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Flight Reliability

NK 354 · Spirit Airlines

Christiansted → Fort Lauderdale (STX–FLL)

64
A Little Dicey
WanderNerd Reliability Score
73%
Arrive within 15 minutes
16 min
Average arrival delay
2.8%
Cancelled
6 min early
Median arrival delay

Based on 181 historical flights. Data through May 2026.

What the data says

Morning flights do better here.

NK 354 departing between 9 AM–12 PM arrived on time 100% of the time, versus 67% between 3–6 PM.

Mondays have been rough.

NK 354 arrived on time 100% of the time on Tuesdays and just 62% on Mondays. That gap is worth planning around.

Recent months have been rougher.

NK 354 arrived on time 42% of the time over the last three months in the data, compared with 66% in the three months before that.

The breakdown

On-time by weekday
  • Mon62%(45 flights)
  • Tue100%(12 flights)
  • Wed79%(19 flights)
  • Thu93%(14 flights)
  • Fri65%(43 flights)
  • Sat72%(29 flights)
  • Sun77%(13 flights)
On-time by departure window
  • 9 AM–12 PM100%(10 flights)
  • 12–3 PM85%(34 flights)
  • 3–6 PM67%(131 flights)
On-time trend by month
30%
Mar

Jun 91% → Mar 30% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202591%23
July 202584%31
August 202593%30
September 202573%11
October 202554%13
November 202571%14
January 202654%13
February 202642%12
March 202630%10
Departures on time
68%
Diverted
0.6%
Flights flown
175
Months covered
11

Keep nerding

Based on 181 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.