OO5555
OO5555 (SkyWest Airlines) is a multi-stop service on 2 routes, busiest Chicago to Milwaukee. Of 656 departures recorded from October 2024 to July 2026, 67.2% left on time, according to the US BTS.
- On-time departures67.2%of 656 flights
- Average delay34.1 min
- July 202631▲ 0.0%vs July 2025
- Cancelled2.7%
- Legs flown under this number2
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 | 30 | 0.0% |
| July | 31 | 31 | 0.0% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 29 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 212 | 212 | 0.0% |
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% | 48.4% | ▼ 34.8% |
| February | 71.4% | 64.3% | ▼ 10.0% |
| March | 71.0% | 70.4% | ▼ 0.8% |
| April | 79.3% | 53.9% | ▼ 32.1% |
| May | 83.9% | 71.0% | ▼ 15.4% |
| June | 53.3% | 60.7% | ▲ 13.8% |
| July | 50.0% | 75.9% | ▲ 51.7% |
| August | 69.0% | – | – |
| September | 66.7% | – | – |
| October | 74.2% | – | in progress |
| November | 59.3% | – | – |
| December | 48.4% | – | – |
| Year-to-date average (Jan–Jul) | 69.0% | 63.5% | ▼ 8.0% |
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 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 4 | – |
| April | 1 | 4 | ▲ 300.0% |
| May | 0 | 0 | – |
| June | 0 | 2 | – |
| July | 1 | 2 | ▲ 100.0% |
| August | 2 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 2 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 12 | ▲ 500.0% |
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 97.3% 638
- Cancelled 2.7% 18
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026
Legs flown under this number
1| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ORD MKE Chicago O'Hare International Airport – General Mitchell International Airport | 108 | 34.1 min | 67.2% | 655 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 85.0% | 0 |
| November 2024 | 29 | 29 | 69.0% | 0 |
| December 2024 | 31 | 31 | 83.9% | 0 |
| January 2025 | 31 | 31 | 74.2% | 0 |
| February 2025 | 28 | 28 | 71.4% | 0 |
| March 2025 | 31 | 31 | 71.0% | 0 |
| April 2025 | 30 | 29 | 79.3% | 1 |
| May 2025 | 31 | 31 | 83.9% | 0 |
| June 2025 | 30 | 30 | 53.3% | 0 |
| July 2025 | 31 | 30 | 50.0% | 1 |
| August 2025 | 31 | 29 | 69.0% | 2 |
| September 2025 | 30 | 30 | 66.7% | 0 |
| October 2025 | 31 | 31 | 74.2% | 0 |
| November 2025 | 29 | 27 | 59.3% | 2 |
| December 2025 | 31 | 31 | 48.4% | 0 |
| January 2026 | 31 | 31 | 48.4% | 0 |
| February 2026 | 28 | 28 | 64.3% | 0 |
| March 2026 | 31 | 27 | 70.4% | 4 |
| April 2026 | 30 | 26 | 53.9% | 4 |
| May 2026 | 31 | 31 | 71.0% | 0 |
| June 2026 | 30 | 28 | 60.7% | 2 |
| July 2026 | 31 | 29 | 75.9% | 2 |