WN1228
WN1228 (Southwest Airlines) is a multi-stop service on 40 routes, busiest Las Vegas to Boise. Of 805 departures recorded from October 2024 to July 2026, 74.9% left on time, according to the US BTS.
- On-time departures74.9%of 805 flights
- Average delay14.2 min
- July 202650▲ 22.0%vs July 2025
- Cancelled1.6%
- Legs flown under this number40
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 | 51 | 33 | ▼ 35.3% |
| February | 35 | 28 | ▼ 20.0% |
| March | 43 | 31 | ▼ 27.9% |
| April | 21 | 33 | ▲ 57.1% |
| May | 13 | 36 | ▲ 176.9% |
| June | 35 | 45 | ▲ 28.6% |
| July | 41 | 50 | ▲ 22.0% |
| August | 27 | – | – |
| September | 26 | – | – |
| October | 19 | – | in progress |
| November | 75 | – | – |
| December | 57 | – | – |
| Year to date (Jan–Jul) | 239 | 256 | ▲ 7.1% |
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 | 86.0% | 78.8% | ▼ 8.4% |
| February | 88.6% | 88.9% | ▲ 0.4% |
| March | 69.1% | 71.0% | ▲ 2.8% |
| April | 81.0% | 75.0% | ▼ 7.4% |
| May | 92.3% | 63.9% | ▼ 30.8% |
| June | 100.0% | 44.4% | ▼ 55.6% |
| July | 92.7% | 56.0% | ▼ 39.6% |
| August | 74.1% | – | – |
| September | 73.1% | – | – |
| October | 72.2% | – | in progress |
| November | 59.4% | – | – |
| December | 71.9% | – | – |
| Year-to-date average (Jan–Jul) | 87.1% | 68.3% | ▼ 21.6% |
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 | 1 | 0 | ▼ 100.0% |
| April | 0 | 1 | – |
| May | 0 | 0 | – |
| June | 1 | 0 | ▼ 100.0% |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 1 | – | in progress |
| November | 6 | – | – |
| December | 0 | – | – |
| 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 98.4% 792
- Cancelled 1.6% 13
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 |
|---|---|---|---|---|
| SNA OAK John Wayne Orange County International Airport – Oakland San Francisco Bay Airport | 597 | -0.6 min | 96.7% | 61 |
| LAS BOI Harry Reid International Airport – Boise Air Terminal/Gowen Field | 837 | 1.2 min | 90.2% | 61 |
| SFO DEN San Francisco International Airport – Denver International Airport | 1,553 | 7.1 min | 90.7% | 55 |
| DEN COS Denver International Airport – City of Colorado Springs Municipal Airport | 117 | 21.7 min | 50.0% | 40 |
| PHX LAS Phoenix Sky Harbor International Airport – Harry Reid International Airport | 411 | 35.2 min | 50.0% | 38 |
| MDW TUL Chicago Midway International Airport – Tulsa International Airport | 938 | 16.5 min | 74.3% | 36 |
| MCO AUS Orlando International Airport – Austin Bergstrom International Airport | 1,596 | 27.2 min | 57.6% | 33 |
| ATL DEN Hartsfield Jackson Atlanta International Airport – Denver International Airport | 1,927 | 19.1 min | 66.7% | 33 |
| ABQ DAL Albuquerque International Sunport – Dallas Love Field | 933 | 11.3 min | 74.2% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 80.0% | 0 |
| November 2024 | 34 | 34 | 94.1% | 0 |
| December 2024 | 52 | 51 | 78.4% | 1 |
| January 2025 | 51 | 50 | 86.0% | 1 |
| February 2025 | 35 | 35 | 88.6% | 0 |
| March 2025 | 43 | 42 | 69.1% | 1 |
| April 2025 | 21 | 21 | 81.0% | 0 |
| May 2025 | 13 | 13 | 92.3% | 0 |
| June 2025 | 35 | 34 | 100.0% | 1 |
| July 2025 | 41 | 41 | 92.7% | 0 |
| August 2025 | 27 | 27 | 74.1% | 0 |
| September 2025 | 26 | 26 | 73.1% | 0 |
| October 2025 | 19 | 18 | 72.2% | 1 |
| November 2025 | 75 | 69 | 59.4% | 6 |
| December 2025 | 57 | 57 | 71.9% | 0 |
| January 2026 | 33 | 33 | 78.8% | 0 |
| February 2026 | 28 | 27 | 88.9% | 1 |
| March 2026 | 31 | 31 | 71.0% | 0 |
| April 2026 | 33 | 32 | 75.0% | 1 |
| May 2026 | 36 | 36 | 63.9% | 0 |
| June 2026 | 45 | 45 | 44.4% | 0 |
| July 2026 | 50 | 50 | 56.0% | 0 |