WN3840
WN3840 (Southwest Airlines) is a multi-stop service on 30 routes, busiest Phoenix to Kahului. Of 478 departures recorded from October 2024 to July 2026, 71.1% left on time, according to the US BTS.
- On-time departures71.1%of 478 flights
- Average delay14.6 min
- July 20266▼ 68.4%vs July 2025
- Cancelled1.7%
- Legs flown under this number30
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods17 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 28 | 4 | ▼ 85.7% |
| February | 26 | – | – |
| March | 51 | 27 | ▼ 47.1% |
| April | 47 | 30 | ▼ 36.2% |
| May | 42 | 31 | ▼ 26.2% |
| June | 20 | 19 | ▼ 5.0% |
| July | 19 | 6 | ▼ 68.4% |
| August | 2 | – | – |
| September | – | – | – |
| October | 43 | – | in progress |
| November | 19 | – | – |
| December | 17 | – | – |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Months without data are left blank.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods17 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 74.1% | 50.0% | ▼ 32.5% |
| February | 92.3% | – | – |
| March | 71.4% | 68.0% | ▼ 4.8% |
| April | 70.2% | 66.7% | ▼ 5.0% |
| May | 66.7% | 74.2% | ▲ 11.3% |
| June | 80.0% | 84.2% | ▲ 5.3% |
| July | 73.7% | 83.3% | ▲ 13.1% |
| August | 50.0% | – | – |
| September | – | – | – |
| October | 60.5% | – | in progress |
| November | 79.0% | – | – |
| December | 64.7% | – | – |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods17 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 0 | ▼ 100.0% |
| February | 0 | – | – |
| March | 2 | 2 | 0.0% |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | – | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 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 98.3% 470
- Cancelled 1.7% 8
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 25, 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 OGG Phoenix Sky Harbor International Airport – Kahului International Airport | 4,573 | 10.5 min | 74.1% | 58 |
| LAS MDW Harry Reid International Airport – Chicago Midway International Airport | 2,442 | 16.6 min | 67.2% | 58 |
| MIA DAL Miami International Airport – Dallas Love Field | 1,783 | 4.6 min | 87.5% | 57 |
| MSY AUS Louis Armstrong New Orleans International Airport – Austin Bergstrom International Airport | 712 | 9.5 min | 68.6% | 35 |
| PHX MSP Phoenix Sky Harbor International Airport – Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field | 2,051 | 13.4 min | 76.5% | 34 |
| BWI TPA Baltimore/Washington International Thurgood Marshall Airport – Tampa International Airport | 1,358 | 23.8 min | 54.8% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 11 | 9 | 100.0% | 2 |
| November 2024 | 16 | 15 | 60.0% | 1 |
| December 2024 | 20 | 20 | 50.0% | 0 |
| January 2025 | 28 | 27 | 74.1% | 1 |
| February 2025 | 26 | 26 | 92.3% | 0 |
| March 2025 | 51 | 49 | 71.4% | 2 |
| April 2025 | 47 | 47 | 70.2% | 0 |
| May 2025 | 42 | 42 | 66.7% | 0 |
| June 2025 | 20 | 20 | 80.0% | 0 |
| July 2025 | 19 | 19 | 73.7% | 0 |
| August 2025 | 2 | 2 | 50.0% | 0 |
| October 2025 | 43 | 43 | 60.5% | 0 |
| November 2025 | 19 | 19 | 79.0% | 0 |
| December 2025 | 17 | 17 | 64.7% | 0 |
| January 2026 | 4 | 4 | 50.0% | 0 |
| March 2026 | 27 | 25 | 68.0% | 2 |
| April 2026 | 30 | 30 | 66.7% | 0 |
| May 2026 | 31 | 31 | 74.2% | 0 |
| June 2026 | 19 | 19 | 84.2% | 0 |
| July 2026 | 6 | 6 | 83.3% | 0 |