WN4607
WN4607 (Southwest Airlines) is a multi-stop service on 15 routes, busiest St Louis to Boston. Of 296 departures recorded from October 2024 to July 2026, 71.3% left on time, according to the US BTS.
- On-time departures71.3%of 296 flights
- Average delay15.1 min
- July 202630▼ 3.2%vs July 2025
- Cancelled1.0%
- Legs flown under this number15
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods14 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | 1 | – |
| February | – | – | – |
| March | 10 | 35 | ▲ 250.0% |
| April | 3 | 42 | ▲ 1,300.0% |
| May | – | 44 | – |
| June | 26 | 31 | ▲ 19.2% |
| July | 31 | 30 | ▼ 3.2% |
| August | 4 | – | – |
| September | – | – | – |
| October | 29 | – | in progress |
| November | 4 | – | – |
| December | 2 | – | – |
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 periods14 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | 0.0% | – |
| February | – | – | – |
| March | 90.0% | 37.1% | ▼ 58.7% |
| April | 66.7% | 90.5% | ▲ 35.7% |
| May | – | 93.2% | – |
| June | 46.2% | 76.7% | ▲ 66.1% |
| July | 56.7% | 58.6% | ▲ 3.4% |
| August | 75.0% | – | – |
| September | – | – | – |
| October | 100.0% | – | in progress |
| November | 50.0% | – | – |
| December | 0.0% | – | – |
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 periods14 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | 0 | – |
| February | – | – | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | – | 0 | – |
| June | 0 | 1 | – |
| July | 1 | 1 | 0.0% |
| August | 0 | – | – |
| September | – | – | – |
| October | 0 | – | 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 99.0% 293
- Cancelled 1.0% 3
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
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| STL BOS St. Louis Lambert International Airport – Boston Logan International Airport | 1,680 | 31.2 min | 53.3% | 61 |
| SAN SFO San Diego International Airport – San Francisco International Airport | 719 | 14.5 min | 67.3% | 57 |
| OMA LAS Eppley Airfield – Harry Reid International Airport | 1,765 | -3.1 min | 94.7% | 57 |
| TPA DEN Tampa International Airport – Denver International Airport | 2,423 | 4.9 min | 96.7% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 3 | 3 | 66.7% | 0 |
| December 2024 | 1 | 1 | 100.0% | 0 |
| March 2025 | 10 | 10 | 90.0% | 0 |
| April 2025 | 3 | 3 | 66.7% | 0 |
| June 2025 | 26 | 26 | 46.2% | 0 |
| July 2025 | 31 | 30 | 56.7% | 1 |
| August 2025 | 4 | 4 | 75.0% | 0 |
| October 2025 | 29 | 29 | 100.0% | 0 |
| November 2025 | 4 | 4 | 50.0% | 0 |
| December 2025 | 2 | 2 | 0.0% | 0 |
| January 2026 | 1 | 1 | 0.0% | 0 |
| March 2026 | 35 | 35 | 37.1% | 0 |
| April 2026 | 42 | 42 | 90.5% | 0 |
| May 2026 | 44 | 44 | 93.2% | 0 |
| June 2026 | 31 | 30 | 76.7% | 1 |
| July 2026 | 30 | 29 | 58.6% | 1 |