WN1981
WN1981 (Southwest Airlines) is a multi-stop service on 36 routes, busiest Denver to Boise. Of 701 departures recorded from October 2024 to July 2026, 70.4% left on time, according to the US BTS.
- On-time departures70.4%of 701 flights
- Average delay16.9 min
- July 202615▼ 61.5%vs July 2025
- Cancelled0.7%
- 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 | 45 | 26 | ▼ 42.2% |
| February | 47 | 20 | ▼ 57.4% |
| March | 36 | 23 | ▼ 36.1% |
| April | 45 | 21 | ▼ 53.3% |
| May | 55 | 23 | ▼ 58.2% |
| June | 40 | 13 | ▼ 67.5% |
| July | 39 | 15 | ▼ 61.5% |
| August | 33 | – | – |
| September | 30 | – | – |
| October | 69 | – | in progress |
| November | 18 | – | – |
| December | 15 | – | – |
| Year to date (Jan–Jul) | 307 | 141 | ▼ 54.1% |
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 | 84.1% | 84.0% | ▼ 0.1% |
| February | 72.3% | 75.0% | ▲ 3.7% |
| March | 75.0% | 45.5% | ▼ 39.4% |
| April | 88.6% | 52.4% | ▼ 40.9% |
| May | 54.6% | 21.7% | ▼ 60.1% |
| June | 67.5% | 7.7% | ▼ 88.6% |
| July | 64.1% | 42.9% | ▼ 33.1% |
| August | 66.7% | – | – |
| September | 90.0% | – | – |
| October | 87.0% | – | in progress |
| November | 66.7% | – | – |
| December | 26.7% | – | – |
| Year-to-date average (Jan–Jul) | 72.3% | 47.0% | ▼ 35.0% |
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 | 1 | 1 | 0.0% |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 3 | ▲ 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 99.3% 696
- Cancelled 0.7% 5
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 |
|---|---|---|---|---|
| DEN BOI Denver International Airport – Boise Air Terminal/Gowen Field | 1,042 | 4.0 min | 84.9% | 99 |
| BZN DEN Bozeman Yellowstone International Airport – Denver International Airport | 844 | 4.1 min | 90.0% | 50 |
| DEN SMF Denver International Airport – Sacramento International Airport | 1,460 | 12.2 min | 76.2% | 42 |
| DAL TUL Dallas Love Field – Tulsa International Airport | 383 | 22.7 min | 65.9% | 42 |
| BWI PHX Baltimore/Washington International Thurgood Marshall Airport – Phoenix Sky Harbor International Airport | 3,209 | 15.4 min | 75.8% | 33 |
| MIA DAL Miami International Airport – Dallas Love Field | 1,783 | 29.0 min | 68.8% | 32 |
| LAX DEN Los Angeles International Airport – Denver International Airport | 1,385 | 44.2 min | 25.0% | 32 |
| OAK SAN Oakland San Francisco Bay Airport – San Diego International Airport | 718 | 0.8 min | 96.7% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 27 | 27 | 88.9% | 0 |
| November 2024 | 31 | 31 | 83.9% | 0 |
| December 2024 | 30 | 30 | 90.0% | 0 |
| January 2025 | 45 | 44 | 84.1% | 1 |
| February 2025 | 47 | 47 | 72.3% | 0 |
| March 2025 | 36 | 36 | 75.0% | 0 |
| April 2025 | 45 | 44 | 88.6% | 1 |
| May 2025 | 55 | 55 | 54.6% | 0 |
| June 2025 | 40 | 40 | 67.5% | 0 |
| July 2025 | 39 | 39 | 64.1% | 0 |
| August 2025 | 33 | 33 | 66.7% | 0 |
| September 2025 | 30 | 30 | 90.0% | 0 |
| October 2025 | 69 | 69 | 87.0% | 0 |
| November 2025 | 18 | 18 | 66.7% | 0 |
| December 2025 | 15 | 15 | 26.7% | 0 |
| January 2026 | 26 | 25 | 84.0% | 1 |
| February 2026 | 20 | 20 | 75.0% | 0 |
| March 2026 | 23 | 22 | 45.5% | 1 |
| April 2026 | 21 | 21 | 52.4% | 0 |
| May 2026 | 23 | 23 | 21.7% | 0 |
| June 2026 | 13 | 13 | 7.7% | 0 |
| July 2026 | 15 | 14 | 42.9% | 1 |