United Airlines ORD to PHL on-time performance
United Airlines nonstop flights from Chicago to Philadelphia · Aug 2025 – Jul 2026
On-time arrivals
73%
arrived < 15 min late
Cancelled
1.7%
31 flights
Avg arrival delay
23 min
80 min when late
Rank on route
#2 of 4
route average 72% on time
Key facts
- United Airlines flights on ORD to PHL arrived on time 73% of the time in Aug 2025 – Jul 2026.
- 1.7% were cancelled, and 11% arrived an hour or more late.
- That ranks #2 of 4 airlines on this route, which averaged 72% on time overall.
- The largest source of delay minutes was late-arriving aircraft (48%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft48%
- Air traffic control & airport congestion25%
- Airline (crew, maintenance, cleaning, fueling)21%
- Extreme weather6%
- Security0%
Other airlines on ORD to PHL
- American Airlines72% on time · 27 min avg delay
- Frontier Airlines60% on time · 53 min avg delay
- Republic Airways81% on time · 9 min avg delay
Full ORD to PHL comparison →
United Airlines on-time record across all routes →
1,813 United Airlines flights tracked on this route; 31 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.