NK999
NK999 (Spirit Airlines) is a multi-stop service on 4 routes, busiest Miami to Detroit. Of 139 departures recorded from April 2025 to April 2026, 67.2% left on time, according to the US BTS.
- On-time departures67.2%of 139 flights
- Average delay17.7 min
- April 202614▼ 36.4%vs April 2025
- Cancelled1.4%
- Legs flown under this number4
Recorded departures by month
Short series — NK999 has only 7 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 periods7 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | 18 | – |
| February | – | 28 | – |
| March | – | 31 | – |
| April | 22 | 14 | ▼ 36.4% |
| May | 6 | – | – |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | 20 | – | – |
according to the US BTS · April 2025 → April 2026
On-time departures by month
Short series — NK999 has only 7 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 periods7 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | 55.6% | – |
| February | – | 63.0% | – |
| March | – | 63.3% | – |
| April | 90.9% | 78.6% | ▼ 13.6% |
| May | 66.7% | – | – |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | 55.0% | – | – |
according to the US BTS · April 2025 → April 2026
Average departure delay by month
Short series — NK999 has only 7 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 · April 2025 → April 2026
Cancelled departures by month
Short series — NK999 has only 7 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
The most recent periods7 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | 0 | – |
| February | – | 1 | – |
| March | – | 1 | – |
| April | 0 | 0 | – |
| May | 0 | – | – |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | 0 | – | – |
according to the US BTS · April 2025 → April 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 98.6% 137
- Cancelled 1.4% 2
Share of all recorded flights in the period, all legs. · Apr 9, 2025 → Apr 14, 2026
Legs flown under this number
1| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| MIA DTW Miami International Airport – Detroit Metropolitan Wayne County Airport | 1,847 | 20.0 min | 64.3% | 86 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| April 2025 | 22 | 22 | 90.9% | 0 |
| May 2025 | 6 | 6 | 66.7% | 0 |
| December 2025 | 20 | 20 | 55.0% | 0 |
| January 2026 | 18 | 18 | 55.6% | 0 |
| February 2026 | 28 | 27 | 63.0% | 1 |
| March 2026 | 31 | 30 | 63.3% | 1 |
| April 2026 | 14 | 14 | 78.6% | 0 |