Delta Air Lines SJU to DTW on-time performance
Delta Air Lines nonstop flights from San Juan to Detroit · Aug 2025 – Jul 2026
On-time arrivals
83%
arrived < 15 min late
Cancelled
1.9%
6 flights
Avg arrival delay
9 min
45 min when late
Rank on route
#1 of 2
route average 82% on time
Key facts
- Delta Air Lines flights on SJU to DTW arrived on time 83% of the time in Aug 2025 – Jul 2026.
- 1.9% were cancelled, and 3% arrived an hour or more late.
- That ranks #1 of 2 airlines on this route, which averaged 82% on time overall.
- The largest source of delay minutes was late-arriving aircraft (71%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft71%
- Air traffic control & airport congestion16%
- Airline (crew, maintenance, cleaning, fueling)13%
- Extreme weather0%
- Security0%
Other airlines on SJU to DTW
- Spirit Airlines75% on time · 16 min avg delay
Full SJU to DTW comparison →
Delta Air Lines on-time record across all routes →
324 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.