OO4740
OO4740 (SkyWest Airlines) is a multi-stop service on 6 routes, busiest Milwaukee to Chicago. Of 657 departures recorded from October 2024 to July 2026, 75.0% left on time, according to the US BTS.
- On-time departures75.0%of 657 flights
- Average delay18.2 min
- July 202631▲ 0.0%vs July 2025
- Cancelled3.0%
- Legs flown under this number6
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 | 31 | 0.0% |
| February | 28 | 28 | 0.0% |
| March | 31 | 31 | 0.0% |
| April | 30 | 30 | 0.0% |
| May | 31 | 31 | 0.0% |
| June | 30 | 30 | 0.0% |
| July | 31 | 31 | 0.0% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 212 | 212 | 0.0% |
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 | 75.9% | 53.3% | ▼ 29.7% |
| February | 85.7% | 85.7% | 0.0% |
| March | 87.1% | 71.4% | ▼ 18.0% |
| April | 76.7% | 50.0% | ▼ 34.8% |
| May | 80.0% | 77.4% | ▼ 3.2% |
| June | 86.7% | 89.7% | ▲ 3.4% |
| July | 53.3% | 71.4% | ▲ 33.9% |
| August | 74.2% | – | – |
| September | 89.7% | – | – |
| October | 83.9% | – | in progress |
| November | 92.6% | – | – |
| December | 62.1% | – | – |
| Year-to-date average (Jan–Jul) | 77.9% | 71.3% | ▼ 8.5% |
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 | 2 | 1 | ▼ 50.0% |
| February | 0 | 0 | – |
| March | 0 | 3 | – |
| April | 0 | 2 | – |
| May | 1 | 0 | ▼ 100.0% |
| June | 0 | 1 | – |
| July | 1 | 3 | ▲ 200.0% |
| August | 0 | – | – |
| September | 1 | – | – |
| October | 0 | – | in progress |
| November | 3 | – | – |
| December | 2 | – | – |
| Year to date (Jan–Jul) | 4 | 10 | ▲ 150.0% |
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 97.0% 637
- Cancelled 3.0% 20
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
2| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| MKE ORD General Mitchell International Airport – Chicago O'Hare International Airport | 108 | 17.3 min | 74.5% | 597 |
| ORD MSN Chicago O'Hare International Airport – Dane County Regional Truax Field | 175 | 51.3 min | 71.4% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 19 | 19 | 79.0% | 0 |
| November 2024 | 30 | 30 | 60.0% | 0 |
| December 2024 | 31 | 31 | 67.7% | 0 |
| January 2025 | 31 | 29 | 75.9% | 2 |
| February 2025 | 28 | 28 | 85.7% | 0 |
| March 2025 | 31 | 31 | 87.1% | 0 |
| April 2025 | 30 | 30 | 76.7% | 0 |
| May 2025 | 31 | 30 | 80.0% | 1 |
| June 2025 | 30 | 30 | 86.7% | 0 |
| July 2025 | 31 | 30 | 53.3% | 1 |
| August 2025 | 31 | 31 | 74.2% | 0 |
| September 2025 | 30 | 29 | 89.7% | 1 |
| October 2025 | 31 | 31 | 83.9% | 0 |
| November 2025 | 30 | 27 | 92.6% | 3 |
| December 2025 | 31 | 29 | 62.1% | 2 |
| January 2026 | 31 | 30 | 53.3% | 1 |
| February 2026 | 28 | 28 | 85.7% | 0 |
| March 2026 | 31 | 28 | 71.4% | 3 |
| April 2026 | 30 | 28 | 50.0% | 2 |
| May 2026 | 31 | 31 | 77.4% | 0 |
| June 2026 | 30 | 29 | 89.7% | 1 |
| July 2026 | 31 | 28 | 71.4% | 3 |