OO5439
OO5439 (SkyWest Airlines) is a multi-stop service on 8 routes, busiest Chicago to Charleston. Of 617 departures recorded from October 2024 to July 2026, 71.9% left on time, according to the US BTS.
- On-time departures71.9%of 617 flights
- Average delay20.1 min
- July 202631▲ 40.9%vs July 2025
- Cancelled2.6%
- Legs flown under this number8
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 | 28 | 31 | ▲ 10.7% |
| February | 28 | 27 | ▼ 3.6% |
| March | 31 | 31 | 0.0% |
| April | 30 | 30 | 0.0% |
| May | 31 | 31 | 0.0% |
| June | 30 | 24 | ▼ 20.0% |
| July | 22 | 31 | ▲ 40.9% |
| August | 24 | – | – |
| September | 30 | – | – |
| October | 29 | – | in progress |
| November | 23 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 200 | 205 | ▲ 2.5% |
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 | 70.4% | 55.2% | ▼ 21.6% |
| February | 70.4% | 70.4% | 0.0% |
| March | 71.0% | 57.1% | ▼ 19.5% |
| April | 96.6% | 62.1% | ▼ 35.7% |
| May | 80.7% | 51.6% | ▼ 36.0% |
| June | 90.0% | 79.2% | ▼ 12.0% |
| July | 86.4% | 55.2% | ▼ 36.1% |
| August | 79.2% | – | – |
| September | 80.0% | – | – |
| October | 86.2% | – | in progress |
| November | 84.2% | – | – |
| December | 56.7% | – | – |
| Year-to-date average (Jan–Jul) | 80.8% | 61.5% | ▼ 23.8% |
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 | 2 | ▲ 100.0% |
| February | 1 | 0 | ▼ 100.0% |
| March | 0 | 3 | – |
| April | 1 | 1 | 0.0% |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 2 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 4 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 3 | 8 | ▲ 166.7% |
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 97.4% 601
- Cancelled 2.6% 16
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 |
|---|---|---|---|---|
| ORD CRW Chicago O'Hare International Airport – Yeager Airport | 669 | 20.3 min | 70.0% | 466 |
| IAH LIT George Bush Intercontinental Airport – Bill & Hillary Clinton National Airport/Adams Field | 603 | 13.5 min | 80.0% | 35 |
| ORD LNK Chicago O'Hare International Airport – Lincoln Airport | 749 | 63.0 min | 55.2% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 85.0% | 0 |
| November 2024 | 29 | 29 | 65.5% | 0 |
| December 2024 | 26 | 26 | 61.5% | 0 |
| January 2025 | 28 | 27 | 70.4% | 1 |
| February 2025 | 28 | 27 | 70.4% | 1 |
| March 2025 | 31 | 31 | 71.0% | 0 |
| April 2025 | 30 | 29 | 96.6% | 1 |
| May 2025 | 31 | 31 | 80.7% | 0 |
| June 2025 | 30 | 30 | 90.0% | 0 |
| July 2025 | 22 | 22 | 86.4% | 0 |
| August 2025 | 24 | 24 | 79.2% | 0 |
| September 2025 | 30 | 30 | 80.0% | 0 |
| October 2025 | 29 | 29 | 86.2% | 0 |
| November 2025 | 23 | 19 | 84.2% | 4 |
| December 2025 | 31 | 30 | 56.7% | 1 |
| January 2026 | 31 | 29 | 55.2% | 2 |
| February 2026 | 27 | 27 | 70.4% | 0 |
| March 2026 | 31 | 28 | 57.1% | 3 |
| April 2026 | 30 | 29 | 62.1% | 1 |
| May 2026 | 31 | 31 | 51.6% | 0 |
| June 2026 | 24 | 24 | 79.2% | 0 |
| July 2026 | 31 | 29 | 55.2% | 2 |