United Airlines ATL to IAD on-time performance
United Airlines nonstop flights from Atlanta to Washington · Aug 2025 – Jul 2026
On-time arrivals
82%
arrived < 15 min late
Cancelled
0.9%
10 flights
Avg arrival delay
15 min
77 min when late
Rank on route
#2 of 4
route average 77% on time
Key facts
- United Airlines flights on ATL to IAD arrived on time 82% of the time in Aug 2025 – Jul 2026.
- 0.9% were cancelled, and 8% arrived an hour or more late.
- That ranks #2 of 4 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%
- Air traffic control & airport congestion28%
- Airline (crew, maintenance, cleaning, fueling)23%
- Extreme weather7%
- Security0%
Other airlines on ATL to IAD
- Delta Air Lines78% on time · 18 min avg delay
- Frontier Airlines63% on time · 31 min avg delay
- Republic Airways86% on time · 8 min avg delay
Full ATL to IAD comparison →
United Airlines on-time record across all routes →
1,094 United Airlines flights tracked on this route; 10 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.