WN518
WN518 (Southwest Airlines) is a multi-stop service on 30 routes, busiest Sacramento to San Diego. Of 675 departures recorded from October 2024 to July 2026, 81.1% left on time, according to the US BTS.
- On-time departures81.1%of 675 flights
- Average delay8.9 min
- July 202631▲ 0.0%vs July 2025
- Cancelled1.5%
- Legs flown under this number30
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 | 31 | 31 | 0.0% |
| February | 27 | 28 | ▲ 3.7% |
| March | 37 | 31 | ▼ 16.2% |
| April | 32 | 30 | ▼ 6.3% |
| May | 31 | 30 | ▼ 3.2% |
| June | 30 | 30 | 0.0% |
| July | 31 | 31 | 0.0% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 32 | – | – |
| December | 33 | – | – |
| Year to date (Jan–Jul) | 219 | 211 | ▼ 3.7% |
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 | 80.0% | 65.5% | ▼ 18.1% |
| February | 74.1% | 67.9% | ▼ 8.4% |
| March | 89.2% | 70.0% | ▼ 21.5% |
| April | 87.5% | 93.3% | ▲ 6.7% |
| May | 83.9% | 83.3% | ▼ 0.6% |
| June | 83.3% | 96.7% | ▲ 16.0% |
| July | 96.6% | 93.6% | ▼ 3.1% |
| August | 90.3% | – | – |
| September | 86.7% | – | – |
| October | 67.7% | – | in progress |
| November | 81.3% | – | – |
| December | 68.8% | – | – |
| Year-to-date average (Jan–Jul) | 84.9% | 81.5% | ▼ 4.1% |
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 | 1 | 2 | ▲ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 2 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 3 | 3 | 0.0% |
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 98.5% 665
- Cancelled 1.5% 10
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 |
|---|---|---|---|---|
| SMF SAN Sacramento International Airport – San Diego International Airport | 773 | 14.6 min | 74.7% | 79 |
| DTW MDW Detroit Metropolitan Wayne County Airport – Chicago Midway International Airport | 367 | 2.4 min | 93.2% | 61 |
| LAS MCO Harry Reid International Airport – Orlando International Airport | 3,276 | 6.2 min | 81.0% | 58 |
| IND TPA Indianapolis International Airport – Tampa International Airport | 1,351 | 1.4 min | 94.8% | 58 |
| BUR SJC Hollywood Burbank/Bob Hope Airport – Mineta San Jose International Airport | 477 | 3.3 min | 87.9% | 58 |
| BNA HOU Nashville International Airport – William P. Hobby Airport | 1,078 | 13.5 min | 66.0% | 55 |
| OKC DCA OKC Will Rogers World Airport – Ronald Reagan Washington National Airport | 1,859 | -1.1 min | 95.2% | 42 |
| RSW MKE Southwest Florida International Airport – General Mitchell International Airport | 1,908 | 36.8 min | 51.4% | 36 |
| JAN HOU Jackson-Medgar Wiley Evers International Airport – William P. Hobby Airport | 578 | -3.7 min | 97.0% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 28 | 28 | 75.0% | 0 |
| November 2024 | 31 | 31 | 64.5% | 0 |
| December 2024 | 29 | 26 | 80.8% | 3 |
| January 2025 | 31 | 30 | 80.0% | 1 |
| February 2025 | 27 | 27 | 74.1% | 0 |
| March 2025 | 37 | 37 | 89.2% | 0 |
| April 2025 | 32 | 32 | 87.5% | 0 |
| May 2025 | 31 | 31 | 83.9% | 0 |
| June 2025 | 30 | 30 | 83.3% | 0 |
| July 2025 | 31 | 29 | 96.6% | 2 |
| August 2025 | 31 | 31 | 90.3% | 0 |
| September 2025 | 30 | 30 | 86.7% | 0 |
| October 2025 | 31 | 31 | 67.7% | 0 |
| November 2025 | 32 | 32 | 81.3% | 0 |
| December 2025 | 33 | 32 | 68.8% | 1 |
| January 2026 | 31 | 29 | 65.5% | 2 |
| February 2026 | 28 | 28 | 67.9% | 0 |
| March 2026 | 31 | 30 | 70.0% | 1 |
| April 2026 | 30 | 30 | 93.3% | 0 |
| May 2026 | 30 | 30 | 83.3% | 0 |
| June 2026 | 30 | 30 | 96.7% | 0 |
| July 2026 | 31 | 31 | 93.6% | 0 |