WN1538
WN1538 (Southwest Airlines) is a multi-stop service on 41 routes, busiest Baltimore to Norfolk. Of 777 departures recorded from October 2024 to July 2026, 73.5% left on time, according to the US BTS.
- On-time departures73.5%of 777 flights
- Average delay12.7 min
- July 202653▲ 165.0%vs July 2025
- Cancelled0.9%
- Legs flown under this number41
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 | 33 | ▲ 6.5% |
| February | 28 | 25 | ▼ 10.7% |
| March | 57 | 66 | ▲ 15.8% |
| April | 37 | 44 | ▲ 18.9% |
| May | 31 | 39 | ▲ 25.8% |
| June | 18 | 50 | ▲ 177.8% |
| July | 20 | 53 | ▲ 165.0% |
| August | 32 | – | – |
| September | 34 | – | – |
| October | 22 | – | in progress |
| November | 32 | – | – |
| December | 35 | – | – |
| Year to date (Jan–Jul) | 222 | 310 | ▲ 39.6% |
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 | 76.7% | 87.9% | ▲ 14.6% |
| February | 81.5% | 80.0% | ▼ 1.8% |
| March | 91.2% | 87.7% | ▼ 3.9% |
| April | 83.8% | 59.1% | ▼ 29.5% |
| May | 90.3% | 55.6% | ▼ 38.5% |
| June | 77.8% | 38.8% | ▼ 50.1% |
| July | 90.0% | 62.3% | ▼ 30.8% |
| August | 75.0% | – | – |
| September | 91.2% | – | – |
| October | 68.2% | – | in progress |
| November | 62.5% | – | – |
| December | 57.1% | – | – |
| Year-to-date average (Jan–Jul) | 84.5% | 67.3% | ▼ 20.3% |
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 | 1 | 0 | ▼ 100.0% |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 3 | – |
| June | 0 | 1 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 5 | ▲ 150.0% |
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 99.1% 770
- Cancelled 0.9% 7
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
7| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| BWI ORF Baltimore/Washington International Thurgood Marshall Airport – Norfolk International Airport | 257 | 10.7 min | 74.0% | 121 |
| DEN MSY Denver International Airport – Louis Armstrong New Orleans International Airport | 1,708 | 5.9 min | 86.3% | 80 |
| ATL DCA Hartsfield Jackson Atlanta International Airport – Ronald Reagan Washington National Airport | 880 | 15.1 min | 69.8% | 63 |
| MCO AUS Orlando International Airport – Austin Bergstrom International Airport | 1,596 | 2.1 min | 92.9% | 42 |
| DEN GEG Denver International Airport – Spokane International Airport | 1,343 | 50.0 min | 26.8% | 42 |
| SNA DEN John Wayne Orange County International Airport – Denver International Airport | 1,360 | 22.7 min | 69.2% | 39 |
| DAL MDW Dallas Love Field – Chicago Midway International Airport | 1,277 | 18.4 min | 62.5% | 34 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 14 | 14 | 64.3% | 0 |
| November 2024 | 41 | 41 | 75.6% | 0 |
| December 2024 | 35 | 35 | 68.6% | 0 |
| January 2025 | 31 | 30 | 76.7% | 1 |
| February 2025 | 28 | 27 | 81.5% | 1 |
| March 2025 | 57 | 57 | 91.2% | 0 |
| April 2025 | 37 | 37 | 83.8% | 0 |
| May 2025 | 31 | 31 | 90.3% | 0 |
| June 2025 | 18 | 18 | 77.8% | 0 |
| July 2025 | 20 | 20 | 90.0% | 0 |
| August 2025 | 32 | 32 | 75.0% | 0 |
| September 2025 | 34 | 34 | 91.2% | 0 |
| October 2025 | 22 | 22 | 68.2% | 0 |
| November 2025 | 32 | 32 | 62.5% | 0 |
| December 2025 | 35 | 35 | 57.1% | 0 |
| January 2026 | 33 | 33 | 87.9% | 0 |
| February 2026 | 25 | 25 | 80.0% | 0 |
| March 2026 | 66 | 65 | 87.7% | 1 |
| April 2026 | 44 | 44 | 59.1% | 0 |
| May 2026 | 39 | 36 | 55.6% | 3 |
| June 2026 | 50 | 49 | 38.8% | 1 |
| July 2026 | 53 | 53 | 62.3% | 0 |