United Airlines DEN to PHL on-time performance
United Airlines nonstop flights from Denver to Philadelphia · Aug 2025 – Jul 2026
On-time arrivals
80%
arrived < 15 min late
Cancelled
0.5%
5 flights
Avg arrival delay
14 min
66 min when late
Rank on route
#1 of 4
route average 74% on time
Key facts
- United Airlines flights on DEN to PHL arrived on time 80% of the time in Aug 2025 – Jul 2026.
- 0.5% were cancelled, and 7% arrived an hour or more late.
- That ranks #1 of 4 airlines on this route, which averaged 74% on time overall.
- The largest source of delay minutes was late-arriving aircraft (47%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft47%
- Airline (crew, maintenance, cleaning, fueling)29%
- Air traffic control & airport congestion23%
- Extreme weather1%
- Security0%
Other airlines on DEN to PHL
- American Airlines79% on time · 23 min avg delay
- Southwest Airlines63% on time · 23 min avg delay
- Frontier Airlines66% on time · 33 min avg delay
Full DEN to PHL comparison →
United Airlines on-time record across all routes →
952 United Airlines flights tracked on this route; 5 cancelled, 3 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.