WN599
WN599 (Southwest Airlines) is a multi-stop service on 37 routes, busiest Atlanta to Tampa. Of 544 departures recorded from October 2024 to March 2026, 82.5% left on time, according to the US BTS.
- On-time departures82.5%of 544 flights
- Average delay9.6 min
- March 20264▼ 92.2%vs March 2025
- Cancelled1.3%
- Legs flown under this number37
Recorded departures by month
All legs under this number combined; see the leg table.
The most recent periods15 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 30 | 31 | ▲ 3.3% |
| February | 28 | 25 | ▼ 10.7% |
| March | 51 | 4 | ▼ 92.2% |
| April | 35 | – | – |
| May | 31 | – | – |
| June | 30 | – | – |
| July | 31 | – | – |
| August | 35 | – | – |
| September | 34 | – | – |
| October | 31 | – | in progress |
| November | 32 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Mar) | 109 | 60 | ▼ 45.0% |
according to the US BTS · October 2024 → March 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 periods15 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 96.4% | 66.7% | ▼ 30.9% |
| February | 89.3% | 54.2% | ▼ 39.3% |
| March | 78.4% | 75.0% | ▼ 4.4% |
| April | 76.5% | – | – |
| May | 90.3% | – | – |
| June | 90.0% | – | – |
| July | 83.3% | – | – |
| August | 85.7% | – | – |
| September | 88.2% | – | – |
| October | 93.6% | – | in progress |
| November | 77.4% | – | – |
| December | 48.4% | – | – |
| Year-to-date average (Jan–Mar) | 88.1% | 65.3% | ▼ 25.9% |
according to the US BTS · October 2024 → March 2026
Average departure delay by month
according to the US BTS · October 2024 → March 2026
Cancelled departures by month
The most recent periods15 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 2 | 1 | ▼ 50.0% |
| February | 0 | 1 | – |
| March | 0 | 0 | – |
| April | 1 | – | – |
| May | 0 | – | – |
| June | 0 | – | – |
| July | 1 | – | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Mar) | 2 | 2 | 0.0% |
according to the US BTS · October 2024 → March 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 98.7% 537
- Cancelled 1.3% 7
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Mar 4, 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 |
|---|---|---|---|---|
| ATL TPA Hartsfield Jackson Atlanta International Airport – Tampa International Airport | 655 | 1.8 min | 93.3% | 77 |
| DTW BNA Detroit Metropolitan Wayne County Airport – Nashville International Airport | 735 | 7.2 min | 86.7% | 61 |
| RDU MCO Raleigh-Durham International Airport – Orlando International Airport | 862 | 3.1 min | 89.7% | 58 |
| LGA HOU LaGuardia Airport – William P. Hobby Airport | 2,295 | 22.4 min | 60.4% | 55 |
| BUF TPA Buffalo Niagara International Airport – Tampa International Airport | 1,699 | 8.0 min | 94.0% | 50 |
| DAL AMA Dallas Love Field – Rick Husband Amarillo International Airport | 520 | 13.9 min | 77.3% | 45 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 35 | 35 | 94.3% | 0 |
| November 2024 | 19 | 19 | 94.7% | 0 |
| December 2024 | 31 | 31 | 96.8% | 0 |
| January 2025 | 30 | 28 | 96.4% | 2 |
| February 2025 | 28 | 28 | 89.3% | 0 |
| March 2025 | 51 | 51 | 78.4% | 0 |
| April 2025 | 35 | 34 | 76.5% | 1 |
| May 2025 | 31 | 31 | 90.3% | 0 |
| June 2025 | 30 | 30 | 90.0% | 0 |
| July 2025 | 31 | 30 | 83.3% | 1 |
| August 2025 | 35 | 35 | 85.7% | 0 |
| September 2025 | 34 | 34 | 88.2% | 0 |
| October 2025 | 31 | 31 | 93.6% | 0 |
| November 2025 | 32 | 31 | 77.4% | 1 |
| December 2025 | 31 | 31 | 48.4% | 0 |
| January 2026 | 31 | 30 | 66.7% | 1 |
| February 2026 | 25 | 24 | 54.2% | 1 |
| March 2026 | 4 | 4 | 75.0% | 0 |