
On time
90.8%
Arrivals under 15 minutes late, of 359 completed flights
Avg delay
48 min
Across delayed arrivals only, not all flights
Cancelled
1.10%
National rate is 1.89%
1 hour+ late
2.5%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 2026. The median arrival is 11 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 3640 flies
MQ 3640 flies GSO to MIA without a single fixed slot. Its most common scheduled departure was 07:10, used on 77 of 365 flights, with 07:02 (60 flights) and 06:45 (44 flights) next.
- Departs 07:1077 flights21.1%
- Departs 07:0260 flights16.4%
- Departs 06:4544 flights12.1%
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 07:10 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and MQ 3640 runs level with that at 90.8%. 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 3640 next to GSO to MIA
Every carrier on GSO to MIA combined arrived on time 84.5% of the time across 540 flights, so MQ 3640 is 6 points ahead of it. Across its whole network Envoy Air managed 81.0%, which this flight beats by 10 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| MQ 3640 | 365 | 90.8% | 48 min | 1.10% | A |
| All Envoy Air on GSO–MIA | 535 | 84.6% | 50 min | 2.43% | B |
| All carriers on GSO–MIA | 540 | 84.5% | 51 min | 2.41% | B |
| Envoy Air, whole network | 320,362 | 81.0% | 70 min | 2.19% | B |
Across the year
MQ 3640 quarter by quarter
MQ 3640 did not run the same all year. Its best quarter was Jul–Sep 2025 at 100.0% on time and its weakest Jan–Mar 2026 at 83.7%, a swing of 16 points on roughly 73 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 flights100.0%
- Oct–Dec 202592 flights88.0%
- Jan–Mar 202690 flights83.7%
- Apr–Jun 202691 flights96.7%
- Jul–Sep 202662 flights91.7%
Scale runs 75% to 100%.
By weekday, MQ 3640 ranged from 86.3% on Saturday to 94.2% on Friday. With about 52 flights behind each day, a spread of 8 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late MQ 3640 runs when it is late
MQ 3640 often beats the schedule: 125 of 359 completed flights, 35%, arrived 15 minutes or more early. The 33 late arrivals split 12 under half an hour, 12 between 30 and 60 minutes, and 9 an hour or more.
- 15+ min early125 flights34.8%
- Within 15 min201 flights56.0%
- 15–29 min late12 flights3.3%
- 30–59 min late12 flights3.3%
- 1–2 hours late7 flights1.9%
- 2+ hours late2 flights0.6%
Scale runs 0% to 100%.
Share of 359 completed flights by arrival against schedule.
Only 16 of 359 completed flights left 15 minutes late or more, too few to say how often the time is made up.
The worst days
Worst days for MQ 3640
The latest arrival of the period was on 3 March 2026, 2 hours 23 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 |
|---|---|---|
| 3 March 2026 | 2 hours 23 minutes | Late-arriving aircraft |
| 28 January 2026 | 2 hours 6 minutes | Carrier |
| 7 April 2026 | 1 hour 53 minutes | Extreme weather |
| 2 March 2026 | 1 hour 52 minutes | Carrier |
| 4 December 2025 | 1 hour 47 minutes | Carrier |
Delay causes
Why MQ 3640 runs late
Carrier accounts for 48% of the 1,598 delay minutes carriers reported here, and the remaining four split what is left.
- 48%Carrier
- 34%National Airspace System
- 9%Late-arriving aircraft
- 9%Extreme weather
34% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 542 minutes out of 1,598, against a national NAS share of 21%. The split is drawn from 1,598 delay minutes reported on MQ 3640.
Cancellations sit at 1.10% against a national 1.89%, which is ordinary. Diversions add another 0.55%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 2.5% land an hour or more behind schedule, against 8.3% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
The 710 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.
Every one of the 365 flights under MQ 3640 in the data flew GSO to MIA. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 365 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 3640
For a booking, MQ 3640 has one of the better records a US domestic flight can show: 90.8% on time and 1.10% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- Miami International (MIA) 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.