NK439
NK439 (Spirit Airlines) is a multi-stop service on 6 routes, busiest Las Vegas to Reno. Of 253 departures recorded from October 2024 to November 2025, 77.1% left on time, according to the US BTS.
- On-time departures77.1%of 253 flights
- Average delay11.3 min
- November 20251▼ 96.4%vs November 2024
- Cancelled1.6%
- Legs flown under this number6
Recorded departures by month
Short series — NK439 has only 11 months so far. Enough to show the level now, not enough to read a trend.
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods11 periods
| Period | Departures 2024 | Departures 2025 | Change vs last year |
|---|---|---|---|
| January | – | 31 | – |
| February | – | 28 | – |
| March | – | 31 | – |
| April | – | 27 | – |
| May | – | 5 | – |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | 27 | – |
| October | 19 | 31 | ▲ 63.2% |
| November | 28 | 1 | ▼ 96.4% |
| December | 25 | – | – |
according to the US BTS · October 2024 → November 2025
On-time departures by month
Short series — NK439 has only 11 months so far. Enough to show the level now, not enough to read a trend.
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 periods11 periods
| Period | On time 2024 | On time 2025 | Change vs last year |
|---|---|---|---|
| January | – | 83.9% | – |
| February | – | 89.3% | – |
| March | – | 76.7% | – |
| April | – | 76.9% | – |
| May | – | 100.0% | – |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | 73.1% | – |
| October | 79.0% | 67.7% | ▼ 14.2% |
| November | 78.6% | 100.0% | ▲ 27.3% |
| December | 64.0% | – | – |
according to the US BTS · October 2024 → November 2025
Average departure delay by month
Short series — NK439 has only 11 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
according to the US BTS · October 2024 → November 2025
Cancelled departures by month
Short series — NK439 has only 11 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
The most recent periods11 periods
| Period | Cancelled 2024 | Cancelled 2025 | Change vs last year |
|---|---|---|---|
| January | – | 0 | – |
| February | – | 0 | – |
| March | – | 1 | – |
| April | – | 1 | – |
| May | – | 1 | – |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | 1 | – |
| October | 0 | 0 | – |
| November | 0 | 0 | – |
| December | 0 | – | – |
according to the US BTS · October 2024 → November 2025
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 98.4% 249
- Cancelled 1.6% 4
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Nov 1, 2025
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
3| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| LAS RNO Harry Reid International Airport – Reno Tahoe International Airport | 556 | 9.9 min | 76.3% | 80 |
| MCO EWR Orlando International Airport – Newark Liberty International Airport | 1,511 | 14.6 min | 70.7% | 59 |
| FLL DTW Fort Lauderdale Hollywood International Airport – Detroit Metropolitan Wayne County Airport | 1,819 | 10.5 min | 83.6% | 55 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 19 | 19 | 79.0% | 0 |
| November 2024 | 28 | 28 | 78.6% | 0 |
| December 2024 | 25 | 25 | 64.0% | 0 |
| January 2025 | 31 | 31 | 83.9% | 0 |
| February 2025 | 28 | 28 | 89.3% | 0 |
| March 2025 | 31 | 30 | 76.7% | 1 |
| April 2025 | 27 | 26 | 76.9% | 1 |
| May 2025 | 5 | 4 | 100.0% | 1 |
| September 2025 | 27 | 26 | 73.1% | 1 |
| October 2025 | 31 | 31 | 67.7% | 0 |
| November 2025 | 1 | 1 | 100.0% | 0 |