OO4998
OO4998 (SkyWest Airlines) is a multi-stop service on 16 routes, busiest Houston to Dallas-Fort Worth. Of 532 departures recorded from October 2024 to May 2026, 69.8% left on time, according to the US BTS.
- On-time departures69.8%of 532 flights
- Average delay20.7 min
- May 202641▲ 355.6%vs May 2025
- Cancelled4.9%
- Legs flown under this number16
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods16 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 17 | 17 | 0.0% |
| February | 16 | 4 | ▼ 75.0% |
| March | 29 | – | – |
| April | 57 | 48 | ▼ 15.8% |
| May | 9 | 41 | ▲ 355.6% |
| June | 26 | – | – |
| July | 31 | – | – |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 28 | – | – |
| December | 31 | – | – |
according to the US BTS · October 2024 → May 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 periods16 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 78.6% | 87.5% | ▲ 11.4% |
| February | 75.0% | 75.0% | 0.0% |
| March | 75.9% | – | – |
| April | 54.4% | 68.9% | ▲ 26.7% |
| May | 44.4% | 61.1% | ▲ 37.5% |
| June | 73.1% | – | – |
| July | 56.7% | – | – |
| August | 71.4% | – | – |
| September | 86.2% | – | – |
| October | 48.4% | – | in progress |
| November | 87.0% | – | – |
| December | 90.0% | – | – |
according to the US BTS · October 2024 → May 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → May 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods16 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 3 | 1 | ▼ 66.7% |
| February | 0 | 0 | – |
| March | 0 | – | – |
| April | 0 | 3 | – |
| May | 0 | 5 | – |
| June | 0 | – | – |
| July | 1 | – | – |
| August | 3 | – | – |
| September | 1 | – | – |
| October | 0 | – | in progress |
| November | 5 | – | – |
| December | 1 | – | – |
according to the US BTS · October 2024 → May 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 95.1% 506
- Cancelled 4.9% 26
Share of all recorded flights in the period, all legs. · Oct 15, 2024 → May 21, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
8| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| HOU DFW William P. Hobby Airport – Dallas Fort Worth International Airport | 398 | 5.3 min | 82.9% | 118 |
| MKE ORD General Mitchell International Airport – Chicago O'Hare International Airport | 108 | 22.9 min | 71.2% | 109 |
| ORD DAY Chicago O'Hare International Airport – James M. Cox Dayton International Airport | 386 | 21.0 min | 68.3% | 44 |
| DAY ORD James M. Cox Dayton International Airport – Chicago O'Hare International Airport | 386 | 19.9 min | 61.5% | 44 |
| ORD MKE Chicago O'Hare International Airport – General Mitchell International Airport | 108 | 2.1 min | 84.4% | 33 |
| ORD BNA Chicago O'Hare International Airport – Nashville International Airport | 660 | 26.1 min | 54.8% | 31 |
| BNA ORD Nashville International Airport – Chicago O'Hare International Airport | 660 | 45.8 min | 48.4% | 31 |
| ASE DFW Aspen-Pitkin County Airport (Sardy Field) – Dallas Fort Worth International Airport | 1,128 | 37.4 min | 67.9% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 2 | 2 | 50.0% | 0 |
| November 2024 | 49 | 47 | 72.3% | 2 |
| December 2024 | 35 | 34 | 73.5% | 1 |
| January 2025 | 17 | 14 | 78.6% | 3 |
| February 2025 | 16 | 16 | 75.0% | 0 |
| March 2025 | 29 | 29 | 75.9% | 0 |
| April 2025 | 57 | 57 | 54.4% | 0 |
| May 2025 | 9 | 9 | 44.4% | 0 |
| June 2025 | 26 | 26 | 73.1% | 0 |
| July 2025 | 31 | 30 | 56.7% | 1 |
| August 2025 | 31 | 28 | 71.4% | 3 |
| September 2025 | 30 | 29 | 86.2% | 1 |
| October 2025 | 31 | 31 | 48.4% | 0 |
| November 2025 | 28 | 23 | 87.0% | 5 |
| December 2025 | 31 | 30 | 90.0% | 1 |
| January 2026 | 17 | 16 | 87.5% | 1 |
| February 2026 | 4 | 4 | 75.0% | 0 |
| April 2026 | 48 | 45 | 68.9% | 3 |
| May 2026 | 41 | 36 | 61.1% | 5 |