WN1590
WN1590 (Southwest Airlines) is a multi-stop service on 30 routes, busiest Phoenix to Dulles. Of 673 departures recorded from October 2024 to July 2026, 70.9% left on time, according to the US BTS.
- On-time departures70.9%of 673 flights
- Average delay15.4 min
- July 202633▼ 29.8%vs July 2025
- Cancelled1.6%
- Legs flown under this number30
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 | 31 | 10 | ▼ 67.7% |
| February | 27 | 18 | ▼ 33.3% |
| March | 31 | 33 | ▲ 6.5% |
| April | 33 | 31 | ▼ 6.1% |
| May | 33 | 30 | ▼ 9.1% |
| June | 39 | 30 | ▼ 23.1% |
| July | 47 | 33 | ▼ 29.8% |
| August | 33 | – | – |
| September | 34 | – | – |
| October | 47 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 241 | 185 | ▼ 23.2% |
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 | 85.7% | 90.0% | ▲ 5.0% |
| February | 59.3% | 77.8% | ▲ 31.3% |
| March | 90.3% | 86.7% | ▼ 4.0% |
| April | 84.9% | 43.3% | ▼ 48.9% |
| May | 63.6% | 50.0% | ▼ 21.4% |
| June | 74.4% | 46.7% | ▼ 37.2% |
| July | 70.2% | 62.5% | ▼ 11.0% |
| August | 45.5% | – | – |
| September | 52.9% | – | – |
| October | 77.8% | – | in progress |
| November | 96.7% | – | – |
| December | 67.7% | – | – |
| Year-to-date average (Jan–Jul) | 75.5% | 65.3% | ▼ 13.5% |
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 | 3 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 3 | – |
| April | 0 | 1 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 2 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 3 | 5 | ▲ 66.7% |
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 98.4% 662
- Cancelled 1.6% 11
Share of all recorded flights in the period, all legs. · Oct 14, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
10Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 14 | 14 | 78.6% | 0 |
| November 2024 | 28 | 28 | 82.1% | 0 |
| December 2024 | 30 | 29 | 93.1% | 1 |
| January 2025 | 31 | 28 | 85.7% | 3 |
| February 2025 | 27 | 27 | 59.3% | 0 |
| March 2025 | 31 | 31 | 90.3% | 0 |
| April 2025 | 33 | 33 | 84.9% | 0 |
| May 2025 | 33 | 33 | 63.6% | 0 |
| June 2025 | 39 | 39 | 74.4% | 0 |
| July 2025 | 47 | 47 | 70.2% | 0 |
| August 2025 | 33 | 33 | 45.5% | 0 |
| September 2025 | 34 | 34 | 52.9% | 0 |
| October 2025 | 47 | 45 | 77.8% | 2 |
| November 2025 | 30 | 30 | 96.7% | 0 |
| December 2025 | 31 | 31 | 67.7% | 0 |
| January 2026 | 10 | 10 | 90.0% | 0 |
| February 2026 | 18 | 18 | 77.8% | 0 |
| March 2026 | 33 | 30 | 86.7% | 3 |
| April 2026 | 31 | 30 | 43.3% | 1 |
| May 2026 | 30 | 30 | 50.0% | 0 |
| June 2026 | 30 | 30 | 46.7% | 0 |
| July 2026 | 33 | 32 | 62.5% | 1 |