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Flight Reliability

NK 2021 · Spirit Airlines

Detroit → Tampa (DTW–TPA)91% of its flights flew this route. The rest (SAN–LAS) are included in these numbers.

35
Bring Snacks
WanderNerd Reliability Score
73%
Arrive within 15 minutes
9 min
Average arrival delay
10.6%
Cancelled
3 min early
Median arrival delay

Based on 123 historical flights. Data through May 2026.

What the data says

Morning-you made the right choice.

NK 2021 departing between 6–9 AM arrived on time 76% of the time, versus 60% between 6–9 PM.

Mondays have been rough.

NK 2021 arrived on time 81% of the time on Sundays and just 57% on Mondays. That gap is worth planning around.

A bit behind the DTW–TPA route.

NK 2021 arrived on time 73% of the time, versus 79% across the DTW–TPA route.

Keep a backup plan handy.

NK 2021 was cancelled 10.6% of the time. Typical for U.S. flights is around 1–2%.

The breakdown

On-time by weekday
  • Mon57%(14 flights)
  • Tue80%(15 flights)
  • Wed73%(15 flights)
  • Thu67%(18 flights)
  • Fri71%(17 flights)
  • Sat79%(14 flights)
  • Sun81%(16 flights)
On-time by departure window
  • 3–6 AM—(5 flights)
  • 6–9 AM76%(63 flights)
  • 9 AM–12 PM65%(31 flights)
  • 6–9 PM60%(10 flights)
On-time trend by month
50%
Apr

Jun 60% → Apr 50% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202560%10
August 202569%13
January 202674%23
February 202682%22
March 202681%26
April 202650%14
Departures on time
78%
Diverted
0.8%
Flights flown
109
Months covered
7

Same route, other flights

Keep nerding

Based on 123 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.