WN187
WN187 (Southwest Airlines) is a multi-stop service on 40 routes, busiest Denver to Tampa. Of 761 departures recorded from October 2024 to July 2026, 69.7% left on time, according to the US BTS.
- On-time departures69.7%of 761 flights
- Average delay15.4 min
- July 202645▲ 45.2%vs July 2025
- Cancelled0.4%
- Legs flown under this number40
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 | 27 | ▼ 12.9% |
| February | 28 | 27 | ▼ 3.6% |
| March | 43 | 92 | ▲ 114.0% |
| April | 25 | 43 | ▲ 72.0% |
| May | 16 | 31 | ▲ 93.8% |
| June | 29 | 42 | ▲ 44.8% |
| July | 31 | 45 | ▲ 45.2% |
| August | 32 | – | – |
| September | 30 | – | – |
| October | 48 | – | in progress |
| November | 29 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 203 | 307 | ▲ 51.2% |
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 | 61.3% | 84.6% | ▲ 38.1% |
| February | 57.1% | 96.3% | ▲ 68.5% |
| March | 86.1% | 59.8% | ▼ 30.5% |
| April | 79.2% | 83.7% | ▲ 5.7% |
| May | 62.5% | 80.7% | ▲ 29.0% |
| June | 51.7% | 76.2% | ▲ 47.3% |
| July | 54.8% | 71.1% | ▲ 29.7% |
| August | 75.0% | – | – |
| September | 80.0% | – | – |
| October | 64.6% | – | in progress |
| November | 58.6% | – | – |
| December | 29.0% | – | – |
| Year-to-date average (Jan–Jul) | 64.7% | 78.9% | ▲ 22.0% |
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 | 0 | – |
| March | 0 | 0 | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 1 | 0.0% |
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 99.6% 758
- Cancelled 0.4% 3
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
7| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DEN TPA Denver International Airport – Tampa International Airport | 2,423 | 16.2 min | 64.1% | 103 |
| SFO SAN San Francisco International Airport – San Diego International Airport | 719 | 43.9 min | 40.6% | 64 |
| BWI DJT Baltimore/Washington International Thurgood Marshall Airport – President Donald J. Trump International Airport | 1,425 | 11.8 min | 81.0% | 58 |
| LAS SNA Harry Reid International Airport – John Wayne Orange County International Airport | 365 | 9.5 min | 74.0% | 50 |
| BUR ABQ Hollywood Burbank/Bob Hope Airport – Albuquerque International Sunport | 1,079 | 1.0 min | 90.0% | 50 |
| HOU LAS William P. Hobby Airport – Harry Reid International Airport | 1,985 | 23.3 min | 41.9% | 43 |
| STL RDU St. Louis Lambert International Airport – Raleigh-Durham International Airport | 1,072 | -4.7 min | 97.4% | 39 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 19 | 19 | 89.5% | 0 |
| November 2024 | 30 | 29 | 86.2% | 1 |
| December 2024 | 32 | 32 | 62.5% | 0 |
| January 2025 | 31 | 31 | 61.3% | 0 |
| February 2025 | 28 | 28 | 57.1% | 0 |
| March 2025 | 43 | 43 | 86.1% | 0 |
| April 2025 | 25 | 24 | 79.2% | 1 |
| May 2025 | 16 | 16 | 62.5% | 0 |
| June 2025 | 29 | 29 | 51.7% | 0 |
| July 2025 | 31 | 31 | 54.8% | 0 |
| August 2025 | 32 | 32 | 75.0% | 0 |
| September 2025 | 30 | 30 | 80.0% | 0 |
| October 2025 | 48 | 48 | 64.6% | 0 |
| November 2025 | 29 | 29 | 58.6% | 0 |
| December 2025 | 31 | 31 | 29.0% | 0 |
| January 2026 | 27 | 26 | 84.6% | 1 |
| February 2026 | 27 | 27 | 96.3% | 0 |
| March 2026 | 92 | 92 | 59.8% | 0 |
| April 2026 | 43 | 43 | 83.7% | 0 |
| May 2026 | 31 | 31 | 80.7% | 0 |
| June 2026 | 42 | 42 | 76.2% | 0 |
| July 2026 | 45 | 45 | 71.1% | 0 |