OO3991
OO3991 (SkyWest Airlines) is a multi-stop service on 10 routes, busiest Seattle to San Francisco. Of 894 departures recorded from October 2024 to July 2026, 77.8% left on time, according to the US BTS.
- On-time departures77.8%of 894 flights
- Average delay11.9 min
- July 202662▲ 6.9%vs July 2025
- Cancelled0.5%
- Legs flown under this number10
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods18 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 19 | 30 | ▲ 57.9% |
| February | – | 39 | – |
| March | 32 | 55 | ▲ 71.9% |
| April | 18 | 60 | ▲ 233.3% |
| May | 25 | 62 | ▲ 148.0% |
| June | 53 | 60 | ▲ 13.2% |
| July | 58 | 62 | ▲ 6.9% |
| August | 58 | – | – |
| September | 46 | – | – |
| October | 54 | – | in progress |
| November | 52 | – | – |
| December | 50 | – | – |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Months without data are left blank.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods18 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 79.0% | 86.7% | ▲ 9.8% |
| February | – | 87.2% | – |
| March | 87.5% | 81.1% | ▼ 7.3% |
| April | 77.8% | 76.7% | ▼ 1.4% |
| May | 88.0% | 72.6% | ▼ 17.5% |
| June | 79.3% | 45.0% | ▼ 43.2% |
| July | 89.7% | 32.3% | ▼ 64.0% |
| August | 89.7% | – | – |
| September | 82.6% | – | – |
| October | 83.3% | – | in progress |
| November | 82.0% | – | – |
| December | 90.0% | – | – |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods18 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | – | 0 | – |
| March | 0 | 2 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 2 | – | – |
| December | 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 99.6% 890
- Cancelled 0.4% 4
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
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SFO SEA San Francisco International Airport – Seattle–Tacoma International Airport | 1,093 | 12.7 min | 73.3% | 346 |
| SEA SFO Seattle–Tacoma International Airport – San Francisco International Airport | 1,093 | 10.9 min | 75.9% | 346 |
| RAP MSP Rapid City Regional Airport – Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field | 786 | 13.7 min | 93.0% | 86 |
| OMA MSP Eppley Airfield – Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field | 453 | 11.5 min | 88.2% | 34 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 100.0% | 0 |
| November 2024 | 10 | 10 | 90.0% | 0 |
| December 2024 | 31 | 31 | 90.3% | 0 |
| January 2025 | 19 | 19 | 79.0% | 0 |
| March 2025 | 32 | 32 | 87.5% | 0 |
| April 2025 | 18 | 18 | 77.8% | 0 |
| May 2025 | 25 | 25 | 88.0% | 0 |
| June 2025 | 53 | 53 | 79.3% | 0 |
| July 2025 | 58 | 58 | 89.7% | 0 |
| August 2025 | 58 | 58 | 89.7% | 0 |
| September 2025 | 46 | 46 | 82.6% | 0 |
| October 2025 | 54 | 54 | 83.3% | 0 |
| November 2025 | 52 | 50 | 82.0% | 2 |
| December 2025 | 50 | 50 | 90.0% | 0 |
| January 2026 | 30 | 30 | 86.7% | 0 |
| February 2026 | 39 | 39 | 87.2% | 0 |
| March 2026 | 55 | 53 | 81.1% | 2 |
| April 2026 | 60 | 60 | 76.7% | 0 |
| May 2026 | 62 | 62 | 72.6% | 0 |
| June 2026 | 60 | 60 | 45.0% | 0 |
| July 2026 | 62 | 62 | 32.3% | 0 |