WN657
WN657 (Southwest Airlines) is a multi-stop service on 36 routes, busiest Baltimore to Salt Lake City. Of 663 departures recorded from October 2024 to July 2026, 74.9% left on time, according to the US BTS.
- On-time departures74.9%of 663 flights
- Average delay12.2 min
- July 202628▼ 9.7%vs July 2025
- Cancelled0.8%
- Legs flown under this number36
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 | 29 | 10 | ▼ 65.5% |
| February | 28 | 18 | ▼ 35.7% |
| March | 31 | 2 | ▼ 93.5% |
| April | 49 | 37 | ▼ 24.5% |
| May | 49 | 48 | ▼ 2.0% |
| June | 35 | 27 | ▼ 22.9% |
| July | 31 | 28 | ▼ 9.7% |
| August | 36 | – | – |
| September | 34 | – | – |
| October | 35 | – | in progress |
| November | 29 | – | – |
| December | 29 | – | – |
| Year to date (Jan–Jul) | 252 | 170 | ▼ 32.5% |
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 | 78.6% | 100.0% | ▲ 27.3% |
| February | 85.7% | 94.4% | ▲ 10.2% |
| March | 74.2% | 100.0% | ▲ 34.8% |
| April | 77.6% | 54.3% | ▼ 30.0% |
| May | 70.8% | 56.3% | ▼ 20.6% |
| June | 77.1% | 29.6% | ▼ 61.6% |
| July | 87.1% | 35.7% | ▼ 59.0% |
| August | 86.1% | – | – |
| September | 97.1% | – | – |
| October | 65.7% | – | in progress |
| November | 93.1% | – | – |
| December | 75.9% | – | – |
| Year-to-date average (Jan–Jul) | 78.7% | 67.2% | ▼ 14.7% |
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 | 1 | 1 | 0.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 2 | – |
| May | 1 | 0 | ▼ 100.0% |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 3 | ▲ 50.0% |
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 99.2% 658
- Cancelled 0.8% 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 SLC Baltimore/Washington International Thurgood Marshall Airport – Salt Lake City International Airport | 2,994 | 9.1 min | 82.4% | 92 |
| RSW PIT Southwest Florida International Airport – Pittsburgh International Airport | 1,558 | 4.3 min | 85.3% | 61 |
| AUS MCO Austin Bergstrom International Airport – Orlando International Airport | 1,596 | 11.0 min | 85.0% | 60 |
| BNA RSW Nashville International Airport – Southwest Florida International Airport | 1,164 | 28.5 min | 30.0% | 50 |
| LAX LAS Los Angeles International Airport – Harry Reid International Airport | 380 | 21.6 min | 59.5% | 42 |
| AUS LGB Austin Bergstrom International Airport – Long Beach International Airport | 1,970 | 0.7 min | 97.6% | 42 |
| SJC LAS Mineta San Jose International Airport – Harry Reid International Airport | 620 | 25.0 min | 53.3% | 31 |
| LAS MKE Harry Reid International Airport – General Mitchell International Airport | 2,447 | 28.9 min | 61.3% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 30 | 30 | 96.7% | 0 |
| November 2024 | 28 | 28 | 92.9% | 0 |
| December 2024 | 20 | 20 | 75.0% | 0 |
| January 2025 | 29 | 28 | 78.6% | 1 |
| February 2025 | 28 | 28 | 85.7% | 0 |
| March 2025 | 31 | 31 | 74.2% | 0 |
| April 2025 | 49 | 49 | 77.6% | 0 |
| May 2025 | 49 | 48 | 70.8% | 1 |
| June 2025 | 35 | 35 | 77.1% | 0 |
| July 2025 | 31 | 31 | 87.1% | 0 |
| August 2025 | 36 | 36 | 86.1% | 0 |
| September 2025 | 34 | 34 | 97.1% | 0 |
| October 2025 | 35 | 35 | 65.7% | 0 |
| November 2025 | 29 | 29 | 93.1% | 0 |
| December 2025 | 29 | 29 | 75.9% | 0 |
| January 2026 | 10 | 9 | 100.0% | 1 |
| February 2026 | 18 | 18 | 94.4% | 0 |
| March 2026 | 2 | 2 | 100.0% | 0 |
| April 2026 | 37 | 35 | 54.3% | 2 |
| May 2026 | 48 | 48 | 56.3% | 0 |
| June 2026 | 27 | 27 | 29.6% | 0 |
| July 2026 | 28 | 28 | 35.7% | 0 |