OnTimeRoutes
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Spirit Airlines SJU to IAH on-time performance

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

On-time arrivals
68%
arrived < 15 min late
Cancelled
1.7%
1 flights
Avg arrival delay
24 min
74 min when late
Rank on route
#2 of 2
route average 88% on time

Key facts

  • Spirit Airlines flights on SJU to IAH arrived on time 68% of the time in Aug 2025 – Jul 2026.
  • 1.7% were cancelled, and 16% arrived an hour or more late.
  • That ranks #2 of 2 airlines on this route, which averaged 88% on time overall.
  • The largest source of delay minutes was late-arriving aircraft (69%).

On-time trend by month

0%50%100%July 2025: 88.9% on time, 0.0% cancelledJul ’25August 2025: 53.8% on time, 0.0% cancelledAug ’25September 2025: 87.5% on time, 0.0% cancelledSep ’25October 2025: 50.0% on time, 0.0% cancelledOct ’25November 2025: 50.0% on time, 0.0% cancelledNov ’25December 2025: 87.5% on time, 0.0% cancelledDec ’25January 2026: 100.0% on time, 25.0% cancelledJan ’26March 2026: 0.0% on time, 0.0% cancelledMar ’26
On-time arrival rate by month. Hover a bar for exact figures.

Why this airline's flights were late

  • Late-arriving aircraft69%
  • Air traffic control & airport congestion21%
  • Airline (crew, maintenance, cleaning, fueling)10%
  • Extreme weather0%
  • Security0%

Other airlines on SJU to IAH

58 Spirit Airlines flights tracked on this route; 1 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.