WN3615
WN3615 (Southwest Airlines) is a multi-stop service on 18 routes, busiest Houston to Baltimore. Of 525 departures recorded from October 2024 to July 2026, 77.2% left on time, according to the US BTS.
- On-time departures77.2%of 525 flights
- Average delay14.0 min
- July 202630▼ 26.8%vs July 2025
- Cancelled1.3%
- Legs flown under this number18
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 | 26 | 3 | ▼ 88.5% |
| February | 19 | 3 | ▼ 84.2% |
| March | 33 | 23 | ▼ 30.3% |
| April | 31 | 29 | ▼ 6.5% |
| May | 31 | 31 | 0.0% |
| June | 36 | 30 | ▼ 16.7% |
| July | 41 | 30 | ▼ 26.8% |
| August | 33 | – | – |
| September | 34 | – | – |
| October | 14 | – | in progress |
| November | 6 | – | – |
| December | 11 | – | – |
| Year to date (Jan–Jul) | 217 | 149 | ▼ 31.3% |
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 | 82.6% | 66.7% | ▼ 19.3% |
| February | 94.4% | 66.7% | ▼ 29.4% |
| March | 75.8% | 68.2% | ▼ 10.0% |
| April | 77.4% | 65.5% | ▼ 15.4% |
| May | 90.3% | 43.3% | ▼ 52.0% |
| June | 94.4% | 86.7% | ▼ 8.2% |
| July | 95.1% | 93.3% | ▼ 1.9% |
| August | 75.8% | – | – |
| September | 50.0% | – | – |
| October | 71.4% | – | in progress |
| November | 80.0% | – | – |
| December | 72.7% | – | – |
| Year-to-date average (Jan–Jul) | 87.2% | 70.1% | ▼ 19.6% |
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 | 3 | 0 | ▼ 100.0% |
| February | 1 | 0 | ▼ 100.0% |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 1 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 4 | 2 | ▼ 50.0% |
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 98.7% 518
- Cancelled 1.3% 7
Share of all recorded flights in the period, all legs. · Oct 13, 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 |
|---|---|---|---|---|
| HOU BWI William P. Hobby Airport – Baltimore/Washington International Thurgood Marshall Airport | 2,003 | 14.3 min | 79.4% | 106 |
| DAL LAS Dallas Love Field – Harry Reid International Airport | 1,714 | 1.2 min | 95.1% | 61 |
| DJT BWI President Donald J. Trump International Airport – Baltimore/Washington International Thurgood Marshall Airport | 1,425 | 4.1 min | 87.9% | 58 |
| OKC DEN OKC Will Rogers World Airport – Denver International Airport | 796 | 23.3 min | 52.6% | 58 |
| SFO LAS San Francisco International Airport – Harry Reid International Airport | 665 | 22.9 min | 66.7% | 57 |
| SEA DEN Seattle–Tacoma International Airport – Denver International Airport | 1,645 | 10.2 min | 93.0% | 57 |
| PHX SAT Phoenix Sky Harbor International Airport – San Antonio International Airport | 1,354 | 23.7 min | 66.7% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 3 | 3 | 100.0% | 0 |
| November 2024 | 28 | 28 | 85.7% | 0 |
| December 2024 | 30 | 30 | 60.0% | 0 |
| January 2025 | 26 | 23 | 82.6% | 3 |
| February 2025 | 19 | 18 | 94.4% | 1 |
| March 2025 | 33 | 33 | 75.8% | 0 |
| April 2025 | 31 | 31 | 77.4% | 0 |
| May 2025 | 31 | 31 | 90.3% | 0 |
| June 2025 | 36 | 36 | 94.4% | 0 |
| July 2025 | 41 | 41 | 95.1% | 0 |
| August 2025 | 33 | 33 | 75.8% | 0 |
| September 2025 | 34 | 34 | 50.0% | 0 |
| October 2025 | 14 | 14 | 71.4% | 0 |
| November 2025 | 6 | 5 | 80.0% | 1 |
| December 2025 | 11 | 11 | 72.7% | 0 |
| January 2026 | 3 | 3 | 66.7% | 0 |
| February 2026 | 3 | 3 | 66.7% | 0 |
| March 2026 | 23 | 22 | 68.2% | 1 |
| April 2026 | 29 | 29 | 65.5% | 0 |
| May 2026 | 31 | 30 | 43.3% | 1 |
| June 2026 | 30 | 30 | 86.7% | 0 |
| July 2026 | 30 | 30 | 93.3% | 0 |