United Airlines RDU to IAH on-time performance
United Airlines nonstop flights from Raleigh/Durham to Houston · Aug 2025 – Jul 2026
On-time arrivals
88%
arrived < 15 min late
Cancelled
0.9%
6 flights
Avg arrival delay
10 min
79 min when late
Rank on route
#2 of 3
route average 85% on time
Key facts
- United Airlines flights on RDU to IAH arrived on time 88% of the time in Aug 2025 – Jul 2026.
- 0.9% were cancelled, and 4% arrived an hour or more late.
- That ranks #2 of 3 airlines on this route, which averaged 85% on time overall.
- The largest source of delay minutes was air traffic control & airport congestion (43%).
On-time trend by month
Why this airline's flights were late
- Air traffic control & airport congestion43%
- Airline (crew, maintenance, cleaning, fueling)33%
- Late-arriving aircraft20%
- Extreme weather4%
- Security0%
Other airlines on RDU to IAH
- Frontier Airlines76% on time · 23 min avg delay
- SkyWest Airlines100% on time · 10 min avg delay
Full RDU to IAH comparison →
United Airlines on-time record across all routes →
696 United Airlines flights tracked on this route; 6 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.