United Airlines IAD to ATL on-time performance
United Airlines nonstop flights from Washington to Atlanta · Aug 2025 – Jul 2026
On-time arrivals
80%
arrived < 15 min late
Cancelled
0.7%
8 flights
Avg arrival delay
16 min
77 min when late
Rank on route
#2 of 4
route average 79% on time
Key facts
- United Airlines flights on IAD to ATL arrived on time 80% of the time in Aug 2025 – Jul 2026.
- 0.7% were cancelled, and 9% arrived an hour or more late.
- That ranks #2 of 4 airlines on this route, which averaged 79% on time overall.
- The largest source of delay minutes was late-arriving aircraft (43%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft43%
- Air traffic control & airport congestion29%
- Airline (crew, maintenance, cleaning, fueling)24%
- Extreme weather4%
- Security0%
Other airlines on IAD to ATL
- Delta Air Lines81% on time · 19 min avg delay
- Frontier Airlines69% on time · 26 min avg delay
- Republic Airways80% on time · 10 min avg delay
Full IAD to ATL comparison →
United Airlines on-time record across all routes →
1,092 United Airlines flights tracked on this route; 8 cancelled, 4 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.