MQ4221
MQ4221 (Envoy Air) is a multi-stop service on 13 routes, busiest Chicago to Indianapolis. Of 329 departures recorded from March 2025 to May 2026, 83.8% left on time, according to the US BTS.
- On-time departures83.8%of 329 flights
- Average delay7.5 min
- May 202640▲ 17.6%vs May 2025
- Cancelled0.6%
- Legs flown under this number13
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods13 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | 16 | – |
| March | 10 | 31 | ▲ 210.0% |
| April | 55 | 54 | ▼ 1.8% |
| May | 34 | 40 | ▲ 17.6% |
| June | 4 | – | – |
| July | 27 | – | – |
| August | 5 | – | – |
| September | 22 | – | – |
| October | 30 | – | in progress |
| November | 1 | – | – |
| December | – | – | – |
according to the US BTS · March 2025 → 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 periods13 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | 87.5% | – |
| March | 80.0% | 83.9% | ▲ 4.8% |
| April | 98.2% | 79.3% | ▼ 19.3% |
| May | 85.3% | 82.5% | ▼ 3.3% |
| June | 75.0% | – | – |
| July | 63.0% | – | – |
| August | 100.0% | – | – |
| September | 86.4% | – | – |
| October | 80.0% | – | in progress |
| November | 100.0% | – | – |
| December | – | – | – |
according to the US BTS · March 2025 → May 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · March 2025 → May 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods13 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | 0 | – |
| March | 0 | 0 | – |
| April | 1 | 1 | 0.0% |
| May | 0 | 0 | – |
| June | 0 | – | – |
| July | 0 | – | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | – | – | – |
according to the US BTS · March 2025 → 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 99.4% 327
- Cancelled 0.6% 2
Share of all recorded flights in the period, all legs. · Mar 8, 2025 → May 20, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
7| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ORD IND Chicago O'Hare International Airport – Indianapolis International Airport | 286 | 6.4 min | 82.0% | 62 |
| TUL ORD Tulsa International Airport – Chicago O'Hare International Airport | 941 | 16.2 min | 83.0% | 53 |
| ORD OMA Chicago O'Hare International Airport – Eppley Airfield | 668 | 10.2 min | 81.8% | 44 |
| OMA ORD Eppley Airfield – Chicago O'Hare International Airport | 668 | 9.4 min | 81.4% | 44 |
| MIA TPA Miami International Airport – Tampa International Airport | 329 | 11.0 min | 68.8% | 32 |
| SBP PHX San Luis County Regional Airport – Phoenix Sky Harbor International Airport | 818 | -4.8 min | 96.7% | 30 |
| PHX SBP Phoenix Sky Harbor International Airport – San Luis County Regional Airport | 818 | -1.6 min | 93.3% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| March 2025 | 10 | 10 | 80.0% | 0 |
| April 2025 | 55 | 54 | 98.2% | 1 |
| May 2025 | 34 | 34 | 85.3% | 0 |
| June 2025 | 4 | 4 | 75.0% | 0 |
| July 2025 | 27 | 27 | 63.0% | 0 |
| August 2025 | 5 | 5 | 100.0% | 0 |
| September 2025 | 22 | 22 | 86.4% | 0 |
| October 2025 | 30 | 30 | 80.0% | 0 |
| November 2025 | 1 | 1 | 100.0% | 0 |
| February 2026 | 16 | 16 | 87.5% | 0 |
| March 2026 | 31 | 31 | 83.9% | 0 |
| April 2026 | 54 | 53 | 79.3% | 1 |
| May 2026 | 40 | 40 | 82.5% | 0 |