WN840
WN840 (Southwest Airlines) is a multi-stop service on 40 routes, busiest Hartford to Baltimore. Of 712 departures recorded from October 2024 to July 2026, 77.1% left on time, according to the US BTS.
- On-time departures77.1%of 712 flights
- Average delay11.2 min
- July 202628▼ 30.0%vs July 2025
- Cancelled0.6%
- Legs flown under this number40
according to the US BTS · Oct 12, 2024 → Jul 31, 2026 domestic flights only
Recorded departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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 | 41 | 30 | ▼ 26.8% |
| February | 42 | 30 | ▼ 28.6% |
| March | 27 | 27 | 0.0% |
| April | 24 | 29 | ▲ 20.8% |
| May | 26 | 31 | ▲ 19.2% |
| June | 36 | 26 | ▼ 27.8% |
| July | 40 | 28 | ▼ 30.0% |
| August | 27 | – | – |
| September | 26 | – | – |
| October | 31 | – | in progress |
| November | 48 | – | – |
| December | 46 | – | – |
| Year to date (Jan–Jul) | 236 | 201 | ▼ 14.8% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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 | 82.5% | 60.0% | ▼ 27.3% |
| February | 90.5% | 65.5% | ▼ 27.6% |
| March | 96.3% | 29.6% | ▼ 69.2% |
| April | 100.0% | 51.7% | ▼ 48.3% |
| May | 96.2% | 48.4% | ▼ 49.7% |
| June | 63.9% | 68.0% | ▲ 6.4% |
| July | 57.5% | 92.9% | ▲ 61.5% |
| August | 88.9% | – | – |
| September | 96.2% | – | – |
| October | 90.3% | – | in progress |
| November | 87.5% | – | – |
| December | 69.6% | – | – |
| Year-to-date average (Jan–Jul) | 83.8% | 59.4% | ▼ 29.1% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Partial coverage: domestic flights only · 22 of 22 periods have data
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 0 | ▼ 100.0% |
| February | 0 | 1 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 1 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 2 | ▲ 100.0% |
according to the US BTS · October 2024 → July 2026
This is not a forecast
This is a historical record of departures already flown, not a forecast for your flight.
This number flies several legs
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 99.4% 708
- Cancelled 0.6% 4
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
88 of 8
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| BDL BWI Bradley International Airport – Baltimore/Washington International Thurgood Marshall Airport | 455 | 14.0 min | 73.4% | 64 |
| AUS TPA Austin Bergstrom International Airport – Tampa International Airport | 1,490 | 28.6 min | 56.7% | 60 |
| DEN SMF Denver International Airport – Sacramento International Airport | 1,460 | 29.0 min | 50.0% | 50 |
| BWI FLL Baltimore/Washington International Thurgood Marshall Airport – Fort Lauderdale Hollywood International Airport | 1,493 | 0.3 min | 96.0% | 50 |
| MDW PHX Chicago Midway International Airport – Phoenix Sky Harbor International Airport | 2,319 | -1.0 min | 98.0% | 49 |
| BNA LAS Nashville International Airport – Harry Reid International Airport | 2,549 | 14.6 min | 59.5% | 42 |
| MCO BDL Orlando International Airport – Bradley International Airport | 1,692 | 7.3 min | 91.4% | 35 |
| BUR SJC Hollywood Burbank/Bob Hope Airport – Mineta San Jose International Airport | 477 | 3.7 min | 84.9% | 34 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 30 | 30 | 93.3% | 0 |
| November 2024 | 34 | 34 | 85.3% | 0 |
| December 2024 | 33 | 32 | 87.5% | 1 |
| January 2025 | 41 | 40 | 82.5% | 1 |
| February 2025 | 42 | 42 | 90.5% | 0 |
| March 2025 | 27 | 27 | 96.3% | 0 |
| April 2025 | 24 | 24 | 100.0% | 0 |
| May 2025 | 26 | 26 | 96.2% | 0 |
| June 2025 | 36 | 36 | 63.9% | 0 |
| July 2025 | 40 | 40 | 57.5% | 0 |
| August 2025 | 27 | 27 | 88.9% | 0 |
| September 2025 | 26 | 26 | 96.2% | 0 |
| October 2025 | 31 | 31 | 90.3% | 0 |
| November 2025 | 48 | 48 | 87.5% | 0 |
| December 2025 | 46 | 46 | 69.6% | 0 |
| January 2026 | 30 | 30 | 60.0% | 0 |
| February 2026 | 30 | 29 | 65.5% | 1 |
| March 2026 | 27 | 27 | 29.6% | 0 |
| April 2026 | 29 | 29 | 51.7% | 0 |
| May 2026 | 31 | 31 | 48.4% | 0 |
| June 2026 | 26 | 25 | 68.0% | 1 |
| July 2026 | 28 | 28 | 92.9% | 0 |