WN1838
WN1838 (Southwest Airlines) is a multi-stop service on 33 routes, busiest Chicago to Washington. Of 738 departures recorded from October 2024 to July 2026, 77.6% left on time, according to the US BTS.
- On-time departures77.6%of 738 flights
- Average delay11.2 min
- July 202630▼ 6.3%vs July 2025
- Cancelled1.4%
- Legs flown under this number33
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 | 47 | 33 | ▼ 29.8% |
| February | 33 | 32 | ▼ 3.0% |
| March | 38 | 17 | ▼ 55.3% |
| April | 32 | 36 | ▲ 12.5% |
| May | 30 | 46 | ▲ 53.3% |
| June | 30 | 30 | 0.0% |
| July | 32 | 30 | ▼ 6.3% |
| August | 38 | – | – |
| September | 39 | – | – |
| October | 31 | – | in progress |
| November | 33 | – | – |
| December | 33 | – | – |
| Year to date (Jan–Jul) | 242 | 224 | ▼ 7.4% |
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 | 84.4% | 87.1% | ▲ 3.2% |
| February | 78.8% | 81.3% | ▲ 3.1% |
| March | 68.4% | 52.9% | ▼ 22.6% |
| April | 78.1% | 83.3% | ▲ 6.7% |
| May | 83.3% | 63.0% | ▼ 24.3% |
| June | 80.0% | 50.0% | ▼ 37.5% |
| July | 67.7% | 80.0% | ▲ 18.1% |
| August | 86.8% | – | – |
| September | 89.7% | – | – |
| October | 96.8% | – | in progress |
| November | 63.3% | – | – |
| December | 62.5% | – | – |
| Year-to-date average (Jan–Jul) | 77.3% | 71.1% | ▼ 8.0% |
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 | 2 | 2 | 0.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 3 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 3 | 2 | ▼ 33.3% |
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 98.6% 728
- Cancelled 1.4% 10
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
99 of 9
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| MDW DCA Chicago Midway International Airport – Ronald Reagan Washington National Airport | 964 | 11.2 min | 72.6% | 75 |
| BWI ORD Baltimore/Washington International Thurgood Marshall Airport – Chicago O'Hare International Airport | 998 | 14.7 min | 75.0% | 61 |
| HOU AUS William P. Hobby Airport – Austin Bergstrom International Airport | 238 | 3.3 min | 83.0% | 55 |
| MCO PIT Orlando International Airport – Pittsburgh International Airport | 1,345 | 10.4 min | 72.0% | 50 |
| BWI MKE Baltimore/Washington International Thurgood Marshall Airport – General Mitchell International Airport | 1,030 | 4.9 min | 84.0% | 50 |
| EUG SAN Eugene Airport – San Diego International Airport | 1,370 | 11.4 min | 71.4% | 49 |
| STL DAL St. Louis Lambert International Airport – Dallas Love Field | 878 | 9.1 min | 76.2% | 43 |
| PVD MCO Rhode Island T. F. Green International Airport – Orlando International Airport | 1,728 | 17.7 min | 83.8% | 37 |
| MCO RDU Orlando International Airport – Raleigh-Durham International Airport | 862 | 1.9 min | 97.0% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 95.0% | 0 |
| November 2024 | 43 | 43 | 81.4% | 0 |
| December 2024 | 35 | 34 | 85.3% | 1 |
| January 2025 | 47 | 45 | 84.4% | 2 |
| February 2025 | 33 | 33 | 78.8% | 0 |
| March 2025 | 38 | 38 | 68.4% | 0 |
| April 2025 | 32 | 32 | 78.1% | 0 |
| May 2025 | 30 | 30 | 83.3% | 0 |
| June 2025 | 30 | 30 | 80.0% | 0 |
| July 2025 | 32 | 31 | 67.7% | 1 |
| August 2025 | 38 | 38 | 86.8% | 0 |
| September 2025 | 39 | 39 | 89.7% | 0 |
| October 2025 | 31 | 31 | 96.8% | 0 |
| November 2025 | 33 | 30 | 63.3% | 3 |
| December 2025 | 33 | 32 | 62.5% | 1 |
| January 2026 | 33 | 31 | 87.1% | 2 |
| February 2026 | 32 | 32 | 81.3% | 0 |
| March 2026 | 17 | 17 | 52.9% | 0 |
| April 2026 | 36 | 36 | 83.3% | 0 |
| May 2026 | 46 | 46 | 63.0% | 0 |
| June 2026 | 30 | 30 | 50.0% | 0 |
| July 2026 | 30 | 30 | 80.0% | 0 |