OO5581
OO5581 (SkyWest Airlines) is a multi-stop service on 14 routes, busiest Chicago to Harrisburg. Of 595 departures recorded from October 2024 to July 2026, 80.4% left on time, according to the US BTS.
- On-time departures80.4%of 595 flights
- Average delay17.9 min
- July 202631▲ 3.3%vs July 2025
- Cancelled1.3%
- Legs flown under this number14
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 | 23 | ▼ 25.8% |
| February | 28 | 24 | ▼ 14.3% |
| March | 31 | 27 | ▼ 12.9% |
| April | 30 | 1 | ▼ 96.7% |
| May | 30 | 23 | ▼ 23.3% |
| June | 30 | 24 | ▼ 20.0% |
| July | 30 | 31 | ▲ 3.3% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 29 | – | – |
| December | 30 | – | – |
| Year to date (Jan–Jul) | 210 | 153 | ▼ 27.1% |
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 | 70.0% | 77.3% | ▲ 10.4% |
| February | 66.7% | 79.2% | ▲ 18.7% |
| March | 87.1% | 80.8% | ▼ 7.3% |
| April | 100.0% | 0.0% | ▼ 100.0% |
| May | 93.3% | 90.9% | ▼ 2.6% |
| June | 80.0% | 87.5% | ▲ 9.4% |
| July | 62.1% | 77.4% | ▲ 24.7% |
| August | 80.7% | – | – |
| September | 90.0% | – | – |
| October | 77.4% | – | in progress |
| November | 96.6% | – | – |
| December | 44.8% | – | – |
| Year-to-date average (Jan–Jul) | 79.9% | 70.4% | ▼ 11.8% |
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 | 1 | 0.0% |
| February | 1 | 0 | ▼ 100.0% |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 1 | – |
| June | 0 | 0 | – |
| July | 1 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 3 | 3 | 0.0% |
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 98.7% 587
- Cancelled 1.3% 8
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
6| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ORD MDT Chicago O'Hare International Airport – Harrisburg International Airport | 954 | 3.2 min | 89.4% | 154 |
| ORD FWA Chicago O'Hare International Airport – Fort Wayne International Airport | 252 | 13.8 min | 77.5% | 145 |
| ORD SGF Chicago O'Hare International Airport – Springfield Branson National Airport | 705 | 12.7 min | 83.8% | 68 |
| CID ORD The Eastern Iowa Airport – Chicago O'Hare International Airport | 315 | 49.4 min | 69.2% | 53 |
| LAX AUS Los Angeles International Airport – Austin Bergstrom International Airport | 1,995 | 4.9 min | 91.7% | 36 |
| ORD MKE Chicago O'Hare International Airport – General Mitchell International Airport | 108 | 10.7 min | 77.4% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 100.0% | 0 |
| November 2024 | 30 | 29 | 93.1% | 1 |
| December 2024 | 31 | 31 | 64.5% | 0 |
| January 2025 | 31 | 30 | 70.0% | 1 |
| February 2025 | 28 | 27 | 66.7% | 1 |
| March 2025 | 31 | 31 | 87.1% | 0 |
| April 2025 | 30 | 30 | 100.0% | 0 |
| May 2025 | 30 | 30 | 93.3% | 0 |
| June 2025 | 30 | 30 | 80.0% | 0 |
| July 2025 | 30 | 29 | 62.1% | 1 |
| August 2025 | 31 | 31 | 80.7% | 0 |
| September 2025 | 30 | 30 | 90.0% | 0 |
| October 2025 | 31 | 31 | 77.4% | 0 |
| November 2025 | 29 | 29 | 96.6% | 0 |
| December 2025 | 30 | 29 | 44.8% | 1 |
| January 2026 | 23 | 22 | 77.3% | 1 |
| February 2026 | 24 | 24 | 79.2% | 0 |
| March 2026 | 27 | 26 | 80.8% | 1 |
| April 2026 | 1 | 1 | 0.0% | 0 |
| May 2026 | 23 | 22 | 90.9% | 1 |
| June 2026 | 24 | 24 | 87.5% | 0 |
| July 2026 | 31 | 31 | 77.4% | 0 |