Delta Air Lines DTW to IAD on-time performance
Delta Air Lines nonstop flights from Detroit to Washington · Aug 2025 – Jul 2026
On-time arrivals
88%
arrived < 15 min late
Cancelled
1.4%
2 flights
Avg arrival delay
11 min
83 min when late
Rank on route
#1 of 4
route average 75% on time
Key facts
- Delta Air Lines flights on DTW to IAD arrived on time 88% of the time in Aug 2025 – Jul 2026.
- 1.4% were cancelled, and 6% arrived an hour or more late.
- That ranks #1 of 4 airlines on this route, which averaged 75% on time overall.
- The largest source of delay minutes was air traffic control & airport congestion (51%).
On-time trend by month
Why this airline's flights were late
- Air traffic control & airport congestion51%
- Airline (crew, maintenance, cleaning, fueling)36%
- Late-arriving aircraft13%
- Extreme weather0%
- Security0%
Other airlines on DTW to IAD
- SkyWest Airlines69% on time · 28 min avg delay
- Republic Airways85% on time · 11 min avg delay
- United Airlines87% on time · 18 min avg delay
Full DTW to IAD comparison →
Delta Air Lines on-time record across all routes →
147 Delta Air Lines flights tracked on this route; 2 cancelled, 0 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.