Delta Air Lines IAD to DTW on-time performance
Delta Air Lines nonstop flights from Washington to Detroit · Aug 2025 – Jul 2026
On-time arrivals
81%
arrived < 15 min late
Cancelled
2.0%
3 flights
Avg arrival delay
16 min
79 min when late
Rank on route
#1 of 4
route average 78% on time
Key facts
- Delta Air Lines flights on IAD to DTW arrived on time 81% of the time in Aug 2025 – Jul 2026.
- 2% were cancelled, and 10% arrived an hour or more late.
- That ranks #1 of 4 airlines on this route, which averaged 78% on time overall.
- The largest source of delay minutes was late-arriving aircraft (37%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft37%
- Airline (crew, maintenance, cleaning, fueling)28%
- Air traffic control & airport congestion21%
- Extreme weather15%
- Security0%
Other airlines on IAD to DTW
- SkyWest Airlines77% on time · 29 min avg delay
- Republic Airways77% on time · 16 min avg delay
- United Airlines79% on time · 11 min avg delay
Full IAD to DTW comparison →
Delta Air Lines on-time record across all routes →
147 Delta Air Lines flights tracked on this route; 3 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.