OO5528
OO5528 (SkyWest Airlines) is a multi-stop service on 3 routes, busiest Williston to Denver. Of 649 departures recorded from October 2024 to July 2026, 74.0% left on time, according to the US BTS.
- On-time departures74.0%of 649 flights
- Average delay26.4 min
- July 202630▲ 0.0%vs July 2025
- Cancelled1.2%
- Legs flown under this number3
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 | 25 | 30 | ▲ 20.0% |
| July | 30 | 30 | 0.0% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 29 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 206 | 211 | ▲ 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 | 54.8% | 69.0% | ▲ 25.8% |
| February | 64.3% | 78.6% | ▲ 22.2% |
| March | 83.9% | 71.0% | ▼ 15.4% |
| April | 80.0% | 66.7% | ▼ 16.7% |
| May | 87.1% | 77.4% | ▼ 11.1% |
| June | 58.3% | 63.3% | ▲ 8.6% |
| July | 57.1% | 66.7% | ▲ 16.7% |
| August | 67.7% | – | – |
| September | 93.3% | – | – |
| October | 90.3% | – | in progress |
| November | 89.3% | – | – |
| December | 54.8% | – | – |
| Year-to-date average (Jan–Jul) | 69.4% | 70.4% | ▲ 1.4% |
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 | 2 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 1 | 0 | ▼ 100.0% |
| July | 2 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 3 | 2 | ▼ 33.3% |
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 98.8% 641
- Cancelled 1.2% 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
2| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| XWA DEN Williston Basin International Airport – Denver International Airport | 937 | 25.5 min | 74.8% | 601 |
| TUL ORD Tulsa International Airport – Chicago O'Hare International Airport | 941 | 44.1 min | 57.1% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 90.0% | 0 |
| November 2024 | 29 | 27 | 77.8% | 2 |
| December 2024 | 31 | 31 | 87.1% | 0 |
| January 2025 | 31 | 31 | 54.8% | 0 |
| February 2025 | 28 | 28 | 64.3% | 0 |
| March 2025 | 31 | 31 | 83.9% | 0 |
| April 2025 | 30 | 30 | 80.0% | 0 |
| May 2025 | 31 | 31 | 87.1% | 0 |
| June 2025 | 25 | 24 | 58.3% | 1 |
| July 2025 | 30 | 28 | 57.1% | 2 |
| August 2025 | 31 | 31 | 67.7% | 0 |
| September 2025 | 30 | 30 | 93.3% | 0 |
| October 2025 | 31 | 31 | 90.3% | 0 |
| November 2025 | 29 | 28 | 89.3% | 1 |
| December 2025 | 31 | 31 | 54.8% | 0 |
| January 2026 | 31 | 29 | 69.0% | 2 |
| February 2026 | 28 | 28 | 78.6% | 0 |
| March 2026 | 31 | 31 | 71.0% | 0 |
| April 2026 | 30 | 30 | 66.7% | 0 |
| May 2026 | 31 | 31 | 77.4% | 0 |
| June 2026 | 30 | 30 | 63.3% | 0 |
| July 2026 | 30 | 30 | 66.7% | 0 |