OO6439
OO6439 (SkyWest Airlines) is a multi-stop service on 16 routes, busiest Tucson to Phoenix. Of 540 departures recorded from December 2024 to July 2026, 78.5% left on time, according to the US BTS.
- On-time departures78.5%of 540 flights
- Average delay17.1 min
- July 202638▼ 15.6%vs July 2025
- Cancelled1.9%
- Legs flown under this number16
according to the US BTS · Dec 5, 2024 → Jul 31, 2026 domestic flights only
Recorded departures by month
Partial coverage: domestic flights only · 20 of 20 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 | 25 | 5 | ▼ 80.0% |
| February | 12 | 17 | ▲ 41.7% |
| March | 3 | 7 | ▲ 133.3% |
| April | 2 | 48 | ▲ 2,300.0% |
| May | 26 | 62 | ▲ 138.5% |
| June | 30 | 60 | ▲ 100.0% |
| July | 45 | 38 | ▼ 15.6% |
| August | 32 | – | – |
| September | 30 | – | – |
| October | 9 | – | in progress |
| November | 29 | – | – |
| December | 30 | – | – |
| Year to date (Jan–Jul) | 143 | 237 | ▲ 65.7% |
according to the US BTS · December 2024 → July 2026
On-time departures by month
Partial coverage: domestic flights only · 20 of 20 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 | 100.0% | 80.0% | ▼ 20.0% |
| February | 100.0% | 94.1% | ▼ 5.9% |
| March | 100.0% | 71.4% | ▼ 28.6% |
| April | 50.0% | 72.7% | ▲ 45.5% |
| May | 96.2% | 79.0% | ▼ 17.8% |
| June | 73.1% | 68.3% | ▼ 6.5% |
| July | 62.2% | 66.7% | ▲ 7.2% |
| August | 87.5% | – | – |
| September | 73.3% | – | – |
| October | 77.8% | – | in progress |
| November | 82.8% | – | – |
| December | 83.3% | – | – |
| Year-to-date average (Jan–Jul) | 83.1% | 76.0% | ▼ 8.5% |
according to the US BTS · December 2024 → July 2026
Average departure delay by month
Partial coverage: domestic flights only · 20 of 20 periods have data
according to the US BTS · December 2024 → July 2026
Cancelled departures by month
Partial coverage: domestic flights only · 20 of 20 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 | 0 | – |
| April | 0 | 4 | – |
| May | 0 | 0 | – |
| June | 4 | 0 | ▼ 100.0% |
| July | 0 | 2 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 4 | 6 | ▲ 50.0% |
according to the US BTS · December 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 98.1% 530
- Cancelled 1.9% 10
Share of all recorded flights in the period, all legs. · Dec 5, 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 |
|---|---|---|---|---|
| TUS PHX Tucson International Airport – Phoenix Sky Harbor International Airport | 178 | 11.4 min | 84.1% | 88 |
| TYS CLT McGhee Tyson Airport – Charlotte Douglas International Airport | 284 | 37.4 min | 67.8% | 60 |
| CLT TYS Charlotte Douglas International Airport – McGhee Tyson Airport | 284 | 36.2 min | 72.9% | 60 |
| ORD LIT Chicago O'Hare International Airport – Bill & Hillary Clinton National Airport/Adams Field | 889 | 12.6 min | 78.6% | 44 |
| LIT ORD Bill & Hillary Clinton National Airport/Adams Field – Chicago O'Hare International Airport | 889 | 20.9 min | 71.4% | 44 |
| TUS LAX Tucson International Airport – Los Angeles International Airport | 725 | -8.2 min | 100.0% | 37 |
| PHX PSP Phoenix Sky Harbor International Airport – Palm Springs International Airport | 419 | 3.4 min | 91.7% | 36 |
| OKC LAX OKC Will Rogers World Airport – Los Angeles International Airport | 1,906 | 17.0 min | 72.7% | 33 |
| CLE ORD Cleveland Hopkins International Airport – Chicago O'Hare International Airport | 507 | 43.5 min | 48.4% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| December 2024 | 30 | 30 | 86.7% | 0 |
| January 2025 | 25 | 25 | 100.0% | 0 |
| February 2025 | 12 | 12 | 100.0% | 0 |
| March 2025 | 3 | 3 | 100.0% | 0 |
| April 2025 | 2 | 2 | 50.0% | 0 |
| May 2025 | 26 | 26 | 96.2% | 0 |
| June 2025 | 30 | 26 | 73.1% | 4 |
| July 2025 | 45 | 45 | 62.2% | 0 |
| August 2025 | 32 | 32 | 87.5% | 0 |
| September 2025 | 30 | 30 | 73.3% | 0 |
| October 2025 | 9 | 9 | 77.8% | 0 |
| November 2025 | 29 | 29 | 82.8% | 0 |
| December 2025 | 30 | 30 | 83.3% | 0 |
| January 2026 | 5 | 5 | 80.0% | 0 |
| February 2026 | 17 | 17 | 94.1% | 0 |
| March 2026 | 7 | 7 | 71.4% | 0 |
| April 2026 | 48 | 44 | 72.7% | 4 |
| May 2026 | 62 | 62 | 79.0% | 0 |
| June 2026 | 60 | 60 | 68.3% | 0 |
| July 2026 | 38 | 36 | 66.7% | 2 |