Frontier Airlines MIA to IAH on-time performance
Frontier Airlines nonstop flights from Miami to Houston · Aug 2025 – Jul 2026
On-time arrivals
83%
arrived < 15 min late
Cancelled
4.0%
7 flights
Avg arrival delay
15 min
90 min when late
Rank on route
#3 of 6
route average 78% on time
Key facts
- Frontier Airlines flights on MIA to IAH arrived on time 83% of the time in Aug 2025 – Jul 2026.
- 4% were cancelled, and 8% arrived an hour or more late.
- That ranks #3 of 6 airlines on this route, which averaged 78% on time overall.
- The largest source of delay minutes was late-arriving aircraft (43%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft43%
- Airline (crew, maintenance, cleaning, fueling)38%
- Air traffic control & airport congestion18%
- Extreme weather2%
- Security0%
Other airlines on MIA to IAH
- American Airlines71% on time · 22 min avg delay
- United Airlines86% on time · 13 min avg delay
- Spirit Airlines68% on time · 27 min avg delay
- Envoy Air87% on time · 6 min avg delay
- Republic Airways64% on time · 48 min avg delay
Full MIA to IAH comparison →
Frontier Airlines on-time record across all routes →
176 Frontier Airlines flights tracked on this route; 7 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.