Delta Air Lines ATL to IAD on-time performance
Delta Air Lines nonstop flights from Atlanta to Washington · Aug 2025 – Jul 2026
On-time arrivals
78%
arrived < 15 min late
Cancelled
2.7%
60 flights
Avg arrival delay
18 min
77 min when late
Rank on route
#3 of 4
route average 77% on time
Key facts
- Delta Air Lines flights on ATL to IAD arrived on time 78% of the time in Aug 2025 – Jul 2026.
- 2.7% were cancelled, and 8% arrived an hour or more late.
- That ranks #3 of 4 airlines on this route, which averaged 77% on time overall.
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (61%).
On-time trend by month
Why this airline's flights were late
- Airline (crew, maintenance, cleaning, fueling)61%
- Late-arriving aircraft17%
- Air traffic control & airport congestion17%
- Extreme weather5%
- Security0%
Other airlines on ATL to IAD
- United Airlines82% on time · 15 min avg delay
- Frontier Airlines63% on time · 31 min avg delay
- Republic Airways86% on time · 8 min avg delay
Full ATL to IAD comparison →
Delta Air Lines on-time record across all routes →
2,224 Delta Air Lines flights tracked on this route; 60 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.