Delta Air Lines IAH to ATL on-time performance
Delta Air Lines nonstop flights from Houston to Atlanta · Aug 2025 – Jul 2026
On-time arrivals
80%
arrived < 15 min late
Cancelled
2.1%
52 flights
Avg arrival delay
14 min
67 min when late
Rank on route
#2 of 5
route average 77% on time
Key facts
- Delta Air Lines flights on IAH to ATL arrived on time 80% of the time in Aug 2025 – Jul 2026.
- 2.1% were cancelled, and 7% arrived an hour or more late.
- That ranks #2 of 5 airlines on this route, which averaged 77% on time overall.
- The largest source of delay minutes was late-arriving aircraft (42%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft42%
- Airline (crew, maintenance, cleaning, fueling)35%
- Air traffic control & airport congestion21%
- Extreme weather2%
- Security0%
Other airlines on IAH to ATL
- United Airlines81% on time · 13 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 →
Delta Air Lines on-time record across all routes →
2,520 Delta Air Lines flights tracked on this route; 52 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.