OnTimeRoutes
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Frontier Airlines ATL to DEN on-time performance

Frontier Airlines nonstop flights from Atlanta to Denver · Aug 2025 – Jul 2026

On-time arrivals
72%
arrived < 15 min late
Cancelled
1.3%
10 flights
Avg arrival delay
24 min
82 min when late
Rank on route
#4 of 4
route average 78% on time

Key facts

  • Frontier Airlines flights on ATL to DEN arrived on time 72% of the time in Aug 2025 – Jul 2026.
  • 1.3% were cancelled, and 10% arrived an hour or more late.
  • That ranks #4 of 4 airlines on this route, which averaged 78% on time overall.
  • The largest source of delay minutes was late-arriving aircraft (52%).

On-time trend by month

40%70%100%July 2025: 55.9% on time, 3.3% cancelledJul ’25August 2025: 65.6% on time, 1.6% cancelledAug ’25September 2025: 73.1% on time, 0.0% cancelledSep ’25October 2025: 73.3% on time, 0.0% cancelledOct ’25November 2025: 78.0% on time, 0.0% cancelledNov ’25December 2025: 71.7% on time, 1.9% cancelledDec ’25January 2026: 78.7% on time, 2.1% cancelledJan ’26February 2026: 69.8% on time, 0.0% cancelledFeb ’26March 2026: 66.7% on time, 5.0% cancelledMar ’26April 2026: 70.7% on time, 0.0% cancelledApr ’26May 2026: 77.5% on time, 0.0% cancelledMay ’26June 2026: 70.1% on time, 2.2% cancelledJun ’26July 2026: 68.9% on time, 2.2% cancelledJul ’26
On-time arrival rate by month. Hover a bar for exact figures.

Why this airline's flights were late

  • Late-arriving aircraft52%
  • Airline (crew, maintenance, cleaning, fueling)29%
  • Air traffic control & airport congestion13%
  • Extreme weather6%
  • Security0%

Other airlines on ATL to DEN

Full ATL to DEN comparison →
Frontier Airlines on-time record across all routes →

769 Frontier Airlines flights tracked on this route; 10 cancelled, 2 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.