Delta Air Lines SLC to IAD on-time performance
Delta Air Lines nonstop flights from Salt Lake City to Washington · Aug 2025 – Jul 2026
On-time arrivals
84%
arrived < 15 min late
Cancelled
1.6%
6 flights
Avg arrival delay
11 min
61 min when late
Rank on route
#2 of 2
route average 87% on time
Key facts
- Delta Air Lines flights on SLC to IAD arrived on time 84% of the time in Aug 2025 – Jul 2026.
- 1.6% were cancelled, and 6% arrived an hour or more late.
- That ranks #2 of 2 airlines on this route, which averaged 87% on time overall.
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (65%).
On-time trend by month
Why this airline's flights were late
- Airline (crew, maintenance, cleaning, fueling)65%
- Late-arriving aircraft18%
- Air traffic control & airport congestion13%
- Extreme weather4%
- Security0%
Other airlines on SLC to IAD
- United Airlines89% on time · 9 min avg delay
Full SLC to IAD comparison →
Delta Air Lines on-time record across all routes →
364 Delta Air Lines flights tracked on this route; 6 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.