OO5021
OO5021 (SkyWest Airlines) is a multi-stop service on 7 routes, busiest Chicago to Sioux City. Of 706 departures recorded from October 2024 to July 2026, 70.6% left on time, according to the US BTS.
- On-time departures70.6%of 706 flights
- Average delay30.0 min
- July 202649▲ 58.1%vs July 2025
- Cancelled3.7%
- 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 | 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 | 30 | 43 | ▲ 43.3% |
| July | 31 | 49 | ▲ 58.1% |
| August | 43 | – | – |
| September | 37 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 29 | – | – |
| Year to date (Jan–Jul) | 212 | 243 | ▲ 14.6% |
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 | 63.3% | 71.0% | ▲ 12.1% |
| February | 67.9% | 71.4% | ▲ 5.3% |
| March | 56.7% | 86.2% | ▲ 52.1% |
| April | 93.1% | 75.9% | ▼ 18.5% |
| May | 71.0% | 74.2% | ▲ 4.5% |
| June | 40.0% | 65.9% | ▲ 64.6% |
| July | 48.3% | 66.7% | ▲ 38.1% |
| August | 68.3% | – | – |
| September | 83.8% | – | – |
| October | 90.3% | – | in progress |
| November | 73.1% | – | – |
| December | 61.5% | – | – |
| Year-to-date average (Jan–Jul) | 62.9% | 73.0% | ▲ 16.1% |
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 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 1 | 2 | ▲ 100.0% |
| April | 1 | 1 | 0.0% |
| May | 0 | 0 | – |
| June | 0 | 2 | – |
| July | 2 | 4 | ▲ 100.0% |
| August | 2 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 4 | – | – |
| December | 3 | – | – |
| Year to date (Jan–Jul) | 5 | 9 | ▲ 80.0% |
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 96.3% 680
- Cancelled 3.7% 26
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 |
|---|---|---|---|---|
| ORD SUX Chicago O'Hare International Airport – Sioux Gateway Airport / Brigadier General Bud Day Field | 700 | 37.1 min | 68.4% | 494 |
| DEN COD Denver International Airport – Yellowstone Regional Airport | 630 | 7.3 min | 83.8% | 68 |
| SUX ORD Sioux Gateway Airport / Brigadier General Bud Day Field – Chicago O'Hare International Airport | 700 | 7.6 min | 83.0% | 56 |
| ORD SLN Chicago O'Hare International Airport – Salina Municipal Airport | 898 | 34.1 min | 61.1% | 37 |
| SUX DEN Sioux Gateway Airport / Brigadier General Bud Day Field – Denver International Airport | 749 | 26.0 min | 55.2% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 85.0% | 0 |
| November 2024 | 30 | 30 | 76.7% | 0 |
| December 2024 | 31 | 28 | 67.9% | 3 |
| January 2025 | 31 | 30 | 63.3% | 1 |
| February 2025 | 28 | 28 | 67.9% | 0 |
| March 2025 | 31 | 30 | 56.7% | 1 |
| April 2025 | 30 | 29 | 93.1% | 1 |
| May 2025 | 31 | 31 | 71.0% | 0 |
| June 2025 | 30 | 30 | 40.0% | 0 |
| July 2025 | 31 | 29 | 48.3% | 2 |
| August 2025 | 43 | 41 | 68.3% | 2 |
| September 2025 | 37 | 37 | 83.8% | 0 |
| October 2025 | 31 | 31 | 90.3% | 0 |
| November 2025 | 30 | 26 | 73.1% | 4 |
| December 2025 | 29 | 26 | 61.5% | 3 |
| January 2026 | 31 | 31 | 71.0% | 0 |
| February 2026 | 28 | 28 | 71.4% | 0 |
| March 2026 | 31 | 29 | 86.2% | 2 |
| April 2026 | 30 | 29 | 75.9% | 1 |
| May 2026 | 31 | 31 | 74.2% | 0 |
| June 2026 | 43 | 41 | 65.9% | 2 |
| July 2026 | 49 | 45 | 66.7% | 4 |