OnTimeRoutes
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Spirit Airlines IAH to DTW on-time performance

Spirit Airlines nonstop flights from Houston to Detroit · Aug 2025 – Jul 2026

On-time arrivals
76%
arrived < 15 min late
Cancelled
2.8%
10 flights
Avg arrival delay
19 min
77 min when late
Rank on route
#3 of 5
route average 79% on time

Key facts

  • Spirit Airlines flights on IAH to DTW arrived on time 76% of the time in Aug 2025 – Jul 2026.
  • 2.8% were cancelled, and 6% arrived an hour or more late.
  • That ranks #3 of 5 airlines on this route, which averaged 79% on time overall.
  • The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (50%).

On-time trend by month

0%50%100%July 2025: 78.4% on time, 0.0% cancelledJul ’25August 2025: 80.6% on time, 0.0% cancelledAug ’25September 2025: 89.8% on time, 0.0% cancelledSep ’25October 2025: 91.7% on time, 0.0% cancelledOct ’25November 2025: 68.8% on time, 2.0% cancelledNov ’25December 2025: 68.8% on time, 3.0% cancelledDec ’25January 2026: 70.8% on time, 4.0% cancelledJan ’26February 2026: 65.2% on time, 4.2% cancelledFeb ’26March 2026: 72.7% on time, 13.2% cancelledMar ’26April 2026: 55.6% on time, 3.6% cancelledApr ’26May 2026: 0.0% on time, 0.0% cancelledMay ’26
On-time arrival rate by month. Hover a bar for exact figures.

Why this airline's flights were late

  • Airline (crew, maintenance, cleaning, fueling)50%
  • Extreme weather17%
  • Air traffic control & airport congestion17%
  • Late-arriving aircraft15%
  • Security0%

Other airlines on IAH to DTW

Full IAH to DTW comparison →
Spirit Airlines on-time record across all routes →

357 Spirit Airlines flights tracked on this route; 10 cancelled, 0 diverted.

Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.