WN1948
WN1948 (Southwest Airlines) is a multi-stop service on 24 routes, busiest Baltimore to San Juan. Of 503 departures recorded from October 2024 to July 2026, 74.1% left on time, according to the US BTS.
- On-time departures74.1%of 503 flights
- Average delay16.0 min
- July 202618▼ 41.9%vs July 2025
- Cancelled1.0%
- Legs flown under this number24
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 | 12 | 35 | ▲ 191.7% |
| February | 15 | 9 | ▼ 40.0% |
| March | 30 | 26 | ▼ 13.3% |
| April | 30 | 27 | ▼ 10.0% |
| May | 31 | 27 | ▼ 12.9% |
| June | 30 | 19 | ▼ 36.7% |
| July | 31 | 18 | ▼ 41.9% |
| August | 15 | – | – |
| September | 13 | – | – |
| October | 29 | – | in progress |
| November | 21 | – | – |
| December | 17 | – | – |
| Year to date (Jan–Jul) | 179 | 161 | ▼ 10.1% |
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 | 66.7% | 97.0% | ▲ 45.4% |
| February | 86.7% | 44.4% | ▼ 48.7% |
| March | 80.0% | 96.2% | ▲ 20.2% |
| April | 60.0% | 88.9% | ▲ 48.2% |
| May | 58.1% | 51.9% | ▼ 10.7% |
| June | 70.0% | 57.9% | ▼ 17.3% |
| July | 54.8% | 35.3% | ▼ 35.6% |
| August | 80.0% | – | – |
| September | 92.3% | – | – |
| October | 82.8% | – | in progress |
| November | 80.0% | – | – |
| December | 68.8% | – | – |
| Year-to-date average (Jan–Jul) | 68.0% | 67.4% | ▼ 1.0% |
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 | 0 | 2 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 0 | 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 99.0% 498
- Cancelled 1.0% 5
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
88 of 8
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| BWI SJU Baltimore/Washington International Thurgood Marshall Airport – Luis Munoz Marin International Airport | 2,525 | 25.5 min | 62.3% | 61 |
| GEG SMF Spokane International Airport – Sacramento International Airport | 1,045 | 4.7 min | 86.7% | 60 |
| SAT PHX San Antonio International Airport – Phoenix Sky Harbor International Airport | 1,354 | 21.7 min | 62.1% | 58 |
| MDW CLT Chicago Midway International Airport – Charlotte Douglas International Airport | 940 | 12.9 min | 72.0% | 50 |
| BZN DEN Bozeman Yellowstone International Airport – Denver International Airport | 844 | 14.1 min | 75.7% | 39 |
| HOU ATL William P. Hobby Airport – Hartsfield Jackson Atlanta International Airport | 1,118 | 51.9 min | 40.6% | 33 |
| EUG DEN Eugene Airport – Denver International Airport | 1,600 | -2.5 min | 93.8% | 32 |
| MSP DEN Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field – Denver International Airport | 1,092 | 19.6 min | 83.3% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 13 | 13 | 69.2% | 0 |
| November 2024 | 19 | 19 | 84.2% | 0 |
| December 2024 | 36 | 36 | 94.4% | 0 |
| January 2025 | 12 | 12 | 66.7% | 0 |
| February 2025 | 15 | 15 | 86.7% | 0 |
| March 2025 | 30 | 30 | 80.0% | 0 |
| April 2025 | 30 | 30 | 60.0% | 0 |
| May 2025 | 31 | 31 | 58.1% | 0 |
| June 2025 | 30 | 30 | 70.0% | 0 |
| July 2025 | 31 | 31 | 54.8% | 0 |
| August 2025 | 15 | 15 | 80.0% | 0 |
| September 2025 | 13 | 13 | 92.3% | 0 |
| October 2025 | 29 | 29 | 82.8% | 0 |
| November 2025 | 21 | 20 | 80.0% | 1 |
| December 2025 | 17 | 16 | 68.8% | 1 |
| January 2026 | 35 | 33 | 97.0% | 2 |
| February 2026 | 9 | 9 | 44.4% | 0 |
| March 2026 | 26 | 26 | 96.2% | 0 |
| April 2026 | 27 | 27 | 88.9% | 0 |
| May 2026 | 27 | 27 | 51.9% | 0 |
| June 2026 | 19 | 19 | 57.9% | 0 |
| July 2026 | 18 | 17 | 35.3% | 1 |