WN1440
WN1440 (Southwest Airlines) is a multi-stop service on 30 routes, busiest Phoenix to Houston. Of 609 departures recorded from October 2024 to July 2026, 78.6% left on time, according to the US BTS.
- On-time departures78.6%of 609 flights
- Average delay12.3 min
- July 202632▲ 3.2%vs July 2025
- Cancelled1.8%
- Legs flown under this number30
according to the US BTS · Oct 13, 2024 → Jul 31, 2026 domestic flights only
Recorded departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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 | 27 | 26 | ▼ 3.7% |
| February | 26 | 35 | ▲ 34.6% |
| March | 31 | 32 | ▲ 3.2% |
| April | 22 | 30 | ▲ 36.4% |
| May | 21 | 31 | ▲ 47.6% |
| June | 27 | 34 | ▲ 25.9% |
| July | 31 | 32 | ▲ 3.2% |
| August | 27 | – | – |
| September | 26 | – | – |
| October | 27 | – | in progress |
| November | 39 | – | – |
| December | 29 | – | – |
| Year to date (Jan–Jul) | 185 | 220 | ▲ 18.9% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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 | 79.2% | 91.7% | ▲ 15.8% |
| February | 73.1% | 91.4% | ▲ 25.1% |
| March | 93.6% | 54.8% | ▼ 41.4% |
| April | 95.2% | 93.3% | ▼ 2.0% |
| May | 90.5% | 87.1% | ▼ 3.7% |
| June | 69.2% | 73.5% | ▲ 6.2% |
| July | 96.8% | 50.0% | ▼ 48.3% |
| August | 77.8% | – | – |
| September | 48.0% | – | – |
| October | 74.1% | – | in progress |
| November | 84.6% | – | – |
| December | 44.8% | – | – |
| Year-to-date average (Jan–Jul) | 85.4% | 77.4% | ▼ 9.3% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Partial coverage: domestic flights only · 22 of 22 periods have data
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 3 | 2 | ▼ 33.3% |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 0 | 0 | – |
| June | 1 | 0 | ▼ 100.0% |
| July | 0 | 2 | – |
| August | 0 | – | – |
| September | 1 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 5 | 5 | 0.0% |
according to the US BTS · October 2024 → July 2026
This is not a forecast
This is a historical record of departures already flown, not a forecast for your flight.
This number flies several legs
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 98.2% 598
- Cancelled 1.8% 11
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
99 of 9
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| PHX HOU Phoenix Sky Harbor International Airport – William P. Hobby Airport | 1,638 | 11.2 min | 79.4% | 65 |
| COS HOU City of Colorado Springs Municipal Airport – William P. Hobby Airport | 1,336 | 1.5 min | 91.4% | 58 |
| DCA MCO Ronald Reagan Washington National Airport – Orlando International Airport | 1,224 | 32.3 min | 57.4% | 56 |
| STL MCI St. Louis Lambert International Airport – Kansas City International Airport | 380 | 13.8 min | 71.7% | 46 |
| DEN DAL Denver International Airport – Dallas Love Field | 1,048 | -1.8 min | 97.8% | 46 |
| BOS STL Boston Logan International Airport – St. Louis Lambert International Airport | 1,680 | 4.5 min | 90.5% | 43 |
| SJC SAN Mineta San Jose International Airport – San Diego International Airport | 671 | 1.9 min | 91.4% | 36 |
| MDW ATL Chicago Midway International Airport – Hartsfield Jackson Atlanta International Airport | 952 | 30.8 min | 53.1% | 33 |
| AUS HOU Austin Bergstrom International Airport – William P. Hobby Airport | 238 | -2.2 min | 97.0% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 17 | 17 | 100.0% | 0 |
| November 2024 | 14 | 14 | 100.0% | 0 |
| December 2024 | 25 | 25 | 80.0% | 0 |
| January 2025 | 27 | 24 | 79.2% | 3 |
| February 2025 | 26 | 26 | 73.1% | 0 |
| March 2025 | 31 | 31 | 93.6% | 0 |
| April 2025 | 22 | 21 | 95.2% | 1 |
| May 2025 | 21 | 21 | 90.5% | 0 |
| June 2025 | 27 | 26 | 69.2% | 1 |
| July 2025 | 31 | 31 | 96.8% | 0 |
| August 2025 | 27 | 27 | 77.8% | 0 |
| September 2025 | 26 | 25 | 48.0% | 1 |
| October 2025 | 27 | 27 | 74.1% | 0 |
| November 2025 | 39 | 39 | 84.6% | 0 |
| December 2025 | 29 | 29 | 44.8% | 0 |
| January 2026 | 26 | 24 | 91.7% | 2 |
| February 2026 | 35 | 35 | 91.4% | 0 |
| March 2026 | 32 | 31 | 54.8% | 1 |
| April 2026 | 30 | 30 | 93.3% | 0 |
| May 2026 | 31 | 31 | 87.1% | 0 |
| June 2026 | 34 | 34 | 73.5% | 0 |
| July 2026 | 32 | 30 | 50.0% | 2 |