WN4222
WN4222 (Southwest Airlines) is a multi-stop service on 15 routes, busiest Oakland to Denver. Of 426 departures recorded from November 2024 to July 2026, 72.5% left on time, according to the US BTS.
- On-time departures72.5%of 426 flights
- Average delay16.0 min
- July 202630▼ 3.2%vs July 2025
- Cancelled0.2%
- Legs flown under this number15
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 | 28 | 29 | ▲ 3.6% |
| February | 18 | 28 | ▲ 55.6% |
| March | 36 | 8 | ▼ 77.8% |
| April | 9 | 14 | ▲ 55.6% |
| May | – | 18 | – |
| June | 26 | 28 | ▲ 7.7% |
| July | 31 | 30 | ▼ 3.2% |
| August | 4 | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 39 | – | – |
| December | 26 | – | – |
according to the US BTS · November 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 periods16 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 85.7% | 69.0% | ▼ 19.5% |
| February | 77.8% | 78.6% | ▲ 1.0% |
| March | 77.8% | 87.5% | ▲ 12.5% |
| April | 33.3% | 42.9% | ▲ 28.6% |
| May | – | 44.4% | – |
| June | 84.6% | 46.4% | ▼ 45.1% |
| July | 77.4% | 36.7% | ▼ 52.6% |
| August | 75.0% | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 94.7% | – | – |
| December | 92.3% | – | – |
according to the US BTS · November 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · November 2024 → July 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 | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | – | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
according to the US BTS · November 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 99.8% 425
- Cancelled 0.2% 1
Share of all recorded flights in the period, all legs. · Nov 3, 2024 → Jul 31, 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 |
|---|---|---|---|---|
| OAK DEN Oakland San Francisco Bay Airport – Denver International Airport | 1,537 | 7.2 min | 76.9% | 65 |
| PHX HNL Phoenix Sky Harbor International Airport – Daniel K. Inouye International Airport | 4,689 | 9.4 min | 80.3% | 61 |
| MCO LAS Orlando International Airport – Harry Reid International Airport | 3,276 | 8.1 min | 74.1% | 58 |
| RNO LAS Reno Tahoe International Airport – Harry Reid International Airport | 556 | -2.5 min | 95.9% | 49 |
| DEN FLL Denver International Airport – Fort Lauderdale Hollywood International Airport | 2,739 | 56.5 min | 32.7% | 49 |
| LGB OAK Long Beach International Airport – Oakland San Francisco Bay Airport | 569 | 7.6 min | 86.1% | 36 |
| SMF SAN Sacramento International Airport – San Diego International Airport | 773 | 25.2 min | 69.7% | 33 |
| SJC AUS Mineta San Jose International Airport – Austin Bergstrom International Airport | 2,372 | 30.8 min | 46.9% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| November 2024 | 25 | 25 | 88.0% | 0 |
| December 2024 | 29 | 29 | 72.4% | 0 |
| January 2025 | 28 | 28 | 85.7% | 0 |
| February 2025 | 18 | 18 | 77.8% | 0 |
| March 2025 | 36 | 36 | 77.8% | 0 |
| April 2025 | 9 | 9 | 33.3% | 0 |
| June 2025 | 26 | 26 | 84.6% | 0 |
| July 2025 | 31 | 31 | 77.4% | 0 |
| August 2025 | 4 | 4 | 75.0% | 0 |
| November 2025 | 39 | 38 | 94.7% | 1 |
| December 2025 | 26 | 26 | 92.3% | 0 |
| January 2026 | 29 | 29 | 69.0% | 0 |
| February 2026 | 28 | 28 | 78.6% | 0 |
| March 2026 | 8 | 8 | 87.5% | 0 |
| April 2026 | 14 | 14 | 42.9% | 0 |
| May 2026 | 18 | 18 | 44.4% | 0 |
| June 2026 | 28 | 28 | 46.4% | 0 |
| July 2026 | 30 | 30 | 36.7% | 0 |