WN921
WN921 (Southwest Airlines) is a multi-stop service on 39 routes, busiest Baltimore to Miami. Of 821 departures recorded from October 2024 to July 2026, 71.7% left on time, according to the US BTS.
- On-time departures71.7%of 821 flights
- Average delay16.3 min
- July 202676▲ 261.9%vs July 2025
- Cancelled0.6%
- Legs flown under this number39
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 | 37 | 31 | ▼ 16.2% |
| February | 28 | 28 | 0.0% |
| March | 39 | 28 | ▼ 28.2% |
| April | 47 | 30 | ▼ 36.2% |
| May | 49 | 31 | ▼ 36.7% |
| June | 26 | 69 | ▲ 165.4% |
| July | 21 | 76 | ▲ 261.9% |
| August | 33 | – | – |
| September | 31 | – | – |
| October | 45 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 247 | 293 | ▲ 18.6% |
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 | 81.1% | 93.3% | ▲ 15.1% |
| February | 75.0% | 76.9% | ▲ 2.6% |
| March | 74.4% | 48.2% | ▼ 35.2% |
| April | 59.6% | 80.0% | ▲ 34.3% |
| May | 57.1% | 80.7% | ▲ 41.1% |
| June | 65.4% | 59.4% | ▼ 9.1% |
| July | 52.4% | 66.7% | ▲ 27.3% |
| August | 57.6% | – | – |
| September | 58.1% | – | – |
| October | 68.9% | – | in progress |
| November | 96.7% | – | – |
| December | 90.3% | – | – |
| Year-to-date average (Jan–Jul) | 66.4% | 72.2% | ▲ 8.7% |
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 | 0 | 1 | – |
| February | 0 | 2 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 0 | 5 |
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 99.4% 816
- Cancelled 0.6% 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
11Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 85.0% | 0 |
| November 2024 | 36 | 36 | 94.4% | 0 |
| December 2024 | 55 | 55 | 80.0% | 0 |
| January 2025 | 37 | 37 | 81.1% | 0 |
| February 2025 | 28 | 28 | 75.0% | 0 |
| March 2025 | 39 | 39 | 74.4% | 0 |
| April 2025 | 47 | 47 | 59.6% | 0 |
| May 2025 | 49 | 49 | 57.1% | 0 |
| June 2025 | 26 | 26 | 65.4% | 0 |
| July 2025 | 21 | 21 | 52.4% | 0 |
| August 2025 | 33 | 33 | 57.6% | 0 |
| September 2025 | 31 | 31 | 58.1% | 0 |
| October 2025 | 45 | 45 | 68.9% | 0 |
| November 2025 | 30 | 30 | 96.7% | 0 |
| December 2025 | 31 | 31 | 90.3% | 0 |
| January 2026 | 31 | 30 | 93.3% | 1 |
| February 2026 | 28 | 26 | 76.9% | 2 |
| March 2026 | 28 | 27 | 48.2% | 1 |
| April 2026 | 30 | 30 | 80.0% | 0 |
| May 2026 | 31 | 31 | 80.7% | 0 |
| June 2026 | 69 | 69 | 59.4% | 0 |
| July 2026 | 76 | 75 | 66.7% | 1 |