WN3870
WN3870 (Southwest Airlines) is a multi-stop service on 22 routes, busiest Tampa to Houston. Of 355 departures recorded from October 2024 to July 2026, 72.5% left on time, according to the US BTS.
- On-time departures72.5%of 355 flights
- Average delay14.9 min
- July 202630▲ 650.0%vs July 2025
- Cancelled0.6%
- Legs flown under this number22
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods18 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | 27 | – |
| February | 8 | 28 | ▲ 250.0% |
| March | 5 | 31 | ▲ 520.0% |
| April | 12 | 12 | 0.0% |
| May | 13 | 9 | ▼ 30.8% |
| June | 6 | 27 | ▲ 350.0% |
| July | 4 | 30 | ▲ 650.0% |
| August | 13 | – | – |
| September | 16 | – | – |
| October | 74 | – | in progress |
| November | 17 | – | – |
| December | 6 | – | – |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Months without data are left blank.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods18 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | 77.8% | – |
| February | 62.5% | 67.9% | ▲ 8.6% |
| March | 40.0% | 48.4% | ▲ 21.0% |
| April | 100.0% | 58.3% | ▼ 41.7% |
| May | 92.3% | 66.7% | ▼ 27.8% |
| June | 100.0% | 74.1% | ▼ 25.9% |
| July | 100.0% | 65.5% | ▼ 34.5% |
| August | 61.5% | – | – |
| September | 87.5% | – | – |
| October | 74.0% | – | in progress |
| November | 94.1% | – | – |
| December | 50.0% | – | – |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods18 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 1 | – | in progress |
| November | 0 | – | – |
| December | 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 99.4% 353
- Cancelled 0.6% 2
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
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| TPA HOU Tampa International Airport – William P. Hobby Airport | 1,255 | 16.0 min | 74.1% | 58 |
| SNA SMF John Wayne Orange County International Airport – Sacramento International Airport | 650 | 10.2 min | 69.6% | 57 |
| SJU MCO Luis Munoz Marin International Airport – Orlando International Airport | 1,913 | 36.7 min | 45.5% | 33 |
| MDW SDF Chicago Midway International Airport – Louisville Muhammad Ali International Airport | 437 | 6.8 min | 76.7% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 15 | 15 | 86.7% | 0 |
| November 2024 | 2 | 2 | 0.0% | 0 |
| February 2025 | 8 | 8 | 62.5% | 0 |
| March 2025 | 5 | 5 | 40.0% | 0 |
| April 2025 | 12 | 12 | 100.0% | 0 |
| May 2025 | 13 | 13 | 92.3% | 0 |
| June 2025 | 6 | 6 | 100.0% | 0 |
| July 2025 | 4 | 4 | 100.0% | 0 |
| August 2025 | 13 | 13 | 61.5% | 0 |
| September 2025 | 16 | 16 | 87.5% | 0 |
| October 2025 | 74 | 73 | 74.0% | 1 |
| November 2025 | 17 | 17 | 94.1% | 0 |
| December 2025 | 6 | 6 | 50.0% | 0 |
| January 2026 | 27 | 27 | 77.8% | 0 |
| February 2026 | 28 | 28 | 67.9% | 0 |
| March 2026 | 31 | 31 | 48.4% | 0 |
| April 2026 | 12 | 12 | 58.3% | 0 |
| May 2026 | 9 | 9 | 66.7% | 0 |
| June 2026 | 27 | 27 | 74.1% | 0 |
| July 2026 | 30 | 29 | 65.5% | 1 |