OO4739
OO4739 (SkyWest Airlines) is a multi-stop service on 18 routes, busiest Chicago to Green Bay. Of 652 departures recorded from October 2024 to July 2026, 78.1% left on time, according to the US BTS.
- On-time departures78.1%of 652 flights
- Average delay18.3 min
- July 202631▲ 0.0%vs July 2025
- Cancelled1.1%
- Legs flown under this number18
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 | 30 | 31 | ▲ 3.3% |
| June | 30 | 30 | 0.0% |
| July | 31 | 31 | 0.0% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 30 | – | in progress |
| November | 29 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 211 | 212 | ▲ 0.5% |
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 | 73.3% | 77.4% | ▲ 5.6% |
| February | 69.2% | 78.6% | ▲ 13.5% |
| March | 61.3% | 64.5% | ▲ 5.3% |
| April | 82.8% | 93.1% | ▲ 12.5% |
| May | 90.0% | 80.7% | ▼ 10.4% |
| June | 56.7% | 83.3% | ▲ 47.0% |
| July | 64.5% | 80.7% | ▲ 25.0% |
| August | 76.7% | – | – |
| September | 90.0% | – | – |
| October | 83.3% | – | in progress |
| November | 89.7% | – | – |
| December | 83.9% | – | – |
| Year-to-date average (Jan–Jul) | 71.1% | 79.7% | ▲ 12.1% |
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 | 2 | 0 | ▼ 100.0% |
| March | 0 | 0 | – |
| April | 1 | 1 | 0.0% |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 4 | 1 | ▼ 75.0% |
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 98.9% 645
- Cancelled 1.1% 7
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
8| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ORD GRB Chicago O'Hare International Airport – Austin Straubel International Airport | 279 | 20.4 min | 72.0% | 218 |
| SFO FAT San Francisco International Airport – Fresno Yosemite International Airport | 253 | 38.3 min | 76.3% | 77 |
| SFO BZN San Francisco International Airport – Bozeman Yellowstone International Airport | 1,298 | 3.0 min | 88.2% | 51 |
| ORD GEG Chicago O'Hare International Airport – Spokane International Airport | 2,404 | 14.8 min | 78.4% | 37 |
| DEN HSV Denver International Airport – Huntsville International Airport | 1,684 | 4.7 min | 82.9% | 36 |
| RDM SFO Roberts Field – San Francisco International Airport | 745 | 16.4 min | 81.3% | 32 |
| FAT SFO Fresno Yosemite International Airport – San Francisco International Airport | 253 | 17.2 min | 80.0% | 30 |
| CRW ORD Yeager Airport – Chicago O'Hare International Airport | 669 | 14.6 min | 80.0% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 85.0% | 0 |
| November 2024 | 29 | 28 | 78.6% | 1 |
| December 2024 | 29 | 29 | 79.3% | 0 |
| January 2025 | 31 | 30 | 73.3% | 1 |
| February 2025 | 28 | 26 | 69.2% | 2 |
| March 2025 | 31 | 31 | 61.3% | 0 |
| April 2025 | 30 | 29 | 82.8% | 1 |
| May 2025 | 30 | 30 | 90.0% | 0 |
| June 2025 | 30 | 30 | 56.7% | 0 |
| July 2025 | 31 | 31 | 64.5% | 0 |
| August 2025 | 31 | 30 | 76.7% | 1 |
| September 2025 | 30 | 30 | 90.0% | 0 |
| October 2025 | 30 | 30 | 83.3% | 0 |
| November 2025 | 29 | 29 | 89.7% | 0 |
| December 2025 | 31 | 31 | 83.9% | 0 |
| January 2026 | 31 | 31 | 77.4% | 0 |
| February 2026 | 28 | 28 | 78.6% | 0 |
| March 2026 | 31 | 31 | 64.5% | 0 |
| April 2026 | 30 | 29 | 93.1% | 1 |
| May 2026 | 31 | 31 | 80.7% | 0 |
| June 2026 | 30 | 30 | 83.3% | 0 |
| July 2026 | 31 | 31 | 80.7% | 0 |