Frontier Airlines DEN to MKE on-time performance
Frontier Airlines nonstop flights from Denver to Milwaukee · Aug 2025 – Jul 2026
On-time arrivals
90%
arrived < 15 min late
Cancelled
0.0%
0 flights
Avg arrival delay
6 min
51 min when late
Rank on route
#1 of 4
route average 77% on time
Key facts
- Frontier Airlines flights on DEN to MKE arrived on time 90% of the time in Aug 2025 – Jul 2026.
- 0% were cancelled, and 4% arrived an hour or more late.
- That ranks #1 of 4 airlines on this route, which averaged 77% on time overall.
- The largest source of delay minutes was air traffic control & airport congestion (44%).
On-time trend by month
Why this airline's flights were late
- Air traffic control & airport congestion44%
- Airline (crew, maintenance, cleaning, fueling)30%
- Extreme weather14%
- Late-arriving aircraft11%
- Security0%
Other airlines on DEN to MKE
- Southwest Airlines73% on time · 16 min avg delay
- United Airlines83% on time · 11 min avg delay
- SkyWest Airlines74% on time · 22 min avg delay
Full DEN to MKE comparison →
Frontier Airlines on-time record across all routes →
52 Frontier Airlines flights tracked on this route; 0 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.