MQ4250
MQ4250 (Envoy Air) is a multi-stop service on 10 routes, busiest Chicago to Tulsa. Of 509 departures recorded from October 2024 to May 2026, 80.7% left on time, according to the US BTS.
- On-time departures80.7%of 509 flights
- Average delay9.8 min
- May 202619▼ 38.7%vs May 2025
- Cancelled2.2%
- 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 periods14 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | 31 | – |
| February | – | 28 | – |
| March | – | 31 | – |
| April | 27 | 30 | ▲ 11.1% |
| May | 31 | 19 | ▼ 38.7% |
| June | 56 | – | – |
| July | 62 | – | – |
| August | 62 | – | – |
| September | 8 | – | – |
| October | 1 | – | in progress |
| November | 28 | – | – |
| December | 28 | – | – |
according to the US BTS · October 2024 → May 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 periods14 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | 69.0% | – |
| February | – | 82.1% | – |
| March | – | 75.0% | – |
| April | 100.0% | 86.2% | ▼ 13.8% |
| May | 90.3% | 100.0% | ▲ 10.7% |
| June | 72.7% | – | – |
| July | 88.3% | – | – |
| August | 75.8% | – | – |
| September | 100.0% | – | – |
| October | 100.0% | – | in progress |
| November | 65.4% | – | – |
| December | 60.7% | – | – |
according to the US BTS · October 2024 → May 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → May 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods14 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | 2 | – |
| February | – | 0 | – |
| March | – | 3 | – |
| April | 0 | 1 | – |
| May | 0 | 0 | – |
| June | 1 | – | – |
| July | 2 | – | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 2 | – | – |
| December | 0 | – | – |
according to the US BTS · October 2024 → May 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 97.8% 498
- Cancelled 2.2% 11
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → May 20, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ORD TUL Chicago O'Hare International Airport – Tulsa International Airport | 941 | 16.1 min | 72.0% | 194 |
| MIA JAX Miami International Airport – Jacksonville International Airport | 540 | -0.7 min | 96.1% | 104 |
| SDF DFW Louisville Muhammad Ali International Airport – Dallas Fort Worth International Airport | 1,178 | 10.0 min | 73.8% | 62 |
| DFW SDF Dallas Fort Worth International Airport – Louisville Muhammad Ali International Airport | 1,178 | 3.5 min | 85.3% | 62 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 90.0% | 0 |
| November 2024 | 29 | 29 | 82.8% | 0 |
| December 2024 | 18 | 18 | 77.8% | 0 |
| April 2025 | 27 | 27 | 100.0% | 0 |
| May 2025 | 31 | 31 | 90.3% | 0 |
| June 2025 | 56 | 55 | 72.7% | 1 |
| July 2025 | 62 | 60 | 88.3% | 2 |
| August 2025 | 62 | 62 | 75.8% | 0 |
| September 2025 | 8 | 8 | 100.0% | 0 |
| October 2025 | 1 | 1 | 100.0% | 0 |
| November 2025 | 28 | 26 | 65.4% | 2 |
| December 2025 | 28 | 28 | 60.7% | 0 |
| January 2026 | 31 | 29 | 69.0% | 2 |
| February 2026 | 28 | 28 | 82.1% | 0 |
| March 2026 | 31 | 28 | 75.0% | 3 |
| April 2026 | 30 | 29 | 86.2% | 1 |
| May 2026 | 19 | 19 | 100.0% | 0 |