MQ4051
MQ4051 (Envoy Air) is a multi-stop service on 10 routes, busiest Key West to Miami. Of 608 departures recorded from November 2024 to July 2026, 78.7% left on time, according to the US BTS.
- On-time departures78.7%of 608 flights
- Average delay8.9 min
- July 202622▼ 64.5%vs July 2025
- Cancelled1.8%
- Legs flown under this number10
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods16 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 30 | 52 | ▲ 73.3% |
| February | 23 | 20 | ▼ 13.0% |
| March | 26 | – | – |
| April | 30 | 24 | ▼ 20.0% |
| May | 31 | 27 | ▼ 12.9% |
| June | 56 | 22 | ▼ 60.7% |
| July | 62 | 22 | ▼ 64.5% |
| August | 14 | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 48 | – | – |
| December | 34 | – | – |
according to the US BTS · November 2024 → July 2026
On-time departures by month
Months without data are left blank.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods16 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 83.3% | 75.0% | ▼ 10.0% |
| February | 87.0% | 70.0% | ▼ 19.5% |
| March | 69.2% | – | – |
| April | 82.8% | 83.3% | ▲ 0.7% |
| May | 77.4% | 76.9% | ▼ 0.6% |
| June | 78.2% | 55.6% | ▼ 28.9% |
| July | 79.0% | 68.4% | ▼ 13.4% |
| August | 78.6% | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 85.4% | – | – |
| December | 76.5% | – | – |
according to the US BTS · November 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · November 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods16 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | – | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 0 | 1 | – |
| June | 1 | 4 | ▲ 300.0% |
| July | 0 | 3 | – |
| August | 0 | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
according to the US BTS · November 2024 → July 2026
This is a historical record of departures already flown, not a forecast for your flight.
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 98.2% 597
- Cancelled 1.8% 11
Share of all recorded flights in the period, all legs. · Nov 5, 2024 → Jul 30, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
6| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| EYW MIA Key West International Airport – Miami International Airport | 202 | 8.9 min | 75.2% | 248 |
| MIA EYW Miami International Airport – Key West International Airport | 202 | 1.4 min | 89.0% | 137 |
| ORD OMA Chicago O'Hare International Airport – Eppley Airfield | 668 | 8.5 min | 80.7% | 62 |
| OMA ORD Eppley Airfield – Chicago O'Hare International Airport | 668 | 11.1 min | 79.0% | 62 |
| DCA BOS Ronald Reagan Washington National Airport – Boston Logan International Airport | 641 | 19.4 min | 60.5% | 51 |
| PWM ORD Portland International Jetport – Chicago O'Hare International Airport | 1,444 | 6.5 min | 84.1% | 44 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| November 2024 | 44 | 44 | 86.4% | 0 |
| December 2024 | 43 | 42 | 83.3% | 1 |
| January 2025 | 30 | 30 | 83.3% | 0 |
| February 2025 | 23 | 23 | 87.0% | 0 |
| March 2025 | 26 | 26 | 69.2% | 0 |
| April 2025 | 30 | 29 | 82.8% | 1 |
| May 2025 | 31 | 31 | 77.4% | 0 |
| June 2025 | 56 | 55 | 78.2% | 1 |
| July 2025 | 62 | 62 | 79.0% | 0 |
| August 2025 | 14 | 14 | 78.6% | 0 |
| November 2025 | 48 | 48 | 85.4% | 0 |
| December 2025 | 34 | 34 | 76.5% | 0 |
| January 2026 | 52 | 52 | 75.0% | 0 |
| February 2026 | 20 | 20 | 70.0% | 0 |
| April 2026 | 24 | 24 | 83.3% | 0 |
| May 2026 | 27 | 26 | 76.9% | 1 |
| June 2026 | 22 | 18 | 55.6% | 4 |
| July 2026 | 22 | 19 | 68.4% | 3 |