WN544
WN544 (Southwest Airlines) is a multi-stop service on 37 routes, busiest San Antonio to Phoenix. Of 706 departures recorded from October 2024 to July 2026, 82.3% left on time, according to the US BTS.
- On-time departures82.3%of 706 flights
- Average delay7.1 min
- July 202637▲ 42.3%vs July 2025
- Cancelled1.6%
- Legs flown under this number37
according to the US BTS · Oct 12, 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 | 32 | 31 | ▼ 3.1% |
| February | 28 | 28 | 0.0% |
| March | 23 | 31 | ▲ 34.8% |
| April | 28 | 32 | ▲ 14.3% |
| May | 31 | 36 | ▲ 16.1% |
| June | 26 | 38 | ▲ 46.2% |
| July | 26 | 37 | ▲ 42.3% |
| August | 36 | – | – |
| September | 38 | – | – |
| October | 56 | – | in progress |
| November | 29 | – | – |
| December | 29 | – | – |
| Year to date (Jan–Jul) | 194 | 233 | ▲ 20.1% |
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 | 100.0% | 83.3% | ▼ 16.7% |
| February | 92.9% | 73.1% | ▼ 21.3% |
| March | 78.3% | 92.9% | ▲ 18.7% |
| April | 82.1% | 67.7% | ▼ 17.5% |
| May | 80.7% | 80.6% | ▼ 0.1% |
| June | 84.0% | 71.1% | ▼ 15.4% |
| July | 96.2% | 73.0% | ▼ 24.1% |
| August | 80.6% | – | – |
| September | 86.8% | – | – |
| October | 92.9% | – | in progress |
| November | 65.5% | – | – |
| December | 60.7% | – | – |
| Year-to-date average (Jan–Jul) | 87.7% | 77.4% | ▼ 11.8% |
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 | 2 | 1 | ▼ 50.0% |
| February | 0 | 2 | – |
| March | 0 | 3 | – |
| April | 0 | 1 | – |
| May | 0 | 0 | – |
| June | 1 | 0 | ▼ 100.0% |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 3 | 7 | ▲ 133.3% |
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 98.4% 695
- Cancelled 1.6% 11
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
99 of 9
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SAT PHX San Antonio International Airport – Phoenix Sky Harbor International Airport | 1,354 | -2.9 min | 96.6% | 90 |
| MCI MCO Kansas City International Airport – Orlando International Airport | 1,726 | 4.9 min | 82.8% | 58 |
| AUS DAL Austin Bergstrom International Airport – Dallas Love Field | 304 | 5.6 min | 86.2% | 58 |
| BNA LGA Nashville International Airport – LaGuardia Airport | 1,228 | 8.2 min | 76.0% | 53 |
| BNA LAS Nashville International Airport – Harry Reid International Airport | 2,549 | 5.2 min | 86.0% | 50 |
| PHX AUS Phoenix Sky Harbor International Airport – Austin Bergstrom International Airport | 1,401 | 8.7 min | 75.0% | 49 |
| MCI PHX Kansas City International Airport – Phoenix Sky Harbor International Airport | 1,677 | 18.8 min | 73.8% | 42 |
| HOU MSY William P. Hobby Airport – Louis Armstrong New Orleans International Airport | 485 | 1.0 min | 95.1% | 42 |
| MDW MSP Chicago Midway International Airport – Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field | 560 | 0.4 min | 96.7% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 13 | 13 | 84.6% | 0 |
| November 2024 | 43 | 43 | 90.7% | 0 |
| December 2024 | 35 | 35 | 85.7% | 0 |
| January 2025 | 32 | 30 | 100.0% | 2 |
| February 2025 | 28 | 28 | 92.9% | 0 |
| March 2025 | 23 | 23 | 78.3% | 0 |
| April 2025 | 28 | 28 | 82.1% | 0 |
| May 2025 | 31 | 31 | 80.7% | 0 |
| June 2025 | 26 | 25 | 84.0% | 1 |
| July 2025 | 26 | 26 | 96.2% | 0 |
| August 2025 | 36 | 36 | 80.6% | 0 |
| September 2025 | 38 | 38 | 86.8% | 0 |
| October 2025 | 56 | 56 | 92.9% | 0 |
| November 2025 | 29 | 29 | 65.5% | 0 |
| December 2025 | 29 | 28 | 60.7% | 1 |
| January 2026 | 31 | 30 | 83.3% | 1 |
| February 2026 | 28 | 26 | 73.1% | 2 |
| March 2026 | 31 | 28 | 92.9% | 3 |
| April 2026 | 32 | 31 | 67.7% | 1 |
| May 2026 | 36 | 36 | 80.6% | 0 |
| June 2026 | 38 | 38 | 71.1% | 0 |
| July 2026 | 37 | 37 | 73.0% | 0 |