United Airlines IAH to PHL on-time performance
United Airlines nonstop flights from Houston to Philadelphia · Aug 2025 – Jul 2026
On-time arrivals
81%
arrived < 15 min late
Cancelled
1.1%
10 flights
Avg arrival delay
14 min
69 min when late
Rank on route
#2 of 6
route average 79% on time
Key facts
- United Airlines flights on IAH to PHL arrived on time 81% of the time in Aug 2025 – Jul 2026.
- 1.1% were cancelled, and 7% arrived an hour or more late.
- That ranks #2 of 6 airlines on this route, which averaged 79% on time overall.
- The largest source of delay minutes was late-arriving aircraft (41%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft41%
- Air traffic control & airport congestion32%
- Airline (crew, maintenance, cleaning, fueling)24%
- Extreme weather3%
- Security0%
Other airlines on IAH to PHL
- American Airlines77% on time · 32 min avg delay
- PSA Airlines71% on time · 48 min avg delay
- Frontier Airlines72% on time · 25 min avg delay
- Republic Airways60% on time · 60 min avg delay
- Spirit Airlines91% on time · 7 min avg delay
Full IAH to PHL comparison →
United Airlines on-time record across all routes →
922 United Airlines flights tracked on this route; 10 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.