Frontier Airlines MIA to DEN on-time performance
Frontier Airlines nonstop flights from Miami to Denver · Aug 2025 – Jul 2026
On-time arrivals
82%
arrived < 15 min late
Cancelled
1.1%
4 flights
Avg arrival delay
20 min
110 min when late
Rank on route
#2 of 4
route average 77% on time
Key facts
- Frontier Airlines flights on MIA to DEN arrived on time 82% of the time in Aug 2025 – Jul 2026.
- 1.1% were cancelled, and 6% arrived an hour or more late.
- That ranks #2 of 4 airlines on this route, which averaged 77% on time overall.
- The largest source of delay minutes was late-arriving aircraft (63%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft63%
- Airline (crew, maintenance, cleaning, fueling)25%
- Air traffic control & airport congestion11%
- Extreme weather0%
- Security0%
Other airlines on MIA to DEN
- United Airlines83% on time · 13 min avg delay
- American Airlines76% on time · 15 min avg delay
- Southwest Airlines55% on time · 30 min avg delay
Full MIA to DEN comparison →
Frontier Airlines on-time record across all routes →
351 Frontier Airlines flights tracked on this route; 4 cancelled, 1 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.