WN1823
WN1823 (Southwest Airlines) is a multi-stop service on 35 routes, busiest Denver to Las Vegas. Of 681 departures recorded from October 2024 to July 2026, 67.4% left on time, according to the US BTS.
- On-time departures67.4%of 681 flights
- Average delay18.0 min
- July 202628▼ 48.1%vs July 2025
- Cancelled0.9%
- Legs flown under this number35
according to the US BTS · Oct 14, 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 | 27 | 32 | ▲ 18.5% |
| February | 26 | 15 | ▼ 42.3% |
| March | 31 | 37 | ▲ 19.4% |
| April | 28 | 36 | ▲ 28.6% |
| May | 27 | 36 | ▲ 33.3% |
| June | 54 | 26 | ▼ 51.9% |
| July | 54 | 28 | ▼ 48.1% |
| August | 32 | – | – |
| September | 26 | – | – |
| October | 26 | – | in progress |
| November | 41 | – | – |
| December | 35 | – | – |
| Year to date (Jan–Jul) | 247 | 210 | ▼ 15.0% |
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 | 73.1% | 84.4% | ▲ 15.5% |
| February | 61.5% | 93.3% | ▲ 51.7% |
| March | 96.7% | 51.4% | ▼ 46.9% |
| April | 85.7% | 88.9% | ▲ 3.7% |
| May | 59.3% | 91.7% | ▲ 54.7% |
| June | 49.1% | 30.8% | ▼ 37.3% |
| July | 32.1% | 42.9% | ▲ 33.6% |
| August | 78.1% | – | – |
| September | 84.6% | – | – |
| October | 76.9% | – | in progress |
| November | 60.0% | – | – |
| December | 61.8% | – | – |
| Year-to-date average (Jan–Jul) | 65.3% | 69.0% | ▲ 5.7% |
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 | 0 | – |
| March | 1 | 0 | ▼ 100.0% |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 1 | 0 | ▼ 100.0% |
| July | 1 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 4 | 0 | ▼ 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 99.1% 675
- Cancelled 0.9% 6
Share of all recorded flights in the period, all legs. · Oct 14, 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 |
|---|---|---|---|---|
| DEN LAS Denver International Airport – Harry Reid International Airport | 1,009 | 18.8 min | 67.1% | 73 |
| MDW HOU Chicago Midway International Airport – William P. Hobby Airport | 1,510 | 33.7 min | 40.4% | 59 |
| DAL LAX Dallas Love Field – Los Angeles International Airport | 2,002 | -0.3 min | 94.7% | 57 |
| COS MDW City of Colorado Springs Municipal Airport – Chicago Midway International Airport | 1,473 | 9.1 min | 84.0% | 50 |
| AUS SAN Austin Bergstrom International Airport – San Diego International Airport | 1,871 | 17.8 min | 66.7% | 41 |
| PHX MDW Phoenix Sky Harbor International Airport – Chicago Midway International Airport | 2,319 | 4.2 min | 90.3% | 31 |
| BNA TUL Nashville International Airport – Tulsa International Airport | 826 | 8.7 min | 77.4% | 31 |
| STL OMA St. Louis Lambert International Airport – Eppley Airfield | 549 | 1.6 min | 93.1% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 14 | 14 | 71.4% | 0 |
| November 2024 | 24 | 24 | 87.5% | 0 |
| December 2024 | 26 | 26 | 76.9% | 0 |
| January 2025 | 27 | 26 | 73.1% | 1 |
| February 2025 | 26 | 26 | 61.5% | 0 |
| March 2025 | 31 | 30 | 96.7% | 1 |
| April 2025 | 28 | 28 | 85.7% | 0 |
| May 2025 | 27 | 27 | 59.3% | 0 |
| June 2025 | 54 | 53 | 49.1% | 1 |
| July 2025 | 54 | 53 | 32.1% | 1 |
| August 2025 | 32 | 32 | 78.1% | 0 |
| September 2025 | 26 | 26 | 84.6% | 0 |
| October 2025 | 26 | 26 | 76.9% | 0 |
| November 2025 | 41 | 40 | 60.0% | 1 |
| December 2025 | 35 | 34 | 61.8% | 1 |
| January 2026 | 32 | 32 | 84.4% | 0 |
| February 2026 | 15 | 15 | 93.3% | 0 |
| March 2026 | 37 | 37 | 51.4% | 0 |
| April 2026 | 36 | 36 | 88.9% | 0 |
| May 2026 | 36 | 36 | 91.7% | 0 |
| June 2026 | 26 | 26 | 30.8% | 0 |
| July 2026 | 28 | 28 | 42.9% | 0 |