Frontier Airlines DEN to MDW on-time performance
Frontier Airlines nonstop flights from Denver to Chicago · Aug 2025 – Jul 2026
On-time arrivals
77%
arrived < 15 min late
Cancelled
1.4%
1 flights
Avg arrival delay
22 min
90 min when late
Rank on route
#1 of 2
route average 75% on time
Key facts
- Frontier Airlines flights on DEN to MDW arrived on time 77% of the time in Aug 2025 – Jul 2026.
- 1.4% were cancelled, and 14% arrived an hour or more late.
- That ranks #1 of 2 airlines on this route, which averaged 75% on time overall.
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (70%).
On-time trend by month
Why this airline's flights were late
- Airline (crew, maintenance, cleaning, fueling)70%
- Late-arriving aircraft22%
- Air traffic control & airport congestion8%
- Extreme weather0%
- Security0%
Other airlines on DEN to MDW
- Southwest Airlines75% on time · 15 min avg delay
Full DEN to MDW comparison →
Frontier Airlines on-time record across all routes →
74 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.