United Airlines SFO to PHL on-time performance
United Airlines nonstop flights from San Francisco to Philadelphia · Aug 2025 – Jul 2026
On-time arrivals
86%
arrived < 15 min late
Cancelled
0.6%
4 flights
Avg arrival delay
8 min
48 min when late
Rank on route
#1 of 2
route average 85% on time
Key facts
- United Airlines flights on SFO to PHL arrived on time 86% of the time in Aug 2025 – Jul 2026.
- 0.6% were cancelled, and 4% arrived an hour or more late.
- That ranks #1 of 2 airlines on this route, which averaged 85% on time overall.
- The largest source of delay minutes was late-arriving aircraft (43%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft43%
- Air traffic control & airport congestion27%
- Airline (crew, maintenance, cleaning, fueling)27%
- Extreme weather2%
- Security0%
Other airlines on SFO to PHL
- American Airlines85% on time · 17 min avg delay
Full SFO to PHL comparison →
United Airlines on-time record across all routes →
726 United Airlines flights tracked on this route; 4 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.