NK521
NK521 (Spirit Airlines) is a multi-stop service on 4 routes, busiest Newark to Fort Lauderdale. Of 209 departures recorded from October 2024 to December 2025, 87.6% left on time, according to the US BTS.
- On-time departures87.6%of 209 flights
- Average delay3.7 min
- December 20253▼ 89.7%vs December 2024
- Cancelled0.0%
- Legs flown under this number4
Recorded departures by month
Short series — NK521 has only 10 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 periods10 periods
| Period | Departures 2024 | Departures 2025 | Change vs last year |
|---|---|---|---|
| January | – | 30 | – |
| February | – | 28 | – |
| March | – | 17 | – |
| April | – | 27 | – |
| May | – | 4 | – |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | 20 | – | – |
| November | 29 | 22 | ▼ 24.1% |
| December | 29 | 3 | ▼ 89.7% |
according to the US BTS · October 2024 → December 2025
On-time departures by month
Short series — NK521 has only 10 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 periods10 periods
| Period | On time 2024 | On time 2025 | Change vs last year |
|---|---|---|---|
| January | – | 93.3% | – |
| February | – | 100.0% | – |
| March | – | 76.5% | – |
| April | – | 77.8% | – |
| May | – | 75.0% | – |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | 80.0% | – | – |
| November | 100.0% | 72.7% | ▼ 27.3% |
| December | 96.6% | 33.3% | ▼ 65.5% |
according to the US BTS · October 2024 → December 2025
Average departure delay by month
Short series — NK521 has only 10 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 → December 2025
Cancelled departures by month
Short series — NK521 has only 10 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
The most recent periods10 periods
| Period | Cancelled 2024 | Cancelled 2025 | Change vs last year |
|---|---|---|---|
| January | – | 0 | – |
| February | – | 0 | – |
| March | – | 0 | – |
| April | – | 0 | – |
| May | – | 0 | – |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | 0 | – | – |
| November | 0 | 0 | – |
| December | 0 | 0 | – |
according to the US BTS · October 2024 → December 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 100.0% 209
- Cancelled 0.0% 0
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Dec 3, 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 |
|---|---|---|---|---|
| EWR FLL Newark Liberty International Airport – Fort Lauderdale Hollywood International Airport | 1,717 | 1.1 min | 94.1% | 85 |
| CMH MCO John Glenn Columbus International Airport – Orlando International Airport | 1,295 | -2.3 min | 96.4% | 55 |
| DTW LAX Detroit Metropolitan Wayne County Airport – Los Angeles International Airport | 3,178 | 9.1 min | 75.0% | 44 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 80.0% | 0 |
| November 2024 | 29 | 29 | 100.0% | 0 |
| December 2024 | 29 | 29 | 96.6% | 0 |
| January 2025 | 30 | 30 | 93.3% | 0 |
| February 2025 | 28 | 28 | 100.0% | 0 |
| March 2025 | 17 | 17 | 76.5% | 0 |
| April 2025 | 27 | 27 | 77.8% | 0 |
| May 2025 | 4 | 4 | 75.0% | 0 |
| November 2025 | 22 | 22 | 72.7% | 0 |
| December 2025 | 3 | 3 | 33.3% | 0 |