OO4781
OO4781 (SkyWest Airlines) is a multi-stop service on 22 routes, busiest Harrisburg to Chicago. Of 575 departures recorded from October 2024 to July 2026, 84.3% left on time, according to the US BTS.
- On-time departures84.3%of 575 flights
- Average delay9.7 min
- July 202631▲ 0.0%vs July 2025
- Cancelled1.6%
- Legs flown under this number22
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 | 27 | 30 | ▲ 11.1% |
| February | 26 | 28 | ▲ 7.7% |
| March | 31 | 31 | 0.0% |
| April | 30 | 22 | ▼ 26.7% |
| May | 31 | 31 | 0.0% |
| June | 30 | 30 | 0.0% |
| July | 31 | 31 | 0.0% |
| August | 31 | – | – |
| September | 25 | – | – |
| October | 8 | – | in progress |
| November | 26 | – | – |
| December | 29 | – | – |
| Year to date (Jan–Jul) | 206 | 203 | ▼ 1.5% |
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 | 92.6% | 86.2% | ▼ 6.9% |
| February | 88.5% | 67.9% | ▼ 23.3% |
| March | 80.7% | 62.1% | ▼ 23.0% |
| April | 93.1% | 95.5% | ▲ 2.5% |
| May | 87.1% | 86.7% | ▼ 0.5% |
| June | 96.7% | 82.1% | ▼ 15.0% |
| July | 100.0% | 60.0% | ▼ 40.0% |
| August | 100.0% | – | – |
| September | 100.0% | – | – |
| October | 100.0% | – | in progress |
| November | 88.5% | – | – |
| December | 60.7% | – | – |
| Year-to-date average (Jan–Jul) | 91.2% | 77.2% | ▼ 15.4% |
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 | 1 | – |
| February | 0 | 0 | – |
| March | 0 | 2 | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 0 | 1 | – |
| June | 0 | 2 | – |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 1 | 7 | ▲ 600.0% |
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 98.4% 566
- Cancelled 1.6% 9
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
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| MDT ORD Harrisburg International Airport – Chicago O'Hare International Airport | 954 | 14.6 min | 79.2% | 154 |
| PDX SFO Portland International Airport – San Francisco International Airport | 886 | -4.6 min | 98.3% | 119 |
| AUS LAX Austin Bergstrom International Airport – Los Angeles International Airport | 1,995 | 9.3 min | 83.3% | 84 |
| ORD CID Chicago O'Hare International Airport – The Eastern Iowa Airport | 315 | 27.4 min | 62.2% | 38 |
| CRP IAH Corpus Christi International Airport – George Bush Intercontinental Airport | 324 | -2.8 min | 90.9% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 16 | 16 | 81.3% | 0 |
| November 2024 | 1 | 1 | 100.0% | 0 |
| December 2024 | 30 | 30 | 73.3% | 0 |
| January 2025 | 27 | 27 | 92.6% | 0 |
| February 2025 | 26 | 26 | 88.5% | 0 |
| March 2025 | 31 | 31 | 80.7% | 0 |
| April 2025 | 30 | 29 | 93.1% | 1 |
| May 2025 | 31 | 31 | 87.1% | 0 |
| June 2025 | 30 | 30 | 96.7% | 0 |
| July 2025 | 31 | 31 | 100.0% | 0 |
| August 2025 | 31 | 31 | 100.0% | 0 |
| September 2025 | 25 | 25 | 100.0% | 0 |
| October 2025 | 8 | 8 | 100.0% | 0 |
| November 2025 | 26 | 26 | 88.5% | 0 |
| December 2025 | 29 | 28 | 60.7% | 1 |
| January 2026 | 30 | 29 | 86.2% | 1 |
| February 2026 | 28 | 28 | 67.9% | 0 |
| March 2026 | 31 | 29 | 62.1% | 2 |
| April 2026 | 22 | 22 | 95.5% | 0 |
| May 2026 | 31 | 30 | 86.7% | 1 |
| June 2026 | 30 | 28 | 82.1% | 2 |
| July 2026 | 31 | 30 | 60.0% | 1 |