OO4644
OO4644 (SkyWest Airlines) is a multi-stop service on 7 routes, busiest Charleston to Chicago. Of 646 departures recorded from October 2024 to July 2026, 63.3% left on time, according to the US BTS.
- On-time departures63.3%of 646 flights
- Average delay40.8 min
- July 202631▲ 0.0%vs July 2025
- Cancelled3.9%
- Legs flown under this number7
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 | 28 | 31 | ▲ 10.7% |
| February | 28 | 28 | 0.0% |
| March | 29 | 31 | ▲ 6.9% |
| 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) | 207 | 212 | ▲ 2.4% |
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 | 63.0% | 62.1% | ▼ 1.4% |
| February | 63.0% | 67.9% | ▲ 7.8% |
| March | 82.8% | 51.9% | ▼ 37.3% |
| April | 82.8% | 80.8% | ▼ 2.4% |
| May | 71.0% | 63.3% | ▼ 10.8% |
| June | 70.0% | 50.0% | ▼ 28.6% |
| July | 38.7% | 42.9% | ▲ 10.7% |
| August | 72.4% | – | – |
| September | 86.7% | – | – |
| October | 64.5% | – | in progress |
| November | 59.3% | – | – |
| December | 53.3% | – | – |
| Year-to-date average (Jan–Jul) | 67.3% | 59.8% | ▼ 11.1% |
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 | 1 | 2 | ▲ 100.0% |
| February | 1 | 0 | ▼ 100.0% |
| March | 0 | 4 | – |
| April | 1 | 4 | ▲ 300.0% |
| May | 0 | 1 | – |
| June | 0 | 2 | – |
| July | 0 | 3 | – |
| August | 2 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 3 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 3 | 16 | ▲ 433.3% |
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 96.1% 621
- Cancelled 3.9% 25
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 |
|---|---|---|---|---|
| CRW ORD Yeager Airport – Chicago O'Hare International Airport | 669 | 43.0 min | 60.1% | 570 |
| ATW ORD Appleton International Airport – Chicago O'Hare International Airport | 258 | 51.9 min | 78.6% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 60.0% | 0 |
| November 2024 | 30 | 30 | 56.7% | 0 |
| December 2024 | 24 | 24 | 45.8% | 0 |
| January 2025 | 28 | 27 | 63.0% | 1 |
| February 2025 | 28 | 27 | 63.0% | 1 |
| March 2025 | 29 | 29 | 82.8% | 0 |
| April 2025 | 30 | 29 | 82.8% | 1 |
| May 2025 | 31 | 31 | 71.0% | 0 |
| June 2025 | 30 | 30 | 70.0% | 0 |
| July 2025 | 31 | 31 | 38.7% | 0 |
| August 2025 | 31 | 29 | 72.4% | 2 |
| September 2025 | 30 | 30 | 86.7% | 0 |
| October 2025 | 31 | 31 | 64.5% | 0 |
| November 2025 | 30 | 27 | 59.3% | 3 |
| December 2025 | 31 | 30 | 53.3% | 1 |
| January 2026 | 31 | 29 | 62.1% | 2 |
| February 2026 | 28 | 28 | 67.9% | 0 |
| March 2026 | 31 | 27 | 51.9% | 4 |
| April 2026 | 30 | 26 | 80.8% | 4 |
| May 2026 | 31 | 30 | 63.3% | 1 |
| June 2026 | 30 | 28 | 50.0% | 2 |
| July 2026 | 31 | 28 | 42.9% | 3 |