WN1598
WN1598 (Southwest Airlines) is a multi-stop service on 34 routes, busiest Austin to Denver. Of 707 departures recorded from October 2024 to July 2026, 77.6% left on time, according to the US BTS.
- On-time departures77.6%of 707 flights
- Average delay10.6 min
- July 202630▼ 31.8%vs July 2025
- Cancelled0.9%
- Legs flown under this number34
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 | 26 | ▼ 16.1% |
| February | 30 | 27 | ▼ 10.0% |
| March | 28 | 50 | ▲ 78.6% |
| April | 38 | 31 | ▼ 18.4% |
| May | 40 | 27 | ▼ 32.5% |
| June | 45 | 29 | ▼ 35.6% |
| July | 44 | 30 | ▼ 31.8% |
| August | 29 | – | – |
| September | 26 | – | – |
| October | 31 | – | in progress |
| November | 40 | – | – |
| December | 25 | – | – |
| Year to date (Jan–Jul) | 256 | 220 | ▼ 14.1% |
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 | 70.0% | 88.5% | ▲ 26.4% |
| February | 66.7% | 85.2% | ▲ 27.8% |
| March | 100.0% | 61.7% | ▼ 38.3% |
| April | 84.2% | 51.6% | ▼ 38.7% |
| May | 52.5% | 33.3% | ▼ 36.5% |
| June | 88.9% | 96.6% | ▲ 8.6% |
| July | 86.1% | 96.6% | ▲ 12.2% |
| August | 79.3% | – | – |
| September | 84.6% | – | – |
| October | 87.1% | – | in progress |
| November | 67.5% | – | – |
| December | 76.0% | – | – |
| Year-to-date average (Jan–Jul) | 78.3% | 73.3% | ▼ 6.4% |
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 | 1 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 3 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 1 | 0.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 4 | ▲ 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 99.2% 701
- Cancelled 0.8% 6
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
10Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 19 | 19 | 89.5% | 0 |
| November 2024 | 30 | 30 | 76.7% | 0 |
| December 2024 | 31 | 31 | 100.0% | 0 |
| January 2025 | 31 | 30 | 70.0% | 1 |
| February 2025 | 30 | 30 | 66.7% | 0 |
| March 2025 | 28 | 28 | 100.0% | 0 |
| April 2025 | 38 | 38 | 84.2% | 0 |
| May 2025 | 40 | 40 | 52.5% | 0 |
| June 2025 | 45 | 45 | 88.9% | 0 |
| July 2025 | 44 | 43 | 86.1% | 1 |
| August 2025 | 29 | 29 | 79.3% | 0 |
| September 2025 | 26 | 26 | 84.6% | 0 |
| October 2025 | 31 | 31 | 87.1% | 0 |
| November 2025 | 40 | 40 | 67.5% | 0 |
| December 2025 | 25 | 25 | 76.0% | 0 |
| January 2026 | 26 | 26 | 88.5% | 0 |
| February 2026 | 27 | 27 | 85.2% | 0 |
| March 2026 | 50 | 47 | 61.7% | 3 |
| April 2026 | 31 | 31 | 51.6% | 0 |
| May 2026 | 27 | 27 | 33.3% | 0 |
| June 2026 | 29 | 29 | 96.6% | 0 |
| July 2026 | 30 | 29 | 96.6% | 1 |