OnTimeRoutes
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Frontier Airlines DEN to PDX on-time performance

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

On-time arrivals
84%
arrived < 15 min late
Cancelled
0.4%
1 flights
Avg arrival delay
10 min
52 min when late
Rank on route
#1 of 5
route average 75% on time

Key facts

  • Frontier Airlines flights on DEN to PDX arrived on time 84% of the time in Aug 2025 – Jul 2026.
  • 0.4% were cancelled, and 6% arrived an hour or more late.
  • That ranks #1 of 5 airlines on this route, which averaged 75% on time overall.
  • The largest source of delay minutes was late-arriving aircraft (48%).

On-time trend by month

50%75%100%July 2025: 70.0% on time, 3.2% cancelledJul ’25August 2025: 73.2% on time, 0.0% cancelledAug ’25September 2025: 83.9% on time, 0.0% cancelledSep ’25October 2025: 89.7% on time, 0.0% cancelledOct ’25November 2025: 95.7% on time, 0.0% cancelledNov ’25December 2025: 60.0% on time, 0.0% cancelledDec ’25January 2026: 87.5% on time, 0.0% cancelledJan ’26March 2026: 80.0% on time, 0.0% cancelledMar ’26April 2026: 85.7% on time, 0.0% cancelledApr ’26May 2026: 86.4% on time, 0.0% cancelledMay ’26June 2026: 89.7% on time, 0.0% cancelledJun ’26July 2026: 90.0% on time, 3.2% cancelledJul ’26
On-time arrival rate by month. Hover a bar for exact figures.

Why this airline's flights were late

  • Late-arriving aircraft48%
  • Airline (crew, maintenance, cleaning, fueling)33%
  • Air traffic control & airport congestion17%
  • Extreme weather2%
  • Security0%

Other airlines on DEN to PDX

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

280 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.