WN3540
WN3540 (Southwest Airlines) is a multi-stop service on 23 routes, busiest Phoenix to Portland. Of 493 departures recorded from October 2024 to July 2026, 66.2% left on time, according to the US BTS.
- On-time departures66.2%of 493 flights
- Average delay21.6 min
- July 202626▲ 23.8%vs July 2025
- Cancelled1.0%
- Legs flown under this number23
Recorded departures by month
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 | 29 | 5 | ▼ 82.8% |
| February | 36 | 10 | ▼ 72.2% |
| March | 32 | 47 | ▲ 46.9% |
| April | 27 | 13 | ▼ 51.9% |
| May | 25 | 5 | ▼ 80.0% |
| June | 24 | 23 | ▼ 4.2% |
| July | 21 | 26 | ▲ 23.8% |
| August | 12 | – | – |
| September | 8 | – | – |
| October | 30 | – | in progress |
| November | 29 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 194 | 129 | ▼ 33.5% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
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 | 86.2% | 60.0% | ▼ 30.4% |
| February | 77.8% | 80.0% | ▲ 2.9% |
| March | 75.0% | 45.7% | ▼ 39.1% |
| April | 81.5% | 46.2% | ▼ 43.4% |
| May | 80.0% | 60.0% | ▼ 25.0% |
| June | 82.6% | 34.8% | ▼ 57.9% |
| July | 61.9% | 26.9% | ▼ 56.5% |
| August | 66.7% | – | – |
| September | 75.0% | – | – |
| October | 69.0% | – | in progress |
| November | 59.3% | – | – |
| December | 58.1% | – | – |
| Year-to-date average (Jan–Jul) | 77.9% | 50.5% | ▼ 35.1% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 1 | 0 | ▼ 100.0% |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 1 | – | in progress |
| November | 2 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 1 | 0.0% |
according to the US BTS · October 2024 → July 2026
This is a historical record of departures already flown, not a forecast for your flight.
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 99.0% 488
- Cancelled 1.0% 5
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
6| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| PHX PDX Phoenix Sky Harbor International Airport – Portland International Airport | 1,625 | 7.6 min | 82.4% | 108 |
| BWI ORF Baltimore/Washington International Thurgood Marshall Airport – Norfolk International Airport | 257 | 6.3 min | 85.7% | 49 |
| SJC DAL Mineta San Jose International Airport – Dallas Love Field | 2,329 | 18.8 min | 68.2% | 45 |
| SAN SJC San Diego International Airport – Mineta San Jose International Airport | 671 | 33.7 min | 19.1% | 42 |
| DAL SLC Dallas Love Field – Salt Lake City International Airport | 1,607 | 26.7 min | 66.7% | 33 |
| LGA MDW LaGuardia Airport – Chicago Midway International Airport | 1,164 | 24.3 min | 70.0% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 13 | 13 | 84.6% | 0 |
| November 2024 | 25 | 25 | 76.0% | 0 |
| December 2024 | 22 | 22 | 81.8% | 0 |
| January 2025 | 29 | 29 | 86.2% | 0 |
| February 2025 | 36 | 36 | 77.8% | 0 |
| March 2025 | 32 | 32 | 75.0% | 0 |
| April 2025 | 27 | 27 | 81.5% | 0 |
| May 2025 | 25 | 25 | 80.0% | 0 |
| June 2025 | 24 | 23 | 82.6% | 1 |
| July 2025 | 21 | 21 | 61.9% | 0 |
| August 2025 | 12 | 12 | 66.7% | 0 |
| September 2025 | 8 | 8 | 75.0% | 0 |
| October 2025 | 30 | 29 | 69.0% | 1 |
| November 2025 | 29 | 27 | 59.3% | 2 |
| December 2025 | 31 | 31 | 58.1% | 0 |
| January 2026 | 5 | 5 | 60.0% | 0 |
| February 2026 | 10 | 10 | 80.0% | 0 |
| March 2026 | 47 | 46 | 45.7% | 1 |
| April 2026 | 13 | 13 | 46.2% | 0 |
| May 2026 | 5 | 5 | 60.0% | 0 |
| June 2026 | 23 | 23 | 34.8% | 0 |
| July 2026 | 26 | 26 | 26.9% | 0 |