Frontier Airlines PDX to DEN on-time performance
Frontier Airlines nonstop flights from Portland to Denver · Aug 2025 – Jul 2026
On-time arrivals
80%
arrived < 15 min late
Cancelled
0.4%
1 flights
Avg arrival delay
13 min
60 min when late
Rank on route
#2 of 5
route average 83% on time
Key facts
- Frontier Airlines flights on PDX to DEN arrived on time 80% of the time in Aug 2025 – Jul 2026.
- 0.4% were cancelled, and 7% arrived an hour or more late.
- That ranks #2 of 5 airlines on this route, which averaged 83% on time overall.
- The largest source of delay minutes was air traffic control & airport congestion (35%).
On-time trend by month
Why this airline's flights were late
- Air traffic control & airport congestion35%
- Late-arriving aircraft32%
- Airline (crew, maintenance, cleaning, fueling)32%
- Extreme weather1%
- Security0%
Other airlines on PDX to DEN
- United Airlines91% on time · 7 min avg delay
- Southwest Airlines74% on time · 14 min avg delay
- Alaska Airlines80% on time · 12 min avg delay
- SkyWest Airlines69% on time · 15 min avg delay
Full PDX to DEN comparison →
Frontier Airlines on-time record across all routes →
281 Frontier Airlines flights tracked on this route; 1 cancelled, 1 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.