WN4903
WN4903 (Southwest Airlines) is a multi-stop service on 10 routes, busiest Dallas to Chicago. Of 175 departures recorded from October 2024 to July 2026, 87.9% left on time, according to the US BTS.
- On-time departures87.9%of 175 flights
- Average delay4.4 min
- July 202629
- Cancelled1.1%
- Legs flown under this number10
Recorded departures by month
Short series — WN4903 has only 11 months so far. Enough to show the level now, not enough to read a trend.
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods8 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 14 | – | – |
| February | 17 | – | – |
| March | 25 | 1 | ▼ 96.0% |
| April | 6 | – | – |
| May | – | – | – |
| June | – | 27 | – |
| July | – | 29 | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 1 | – | – |
| December | – | – | – |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Short series — WN4903 has only 11 months so far. Enough to show the level now, not enough to read a trend.
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 periods8 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 92.3% | – | – |
| February | 100.0% | – | – |
| March | 91.7% | 100.0% | ▲ 9.1% |
| April | 83.3% | – | – |
| May | – | – | – |
| June | – | 85.2% | – |
| July | – | 93.1% | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 100.0% | – | – |
| December | – | – | – |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Short series — WN4903 has only 11 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Short series — WN4903 has only 11 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
The most recent periods8 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | – | – |
| February | 0 | – | – |
| March | 1 | 0 | ▼ 100.0% |
| April | 0 | – | – |
| May | – | – | – |
| June | – | 0 | – |
| July | – | 0 | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 0 | – | – |
| December | – | – | – |
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 98.9% 173
- Cancelled 1.1% 2
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
2| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DAL ORD Dallas Love Field – Chicago O'Hare International Airport | 1,285 | 6.8 min | 84.9% | 67 |
| OAK LAX Oakland San Francisco Bay Airport – Los Angeles International Airport | 543 | 0.4 min | 93.9% | 49 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 10 | 10 | 80.0% | 0 |
| November 2024 | 24 | 24 | 79.2% | 0 |
| December 2024 | 21 | 21 | 81.0% | 0 |
| January 2025 | 14 | 13 | 92.3% | 1 |
| February 2025 | 17 | 17 | 100.0% | 0 |
| March 2025 | 25 | 24 | 91.7% | 1 |
| April 2025 | 6 | 6 | 83.3% | 0 |
| November 2025 | 1 | 1 | 100.0% | 0 |
| March 2026 | 1 | 1 | 100.0% | 0 |
| June 2026 | 27 | 27 | 85.2% | 0 |
| July 2026 | 29 | 29 | 93.1% | 0 |