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WanderNerd

Flight Reliability

NK 1687 · Spirit Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and NK 1687 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

60%
Arrive within 15 minutes
21 min
Average arrival delay
2.7%
Cancelled
3 min
Median arrival delay

Based on 110 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon63%(16 flights)
  • Tue(5 flights)
  • Wed(8 flights)
  • Thu41%(22 flights)
  • Fri59%(17 flights)
  • Sat77%(17 flights)
  • Sun50%(22 flights)
On-time by departure window
  • 9 AM–12 PM100%(16 flights)
  • 3–6 PM(6 flights)
  • 6–9 PM49%(85 flights)
On-time trend by month
69%
Apr

Oct 100% → Apr 69% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
October 2025100%21
January 202656%18
February 202650%20
March 202644%25
April 202669%13
Departures on time
39%
Diverted
0%
Flights flown
107
Months covered
8

Based on 110 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.