MQ4129
MQ4129 (Envoy Air) is a multi-stop service on 2 routes, busiest Springfield to Chicago. Of 593 departures recorded from October 2024 to July 2026, 88.3% left on time, according to the US BTS.
- On-time departures88.3%of 593 flights
- Average delay13.5 min
- July 202627▲ 0.0%vs July 2025
- Cancelled1.0%
- Legs flown under this number2
Recorded departures by month
All legs under this number combined; see the leg table.
The most recent periods19 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 31 | 21 | ▼ 32.3% |
| February | 28 | 20 | ▼ 28.6% |
| March | 27 | 22 | ▼ 18.5% |
| April | 30 | 29 | ▼ 3.3% |
| May | 30 | 29 | ▼ 3.3% |
| June | 26 | 26 | 0.0% |
| July | 27 | 27 | 0.0% |
| August | 30 | – | – |
| September | 27 | – | – |
| October | 31 | – | in progress |
| November | 28 | – | – |
| December | 27 | – | – |
| Year to date (Jan–Jul) | 199 | 174 | ▼ 12.6% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods19 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 93.6% | 100.0% | ▲ 6.9% |
| February | 81.5% | 95.0% | ▲ 16.6% |
| March | 88.9% | 71.4% | ▼ 19.6% |
| April | 80.0% | 93.1% | ▲ 16.4% |
| May | 93.1% | 93.1% | 0.0% |
| June | 88.5% | 80.8% | ▼ 8.7% |
| July | 100.0% | 85.2% | ▼ 14.8% |
| August | 90.0% | – | – |
| September | 96.3% | – | – |
| October | 90.3% | – | in progress |
| November | 84.6% | – | – |
| December | 84.6% | – | – |
| Year-to-date average (Jan–Jul) | 89.4% | 88.4% | ▼ 1.1% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 1 | 0 | ▼ 100.0% |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 1 | 0 | ▼ 100.0% |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 2 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 2 | 1 | ▼ 50.0% |
according to the US BTS · October 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 99.0% 587
- Cancelled 1.0% 6
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026
Legs flown under this number
1| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SGF ORD Springfield Branson National Airport – Chicago O'Hare International Airport | 705 | 13.6 min | 88.2% | 590 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 19 | 19 | 94.7% | 0 |
| November 2024 | 29 | 29 | 93.1% | 0 |
| December 2024 | 29 | 29 | 65.5% | 0 |
| January 2025 | 31 | 31 | 93.6% | 0 |
| February 2025 | 28 | 27 | 81.5% | 1 |
| March 2025 | 27 | 27 | 88.9% | 0 |
| April 2025 | 30 | 30 | 80.0% | 0 |
| May 2025 | 30 | 29 | 93.1% | 1 |
| June 2025 | 26 | 26 | 88.5% | 0 |
| July 2025 | 27 | 27 | 100.0% | 0 |
| August 2025 | 30 | 30 | 90.0% | 0 |
| September 2025 | 27 | 27 | 96.3% | 0 |
| October 2025 | 31 | 31 | 90.3% | 0 |
| November 2025 | 28 | 26 | 84.6% | 2 |
| December 2025 | 27 | 26 | 84.6% | 1 |
| January 2026 | 21 | 21 | 100.0% | 0 |
| February 2026 | 20 | 20 | 95.0% | 0 |
| March 2026 | 22 | 21 | 71.4% | 1 |
| April 2026 | 29 | 29 | 93.1% | 0 |
| May 2026 | 29 | 29 | 93.1% | 0 |
| June 2026 | 26 | 26 | 80.8% | 0 |
| July 2026 | 27 | 27 | 85.2% | 0 |