NK551
NK551 (Spirit Airlines) is a multi-stop service on 5 routes, busiest Orlando to Indianapolis. Of 270 departures recorded from January 2025 to April 2026, 74.8% left on time, according to the US BTS.
- On-time departures74.8%of 270 flights
- Average delay19.4 min
- April 202614▼ 48.1%vs April 2025
- Cancelled1.5%
- Legs flown under this number5
Recorded departures by month
Short series — NK551 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 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 23 | 31 | ▲ 34.8% |
| February | 28 | 27 | ▼ 3.6% |
| March | 30 | 31 | ▲ 3.3% |
| April | 27 | 14 | ▼ 48.1% |
| May | 5 | – | – |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 23 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Apr) | 108 | 103 | ▼ 4.6% |
according to the US BTS · January 2025 → April 2026
On-time departures by month
Short series — NK551 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 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 95.7% | 66.7% | ▼ 30.3% |
| February | 100.0% | 77.8% | ▼ 22.2% |
| March | 76.7% | 43.3% | ▼ 43.5% |
| April | 96.3% | 64.3% | ▼ 33.2% |
| May | 80.0% | – | – |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 78.3% | – | – |
| December | 51.7% | – | – |
| Year-to-date average (Jan–Apr) | 92.2% | 63.0% | ▼ 31.6% |
according to the US BTS · January 2025 → April 2026
Average departure delay by month
Short series — NK551 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 · January 2025 → April 2026
Cancelled departures by month
Short series — NK551 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 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 1 | – |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | – | – |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 0 | – | – |
| December | 2 | – | – |
| Year to date (Jan–Apr) | 0 | 2 |
according to the US BTS · January 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 98.5% 266
- Cancelled 1.5% 4
Share of all recorded flights in the period, all legs. · Jan 9, 2025 → Apr 14, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| MCO IND Orlando International Airport – Indianapolis International Airport | 1,336 | 23.7 min | 61.7% | 96 |
| IAH LAS George Bush Intercontinental Airport – Harry Reid International Airport | 1,963 | 13.8 min | 86.2% | 58 |
| LAS CMH Harry Reid International Airport – John Glenn Columbus International Airport | 2,843 | -5.4 min | 96.4% | 55 |
| EWR MCO Newark Liberty International Airport – Orlando International Airport | 1,511 | 63.7 min | 54.6% | 35 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| January 2025 | 23 | 23 | 95.7% | 0 |
| February 2025 | 28 | 28 | 100.0% | 0 |
| March 2025 | 30 | 30 | 76.7% | 0 |
| April 2025 | 27 | 27 | 96.3% | 0 |
| May 2025 | 5 | 5 | 80.0% | 0 |
| November 2025 | 23 | 23 | 78.3% | 0 |
| December 2025 | 31 | 29 | 51.7% | 2 |
| January 2026 | 31 | 30 | 66.7% | 1 |
| February 2026 | 27 | 27 | 77.8% | 0 |
| March 2026 | 31 | 30 | 43.3% | 1 |
| April 2026 | 14 | 14 | 64.3% | 0 |