WN940
WN940 (Southwest Airlines) is a multi-stop service on 36 routes, busiest Washington to Chicago. Of 718 departures recorded from October 2024 to July 2026, 77.4% left on time, according to the US BTS.
- On-time departures77.4%of 718 flights
- Average delay11.6 min
- July 202639▼ 2.5%vs July 2025
- Cancelled2.0%
- Legs flown under this number36
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 | 31 | 30 | ▼ 3.2% |
| February | 27 | 28 | ▲ 3.7% |
| March | 31 | 19 | ▼ 38.7% |
| April | 36 | 27 | ▼ 25.0% |
| May | 36 | 31 | ▼ 13.9% |
| June | 39 | 38 | ▼ 2.6% |
| July | 40 | 39 | ▼ 2.5% |
| August | 50 | – | – |
| September | 52 | – | – |
| October | 47 | – | in progress |
| November | 19 | – | – |
| December | 17 | – | – |
| Year to date (Jan–Jul) | 240 | 212 | ▼ 11.7% |
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 | 85.2% | 90.0% | ▲ 5.6% |
| February | 85.2% | 78.6% | ▼ 7.8% |
| March | 80.7% | 47.4% | ▼ 41.3% |
| April | 97.2% | 70.4% | ▼ 27.6% |
| May | 88.9% | 61.3% | ▼ 31.0% |
| June | 69.2% | 57.9% | ▼ 16.4% |
| July | 63.2% | 68.4% | ▲ 8.3% |
| August | 89.8% | – | – |
| September | 86.5% | – | – |
| October | 74.5% | – | in progress |
| November | 68.4% | – | – |
| December | 41.2% | – | – |
| Year-to-date average (Jan–Jul) | 81.4% | 67.7% | ▼ 16.8% |
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 | 4 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 2 | 1 | ▼ 50.0% |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 6 | 1 | ▼ 83.3% |
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 98.1% 704
- Cancelled 1.9% 14
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 |
|---|---|---|---|---|
| DCA MDW Ronald Reagan Washington National Airport – Chicago Midway International Airport | 964 | 2.9 min | 91.0% | 93 |
| OAK ONT Oakland San Francisco Bay Airport – Ontario International Airport | 582 | 2.3 min | 86.2% | 58 |
| MCO ORD Orlando International Airport – Chicago O'Hare International Airport | 1,620 | 17.8 min | 65.5% | 58 |
| SJC LAX Mineta San Jose International Airport – Los Angeles International Airport | 496 | 28.8 min | 52.4% | 42 |
| LAX OAK Los Angeles International Airport – Oakland San Francisco Bay Airport | 543 | -3.6 min | 97.6% | 42 |
| LAS BWI Harry Reid International Airport – Baltimore/Washington International Thurgood Marshall Airport | 3,381 | 42.4 min | 37.5% | 42 |
| BNA ATL Nashville International Airport – Hartsfield Jackson Atlanta International Airport | 344 | 21.5 min | 55.3% | 38 |
| PHX LAS Phoenix Sky Harbor International Airport – Harry Reid International Airport | 411 | 7.2 min | 84.9% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 16 | 93.8% | 4 |
| November 2024 | 29 | 29 | 89.7% | 0 |
| December 2024 | 32 | 30 | 90.0% | 2 |
| January 2025 | 31 | 27 | 85.2% | 4 |
| February 2025 | 27 | 27 | 85.2% | 0 |
| March 2025 | 31 | 31 | 80.7% | 0 |
| April 2025 | 36 | 36 | 97.2% | 0 |
| May 2025 | 36 | 36 | 88.9% | 0 |
| June 2025 | 39 | 39 | 69.2% | 0 |
| July 2025 | 40 | 38 | 63.2% | 2 |
| August 2025 | 50 | 49 | 89.8% | 1 |
| September 2025 | 52 | 52 | 86.5% | 0 |
| October 2025 | 47 | 47 | 74.5% | 0 |
| November 2025 | 19 | 19 | 68.4% | 0 |
| December 2025 | 17 | 17 | 41.2% | 0 |
| January 2026 | 30 | 30 | 90.0% | 0 |
| February 2026 | 28 | 28 | 78.6% | 0 |
| March 2026 | 19 | 19 | 47.4% | 0 |
| April 2026 | 27 | 27 | 70.4% | 0 |
| May 2026 | 31 | 31 | 61.3% | 0 |
| June 2026 | 38 | 38 | 57.9% | 0 |
| July 2026 | 39 | 38 | 68.4% | 1 |