OO4042
OO4042 (SkyWest Airlines) is a multi-stop service on 4 routes, busiest Ontario to Seattle. Of 727 departures recorded from October 2024 to July 2026, 95.2% left on time, according to the US BTS.
- On-time departures95.2%of 727 flights
- Average delay0.2 min
- July 202662▲ 100.0%vs July 2025
- Cancelled0.1%
- Legs flown under this number4
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 | 19 | ▼ 36.7% |
| May | 31 | 50 | ▲ 61.3% |
| June | 30 | 60 | ▲ 100.0% |
| July | 31 | 62 | ▲ 100.0% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 212 | 281 | ▲ 32.5% |
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 | 93.3% | 90.3% | ▼ 3.2% |
| February | 92.9% | 89.3% | ▼ 3.8% |
| March | 96.8% | 93.6% | ▼ 3.3% |
| April | 96.7% | 84.2% | ▼ 12.9% |
| May | 100.0% | 94.0% | ▼ 6.0% |
| June | 96.7% | 98.3% | ▲ 1.7% |
| July | 100.0% | 91.9% | ▼ 8.1% |
| August | 96.8% | – | – |
| September | 96.7% | – | – |
| October | 100.0% | – | in progress |
| November | 96.7% | – | – |
| December | 96.8% | – | – |
| Year-to-date average (Jan–Jul) | 96.6% | 91.7% | ▼ 5.1% |
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 | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 0 | ▼ 100.0% |
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 99.9% 726
- Cancelled 0.1% 1
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 |
|---|---|---|---|---|
| ONT SEA Ontario International Airport – Seattle–Tacoma International Airport | 1,540 | -0.1 min | 95.4% | 548 |
| SLC PSP Salt Lake City International Airport – Palm Springs International Airport | 871 | -2.9 min | 97.7% | 86 |
| PSP SLC Palm Springs International Airport – Salt Lake City International Airport | 871 | 4.0 min | 91.9% | 86 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 100.0% | 0 |
| November 2024 | 30 | 30 | 90.0% | 0 |
| December 2024 | 31 | 31 | 96.8% | 0 |
| January 2025 | 31 | 30 | 93.3% | 1 |
| February 2025 | 28 | 28 | 92.9% | 0 |
| March 2025 | 31 | 31 | 96.8% | 0 |
| April 2025 | 30 | 30 | 96.7% | 0 |
| May 2025 | 31 | 31 | 100.0% | 0 |
| June 2025 | 30 | 30 | 96.7% | 0 |
| July 2025 | 31 | 31 | 100.0% | 0 |
| August 2025 | 31 | 31 | 96.8% | 0 |
| September 2025 | 30 | 30 | 96.7% | 0 |
| October 2025 | 31 | 31 | 100.0% | 0 |
| November 2025 | 30 | 30 | 96.7% | 0 |
| December 2025 | 31 | 31 | 96.8% | 0 |
| January 2026 | 31 | 31 | 90.3% | 0 |
| February 2026 | 28 | 28 | 89.3% | 0 |
| March 2026 | 31 | 31 | 93.6% | 0 |
| April 2026 | 19 | 19 | 84.2% | 0 |
| May 2026 | 50 | 50 | 94.0% | 0 |
| June 2026 | 60 | 60 | 98.3% | 0 |
| July 2026 | 62 | 62 | 91.9% | 0 |