WN1666
WN1666 (Southwest Airlines) is a multi-stop service on 21 routes, busiest Oakland to Kahului. Of 591 departures recorded from October 2024 to July 2026, 76.2% left on time, according to the US BTS.
- On-time departures76.2%of 591 flights
- Average delay11.5 min
- July 202617▼ 10.5%vs July 2025
- Cancelled1.0%
- Legs flown under this number21
according to the US BTS · Oct 12, 2024 → Jul 29, 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 | 31 | 26 | ▼ 16.1% |
| February | 28 | 24 | ▼ 14.3% |
| March | 31 | 30 | ▼ 3.2% |
| April | 21 | 38 | ▲ 81.0% |
| May | 17 | 39 | ▲ 129.4% |
| June | 17 | 20 | ▲ 17.6% |
| July | 19 | 17 | ▼ 10.5% |
| August | 28 | – | – |
| September | 30 | – | – |
| October | 33 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 164 | 194 | ▲ 18.3% |
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 | 96.8% | 79.2% | ▼ 18.2% |
| February | 92.9% | 45.8% | ▼ 50.6% |
| March | 83.9% | 96.6% | ▲ 15.1% |
| April | 80.0% | 92.1% | ▲ 15.1% |
| May | 76.5% | 92.3% | ▲ 20.7% |
| June | 100.0% | 36.8% | ▼ 63.2% |
| July | 94.7% | 18.8% | ▼ 80.2% |
| August | 46.4% | – | – |
| September | 76.7% | – | – |
| October | 69.7% | – | in progress |
| November | 53.3% | – | – |
| December | 48.4% | – | – |
| Year-to-date average (Jan–Jul) | 89.2% | 65.9% | ▼ 26.1% |
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 | 0 | 2 | – |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 0 | 0 | – |
| June | 0 | 1 | – |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 5 | ▲ 400.0% |
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 99.0% 585
- Cancelled 1.0% 6
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 29, 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 |
|---|---|---|---|---|
| OAK OGG Oakland San Francisco Bay Airport – Kahului International Airport | 3,777 | 1.2 min | 91.1% | 123 |
| ONT DEN Ontario International Airport – Denver International Airport | 1,316 | 4.7 min | 87.9% | 58 |
| SEA MDW Seattle–Tacoma International Airport – Chicago Midway International Airport | 2,782 | 15.4 min | 61.4% | 57 |
| DEN TUL Denver International Airport – Tulsa International Airport | 870 | 13.0 min | 66.7% | 50 |
| DEN SAT Denver International Airport – San Antonio International Airport | 1,280 | 21.0 min | 53.3% | 45 |
| TPA PIT Tampa International Airport – Pittsburgh International Airport | 1,408 | 1.7 min | 97.1% | 34 |
| LAS LIH Harry Reid International Airport – Lihue Airport | 4,529 | 14.2 min | 75.8% | 33 |
| JAX BWI Jacksonville International Airport – Baltimore/Washington International Thurgood Marshall Airport | 1,068 | -3.4 min | 100.0% | 32 |
| BUR PHX Hollywood Burbank/Bob Hope Airport – Phoenix Sky Harbor International Airport | 593 | 15.2 min | 74.2% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 90.0% | 0 |
| November 2024 | 30 | 30 | 93.3% | 0 |
| December 2024 | 31 | 31 | 80.7% | 0 |
| January 2025 | 31 | 31 | 96.8% | 0 |
| February 2025 | 28 | 28 | 92.9% | 0 |
| March 2025 | 31 | 31 | 83.9% | 0 |
| April 2025 | 21 | 20 | 80.0% | 1 |
| May 2025 | 17 | 17 | 76.5% | 0 |
| June 2025 | 17 | 17 | 100.0% | 0 |
| July 2025 | 19 | 19 | 94.7% | 0 |
| August 2025 | 28 | 28 | 46.4% | 0 |
| September 2025 | 30 | 30 | 76.7% | 0 |
| October 2025 | 33 | 33 | 69.7% | 0 |
| November 2025 | 30 | 30 | 53.3% | 0 |
| December 2025 | 31 | 31 | 48.4% | 0 |
| January 2026 | 26 | 24 | 79.2% | 2 |
| February 2026 | 24 | 24 | 45.8% | 0 |
| March 2026 | 30 | 29 | 96.6% | 1 |
| April 2026 | 38 | 38 | 92.1% | 0 |
| May 2026 | 39 | 39 | 92.3% | 0 |
| June 2026 | 20 | 19 | 36.8% | 1 |
| July 2026 | 17 | 16 | 18.8% | 1 |