WN988
WN988 (Southwest Airlines) is a multi-stop service on 28 routes, busiest Seattle to Sacramento. Of 736 departures recorded from October 2024 to July 2026, 75.0% left on time, according to the US BTS.
- On-time departures75.0%of 736 flights
- Average delay13.5 min
- July 202627▼ 12.9%vs July 2025
- Cancelled0.5%
- Legs flown under this number28
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 | 29 | 52 | ▲ 79.3% |
| February | 18 | 45 | ▲ 150.0% |
| March | 30 | 34 | ▲ 13.3% |
| April | 22 | 59 | ▲ 168.2% |
| May | 20 | 66 | ▲ 230.0% |
| June | 29 | 31 | ▲ 6.9% |
| July | 31 | 27 | ▼ 12.9% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 48 | – | in progress |
| November | 28 | – | – |
| December | 29 | – | – |
| Year to date (Jan–Jul) | 179 | 314 | ▲ 75.4% |
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 | 93.1% | 82.7% | ▼ 11.2% |
| February | 94.4% | 72.7% | ▼ 23.0% |
| March | 93.3% | 42.4% | ▼ 54.5% |
| April | 54.6% | 84.8% | ▲ 55.4% |
| May | 65.0% | 78.8% | ▲ 21.2% |
| June | 60.7% | 64.5% | ▲ 6.3% |
| July | 38.7% | 40.7% | ▲ 5.2% |
| August | 67.7% | – | – |
| September | 93.3% | – | – |
| October | 85.4% | – | in progress |
| November | 75.0% | – | – |
| December | 69.0% | – | – |
| Year-to-date average (Jan–Jul) | 71.4% | 66.7% | ▼ 6.6% |
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 | 0 | 0 | – |
| February | 0 | 1 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 1 | 0 | ▼ 100.0% |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 2 | ▲ 100.0% |
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 99.5% 732
- Cancelled 0.5% 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
12Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 14 | 14 | 92.9% | 0 |
| November 2024 | 31 | 30 | 96.7% | 1 |
| December 2024 | 32 | 32 | 87.5% | 0 |
| January 2025 | 29 | 29 | 93.1% | 0 |
| February 2025 | 18 | 18 | 94.4% | 0 |
| March 2025 | 30 | 30 | 93.3% | 0 |
| April 2025 | 22 | 22 | 54.6% | 0 |
| May 2025 | 20 | 20 | 65.0% | 0 |
| June 2025 | 29 | 28 | 60.7% | 1 |
| July 2025 | 31 | 31 | 38.7% | 0 |
| August 2025 | 31 | 31 | 67.7% | 0 |
| September 2025 | 30 | 30 | 93.3% | 0 |
| October 2025 | 48 | 48 | 85.4% | 0 |
| November 2025 | 28 | 28 | 75.0% | 0 |
| December 2025 | 29 | 29 | 69.0% | 0 |
| January 2026 | 52 | 52 | 82.7% | 0 |
| February 2026 | 45 | 44 | 72.7% | 1 |
| March 2026 | 34 | 33 | 42.4% | 1 |
| April 2026 | 59 | 59 | 84.8% | 0 |
| May 2026 | 66 | 66 | 78.8% | 0 |
| June 2026 | 31 | 31 | 64.5% | 0 |
| July 2026 | 27 | 27 | 40.7% | 0 |