WN1817
WN1817 (Southwest Airlines) is a multi-stop service on 30 routes, busiest Denver to Bozeman. Of 680 departures recorded from October 2024 to July 2026, 76.8% left on time, according to the US BTS.
- On-time departures76.8%of 680 flights
- Average delay11.5 min
- July 202631▲ 24.0%vs July 2025
- Cancelled0.4%
- Legs flown under this number30
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 | 10 | 91 | ▲ 810.0% |
| February | 17 | 71 | ▲ 317.6% |
| March | 21 | 39 | ▲ 85.7% |
| April | 25 | 30 | ▲ 20.0% |
| May | 25 | 32 | ▲ 28.0% |
| June | 28 | 30 | ▲ 7.1% |
| July | 25 | 31 | ▲ 24.0% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 28 | – | in progress |
| November | 27 | – | – |
| December | 29 | – | – |
| Year to date (Jan–Jul) | 151 | 324 | ▲ 114.6% |
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 | 55.6% | 83.5% | ▲ 50.3% |
| February | 70.6% | 94.3% | ▲ 33.6% |
| March | 90.5% | 94.9% | ▲ 4.9% |
| April | 84.0% | 76.7% | ▼ 8.7% |
| May | 56.0% | 59.4% | ▲ 6.0% |
| June | 50.0% | 90.0% | ▲ 80.0% |
| July | 25.0% | 93.6% | ▲ 274.2% |
| August | 64.5% | – | – |
| September | 86.7% | – | – |
| October | 67.9% | – | in progress |
| November | 70.4% | – | – |
| December | 72.4% | – | – |
| Year-to-date average (Jan–Jul) | 61.7% | 84.6% | ▲ 37.2% |
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 | 0 | – |
| July | 1 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 1 | ▼ 50.0% |
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 99.6% 677
- Cancelled 0.4% 3
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 |
|---|---|---|---|---|
| PHX MCO Phoenix Sky Harbor International Airport – Orlando International Airport | 2,969 | 7.6 min | 93.1% | 58 |
| DEN BZN Denver International Airport – Bozeman Yellowstone International Airport | 844 | 19.1 min | 63.8% | 58 |
| BWI MIA Baltimore/Washington International Thurgood Marshall Airport – Miami International Airport | 1,526 | 16.1 min | 79.0% | 57 |
| OKC BNA OKC Will Rogers World Airport – Nashville International Airport | 988 | 11.3 min | 69.4% | 49 |
| ABQ PHX Albuquerque International Sunport – Phoenix Sky Harbor International Airport | 527 | 0.5 min | 91.3% | 47 |
| PHX LGB Phoenix Sky Harbor International Airport – Long Beach International Airport | 570 | 6.2 min | 85.7% | 42 |
| PHX SAN Phoenix Sky Harbor International Airport – San Diego International Airport | 489 | 26.4 min | 54.3% | 35 |
| LAS ELP Harry Reid International Airport – El Paso International Airport | 938 | -0.8 min | 93.9% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 21 | 21 | 85.7% | 0 |
| November 2024 | 23 | 23 | 87.0% | 0 |
| December 2024 | 16 | 16 | 56.3% | 0 |
| January 2025 | 10 | 9 | 55.6% | 1 |
| February 2025 | 17 | 17 | 70.6% | 0 |
| March 2025 | 21 | 21 | 90.5% | 0 |
| April 2025 | 25 | 25 | 84.0% | 0 |
| May 2025 | 25 | 25 | 56.0% | 0 |
| June 2025 | 28 | 28 | 50.0% | 0 |
| July 2025 | 25 | 24 | 25.0% | 1 |
| August 2025 | 31 | 31 | 64.5% | 0 |
| September 2025 | 30 | 30 | 86.7% | 0 |
| October 2025 | 28 | 28 | 67.9% | 0 |
| November 2025 | 27 | 27 | 70.4% | 0 |
| December 2025 | 29 | 29 | 72.4% | 0 |
| January 2026 | 91 | 91 | 83.5% | 0 |
| February 2026 | 71 | 70 | 94.3% | 1 |
| March 2026 | 39 | 39 | 94.9% | 0 |
| April 2026 | 30 | 30 | 76.7% | 0 |
| May 2026 | 32 | 32 | 59.4% | 0 |
| June 2026 | 30 | 30 | 90.0% | 0 |
| July 2026 | 31 | 31 | 93.6% | 0 |