NK1521
NK1521 (Spirit Airlines) is a multi-stop service on 6 routes, busiest Indianapolis to Newark. Of 149 departures recorded from October 2024 to January 2026, 67.1% left on time, according to the US BTS.
- On-time departures67.1%of 149 flights
- Average delay28.7 min
- January 20267
- Cancelled4.0%
- Legs flown under this number6
Recorded departures by month
Short series — NK1521 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 periods8 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | 7 | – |
| February | – | – | – |
| March | 2 | – | – |
| April | 27 | – | – |
| May | 5 | – | – |
| June | – | – | – |
| July | 23 | – | – |
| August | 12 | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 16 | – | – |
| December | 25 | – | – |
according to the US BTS · October 2024 → January 2026
On-time departures by month
Short series — NK1521 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 periods8 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | 50.0% | – |
| February | – | – | – |
| March | 50.0% | – | – |
| April | 42.3% | – | – |
| May | 0.0% | – | – |
| June | – | – | – |
| July | 82.6% | – | – |
| August | 66.7% | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 73.3% | – | – |
| December | 62.5% | – | – |
according to the US BTS · October 2024 → January 2026
Average departure delay by month
Short series — NK1521 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 → January 2026
Cancelled departures by month
Short series — NK1521 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 periods8 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | 1 | – |
| February | – | – | – |
| March | 0 | – | – |
| April | 1 | – | – |
| May | 2 | – | – |
| June | – | – | – |
| July | 0 | – | – |
| August | 0 | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 1 | – | – |
| December | 1 | – | – |
according to the US BTS · October 2024 → January 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 96.0% 143
- Cancelled 4.0% 6
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Jan 7, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
2| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| IND EWR Indianapolis International Airport – Newark Liberty International Airport | 1,035 | 10.9 min | 77.1% | 35 |
| MSY EWR Louis Armstrong New Orleans International Airport – Newark Liberty International Airport | 1,878 | 68.0 min | 38.7% | 34 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 11 | 11 | 72.7% | 0 |
| November 2024 | 18 | 18 | 94.4% | 0 |
| December 2024 | 3 | 3 | 100.0% | 0 |
| March 2025 | 2 | 2 | 50.0% | 0 |
| April 2025 | 27 | 26 | 42.3% | 1 |
| May 2025 | 5 | 3 | 0.0% | 2 |
| July 2025 | 23 | 23 | 82.6% | 0 |
| August 2025 | 12 | 12 | 66.7% | 0 |
| November 2025 | 16 | 15 | 73.3% | 1 |
| December 2025 | 25 | 24 | 62.5% | 1 |
| January 2026 | 7 | 6 | 50.0% | 1 |