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WanderNerd

Flight Reliability

NK 1491 · Spirit Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and NK 1491 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

72%
Arrive within 15 minutes
17 min
Average arrival delay
5.6%
Cancelled
1 min early
Median arrival delay

Based on 142 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon67%(18 flights)
  • Tue71%(17 flights)
  • Wed100%(18 flights)
  • Thu77%(22 flights)
  • Fri85%(20 flights)
  • Sat70%(20 flights)
  • Sun37%(19 flights)
On-time by departure window
  • 12–3 AM70%(10 flights)
  • 6–9 AM93%(29 flights)
  • 9 AM–12 PM54%(13 flights)
  • 12–3 PM68%(82 flights)
On-time trend by month
57%
Apr

Jul 96% → Apr 57% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
July 202596%23
August 202573%11
January 202670%23
February 202681%26
March 202659%27
April 202657%23
Departures on time
66%
Diverted
0%
Flights flown
134
Months covered
7

Based on 142 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.