Delta Air Lines IAD to ATL on-time performance
Delta Air Lines nonstop flights from Washington to Atlanta · Aug 2025 – Jul 2026
On-time arrivals
81%
arrived < 15 min late
Cancelled
2.8%
62 flights
Avg arrival delay
19 min
95 min when late
Rank on route
#1 of 4
route average 79% on time
Key facts
- Delta Air Lines flights on IAD to ATL arrived on time 81% of the time in Aug 2025 – Jul 2026.
- 2.8% were cancelled, and 8% arrived an hour or more late.
- That ranks #1 of 4 airlines on this route, which averaged 79% on time overall.
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (46%).
On-time trend by month
Why this airline's flights were late
- Airline (crew, maintenance, cleaning, fueling)46%
- Late-arriving aircraft34%
- Air traffic control & airport congestion15%
- Extreme weather6%
- Security0%
Other airlines on IAD to ATL
- United Airlines80% on time · 16 min avg delay
- Frontier Airlines69% on time · 26 min avg delay
- Republic Airways80% on time · 10 min avg delay
Full IAD to ATL comparison →
Delta Air Lines on-time record across all routes →
2,224 Delta Air Lines flights tracked on this route; 62 cancelled, 11 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.