Frontier Airlines MDW to MIA on-time performance
Frontier Airlines nonstop flights from Chicago to Miami · Aug 2025 – Jul 2026
On-time arrivals
75%
arrived < 15 min late
Cancelled
1.6%
1 flights
Avg arrival delay
21 min
81 min when late
Rank on route
#1 of 2
route average 73% on time
Key facts
- Frontier Airlines flights on MDW to MIA arrived on time 75% of the time in Aug 2025 – Jul 2026.
- 1.6% were cancelled, and 16% arrived an hour or more late.
- That ranks #1 of 2 airlines on this route, which averaged 73% on time overall.
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (47%).
On-time trend by month
Why this airline's flights were late
- Airline (crew, maintenance, cleaning, fueling)47%
- Air traffic control & airport congestion31%
- Late-arriving aircraft21%
- Extreme weather2%
- Security0%
Other airlines on MDW to MIA
- Southwest Airlines73% on time · 15 min avg delay
Full MDW to MIA comparison →
Frontier Airlines on-time record across all routes →
64 Frontier 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.