Delta Air Lines SLC to PHL on-time performance
Delta Air Lines nonstop flights from Salt Lake City to Philadelphia · Aug 2025 – Jul 2026
On-time arrivals
83%
arrived < 15 min late
Cancelled
1.0%
6 flights
Avg arrival delay
10 min
54 min when late
Rank on route
#2 of 2
route average 85% on time
Key facts
- Delta Air Lines flights on SLC to PHL arrived on time 83% of the time in Aug 2025 – Jul 2026.
- 1% were cancelled, and 4% arrived an hour or more late.
- That ranks #2 of 2 airlines on this route, which averaged 85% on time overall.
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (48%).
On-time trend by month
Why this airline's flights were late
- Airline (crew, maintenance, cleaning, fueling)48%
- Air traffic control & airport congestion35%
- Late-arriving aircraft16%
- Extreme weather1%
- Security0%
Other airlines on SLC to PHL
- American Airlines88% on time · 18 min avg delay
Full SLC to PHL comparison →
Delta Air Lines on-time record across all routes →
598 Delta Air Lines flights tracked on this route; 6 cancelled, 2 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.