Flight Reliability
NK 251 · Spirit Airlines
Indianapolis → Newark (IND–EWR)83% of its flights flew this route. The rest (FLL–ACY) are included in these numbers.
- 89%
- Arrive within 15 minutes
- 7 min early
- Average arrival delay
- 10.9%
- Cancelled
- 12 min early
- Median arrival delay
Based on 101 historical flights. Data through May 2026.
What the data says
Morning flights do better here.
NK 251 departing between 6–9 AM arrived on time 92% of the time, versus 75% between 6–9 PM.
Mondays have been rough.
NK 251 arrived on time 100% of the time on Tuesdays and just 67% on Mondays. That gap is worth planning around.
A bit ahead of the IND–EWR route.
NK 251 arrived on time 89% of the time, versus 84% across the IND–EWR route.
Better than the Spirit Airlines network average.
NK 251 arrived on time 89% of the time, versus 74% across the Spirit Airlines network.
The breakdown
- Mon67%(12 flights)
- Tue100%(12 flights)
- Wed93%(14 flights)
- Thu83%(12 flights)
- Fri100%(13 flights)
- Sat92%(13 flights)
- Sun85%(13 flights)
- 6–9 AM92%(73 flights)
- 6–9 PM75%(16 flights)
Jan 86% → Apr 86% on time
| Month | On-time percentage | Flights |
|---|---|---|
| January 2026 | 86% | 22 |
| February 2026 | 93% | 15 |
| March 2026 | 92% | 24 |
| April 2026 | 86% | 28 |
- Departures on time
- 88%
- Diverted
- 1.0%
- Flights flown
- 89
- Months covered
- 4
Same route, other flights
Keep nerding
Based on 101 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.