OO4991
OO4991 (SkyWest Airlines) is a multi-stop service on 18 routes, busiest Phoenix to San Luis Obispo. Of 676 departures recorded from October 2024 to July 2026, 84.4% left on time, according to the US BTS.
- On-time departures84.4%of 676 flights
- Average delay8.1 min
- July 202661▲ 134.6%vs July 2025
- Cancelled0.6%
- Legs flown under this number18
according to the US BTS · Oct 31, 2024 → Jul 31, 2026 domestic flights only
Recorded departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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 | 27 | 5 | ▼ 81.5% |
| February | 28 | 19 | ▼ 32.1% |
| March | 20 | 31 | ▲ 55.0% |
| April | 57 | 46 | ▼ 19.3% |
| May | 62 | 56 | ▼ 9.7% |
| June | 9 | 60 | ▲ 566.7% |
| July | 26 | 61 | ▲ 134.6% |
| August | 31 | – | – |
| September | 58 | – | – |
| October | 20 | – | in progress |
| November | 2 | – | – |
| December | 16 | – | – |
| Year to date (Jan–Jul) | 229 | 278 | ▲ 21.4% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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 | 96.3% | 40.0% | ▼ 58.5% |
| February | 89.3% | 63.2% | ▼ 29.3% |
| March | 90.0% | 70.0% | ▼ 22.2% |
| April | 93.0% | 78.3% | ▼ 15.8% |
| May | 88.3% | 94.6% | ▲ 7.1% |
| June | 100.0% | 76.7% | ▼ 23.3% |
| July | 88.0% | 83.6% | ▼ 5.0% |
| August | 80.7% | – | – |
| September | 86.2% | – | – |
| October | 95.0% | – | in progress |
| November | 100.0% | – | – |
| December | 81.3% | – | – |
| Year-to-date average (Jan–Jul) | 92.1% | 72.3% | ▼ 21.5% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Partial coverage: domestic flights only · 22 of 22 periods have data
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 2 | 0 | ▼ 100.0% |
| June | 0 | 0 | – |
| July | 1 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 3 | 1 | ▼ 66.7% |
according to the US BTS · October 2024 → July 2026
This is not a forecast
This is a historical record of departures already flown, not a forecast for your flight.
This number flies several legs
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 99.4% 672
- Cancelled 0.6% 4
Share of all recorded flights in the period, all legs. · Oct 31, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
99 of 9
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| PHX SBP Phoenix Sky Harbor International Airport – San Luis County Regional Airport | 818 | 6.5 min | 79.4% | 239 |
| PHX FSD Phoenix Sky Harbor International Airport – Sioux Falls Regional Airport | 1,738 | 5.4 min | 87.4% | 103 |
| FSD PHX Sioux Falls Regional Airport – Phoenix Sky Harbor International Airport | 1,738 | 12.6 min | 82.4% | 102 |
| SBP PHX San Luis County Regional Airport – Phoenix Sky Harbor International Airport | 818 | 1.9 min | 89.7% | 39 |
| ORD LEX Chicago O'Hare International Airport – Blue Grass Airport | 521 | 0.1 min | 96.8% | 31 |
| LFT DFW Lafayette Regional Airport – Dallas Fort Worth International Airport | 564 | 6.5 min | 83.3% | 31 |
| LEX ORD Blue Grass Airport – Chicago O'Hare International Airport | 521 | -2.5 min | 93.6% | 31 |
| DFW LFT Dallas Fort Worth International Airport – Lafayette Regional Airport | 564 | 0.1 min | 93.3% | 31 |
| CLE ORD Cleveland Hopkins International Airport – Chicago O'Hare International Airport | 507 | 48.4 min | 90.0% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 1 | 1 | 100.0% | 0 |
| November 2024 | 15 | 15 | 93.3% | 0 |
| December 2024 | 26 | 26 | 61.5% | 0 |
| January 2025 | 27 | 27 | 96.3% | 0 |
| February 2025 | 28 | 28 | 89.3% | 0 |
| March 2025 | 20 | 20 | 90.0% | 0 |
| April 2025 | 57 | 57 | 93.0% | 0 |
| May 2025 | 62 | 60 | 88.3% | 2 |
| June 2025 | 9 | 9 | 100.0% | 0 |
| July 2025 | 26 | 25 | 88.0% | 1 |
| August 2025 | 31 | 31 | 80.7% | 0 |
| September 2025 | 58 | 58 | 86.2% | 0 |
| October 2025 | 20 | 20 | 95.0% | 0 |
| November 2025 | 2 | 2 | 100.0% | 0 |
| December 2025 | 16 | 16 | 81.3% | 0 |
| January 2026 | 5 | 5 | 40.0% | 0 |
| February 2026 | 19 | 19 | 63.2% | 0 |
| March 2026 | 31 | 30 | 70.0% | 1 |
| April 2026 | 46 | 46 | 78.3% | 0 |
| May 2026 | 56 | 56 | 94.6% | 0 |
| June 2026 | 60 | 60 | 76.7% | 0 |
| July 2026 | 61 | 61 | 83.6% | 0 |