United Airlines IAH to ATL on-time performance
United Airlines nonstop flights from Houston to Atlanta · Aug 2025 – Jul 2026
On-time arrivals
81%
arrived < 15 min late
Cancelled
0.6%
7 flights
Avg arrival delay
13 min
62 min when late
Rank on route
#1 of 5
route average 77% on time
Key facts
- United Airlines flights on IAH to ATL arrived on time 81% of the time in Aug 2025 – Jul 2026.
- 0.6% were cancelled, and 6% arrived an hour or more late.
- That ranks #1 of 5 airlines on this route, which averaged 77% on time overall.
- The largest source of delay minutes was late-arriving aircraft (34%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft34%
- Airline (crew, maintenance, cleaning, fueling)32%
- Air traffic control & airport congestion29%
- Extreme weather5%
- Security0%
Other airlines on IAH to ATL
- Delta Air Lines80% on time · 14 min avg delay
- Frontier Airlines62% on time · 27 min avg delay
- Spirit Airlines75% on time · 16 min avg delay
- SkyWest Airlines75% on time · 5 min avg delay
Full IAH to ATL comparison →
United Airlines on-time record across all routes →
1,263 United Airlines flights tracked on this route; 7 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.