OO5538
OO5538 (SkyWest Airlines) is a multi-stop service on 11 routes, busiest Chicago to Huntsville. Of 554 departures recorded from October 2024 to July 2026, 76.3% left on time, according to the US BTS.
- On-time departures76.3%of 554 flights
- Average delay22.7 min
- July 20265▼ 83.9%vs July 2025
- Cancelled2.4%
- Legs flown under this number11
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 | 26 | ▼ 7.1% |
| March | 31 | 31 | 0.0% |
| April | 30 | 26 | ▼ 13.3% |
| May | 31 | 26 | ▼ 16.1% |
| June | 29 | 2 | ▼ 93.1% |
| July | 31 | 5 | ▼ 83.9% |
| August | 31 | – | – |
| September | 22 | – | – |
| October | 7 | – | in progress |
| November | 26 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 211 | 147 | ▼ 30.3% |
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 | 74.2% | 78.6% | ▲ 5.9% |
| February | 66.7% | 80.8% | ▲ 21.1% |
| March | 64.5% | 67.9% | ▲ 5.2% |
| April | 69.0% | 76.0% | ▲ 10.2% |
| May | 74.2% | 80.8% | ▲ 8.9% |
| June | 93.1% | 100.0% | ▲ 7.4% |
| July | 90.3% | 100.0% | ▲ 10.7% |
| August | 69.0% | – | – |
| September | 68.2% | – | – |
| October | 100.0% | – | in progress |
| November | 80.0% | – | – |
| December | 77.4% | – | – |
| Year-to-date average (Jan–Jul) | 76.0% | 83.4% | ▲ 9.8% |
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 | 0 | 3 | – |
| February | 1 | 0 | ▼ 100.0% |
| March | 0 | 3 | – |
| April | 1 | 1 | 0.0% |
| May | 0 | 0 | – |
| June | 0 | 1 | – |
| July | 0 | 0 | – |
| August | 2 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 8 | ▲ 300.0% |
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 97.7% 541
- Cancelled 2.3% 13
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
3| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ORD HSV Chicago O'Hare International Airport – Huntsville International Airport | 822 | 25.9 min | 73.8% | 356 |
| ORD CLT Chicago O'Hare International Airport – Charlotte Douglas International Airport | 965 | 11.6 min | 79.3% | 56 |
| LEX ORD Blue Grass Airport – Chicago O'Hare International Airport | 521 | -1.1 min | 91.7% | 36 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 19 | 19 | 84.2% | 0 |
| November 2024 | 29 | 29 | 75.9% | 0 |
| December 2024 | 31 | 31 | 71.0% | 0 |
| January 2025 | 31 | 31 | 74.2% | 0 |
| February 2025 | 28 | 27 | 66.7% | 1 |
| March 2025 | 31 | 31 | 64.5% | 0 |
| April 2025 | 30 | 29 | 69.0% | 1 |
| May 2025 | 31 | 31 | 74.2% | 0 |
| June 2025 | 29 | 29 | 93.1% | 0 |
| July 2025 | 31 | 31 | 90.3% | 0 |
| August 2025 | 31 | 29 | 69.0% | 2 |
| September 2025 | 22 | 22 | 68.2% | 0 |
| October 2025 | 7 | 7 | 100.0% | 0 |
| November 2025 | 26 | 25 | 80.0% | 1 |
| December 2025 | 31 | 31 | 77.4% | 0 |
| January 2026 | 31 | 28 | 78.6% | 3 |
| February 2026 | 26 | 26 | 80.8% | 0 |
| March 2026 | 31 | 28 | 67.9% | 3 |
| April 2026 | 26 | 25 | 76.0% | 1 |
| May 2026 | 26 | 26 | 80.8% | 0 |
| June 2026 | 2 | 1 | 100.0% | 1 |
| July 2026 | 5 | 5 | 100.0% | 0 |