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WanderNerd

Flight Reliability

NK 166 · Spirit Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and NK 166 moved between routes during this period. Numbers below combine all of them, so treat them as background, not a verdict. For a cleaner answer, check the route you are actually flying.

Combined across all its routes

49%
Arrive within 15 minutes
36 min
Average arrival delay
8.5%
Cancelled
21 min
Median arrival delay

Based on 117 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon69%(13 flights)
  • Tue33%(12 flights)
  • Wed89%(18 flights)
  • Thu44%(18 flights)
  • Fri33%(15 flights)
  • Sat33%(15 flights)
  • Sun31%(16 flights)
On-time by departure window
  • 9 AM–12 PM57%(14 flights)
  • 3–6 PM(5 flights)
  • 6–9 PM44%(88 flights)
On-time trend by month
42%
Apr

Dec 54% → Apr 42% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
December 202554%28
January 202678%18
February 202655%20
March 202624%29
April 202642%12
Departures on time
50%
Diverted
0%
Flights flown
107
Months covered
5

Based on 117 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.