Delta Air Lines ATL to SJU on-time performance
Delta Air Lines nonstop flights from Atlanta to San Juan · Aug 2025 – Jul 2026
On-time arrivals
76%
arrived < 15 min late
Cancelled
0.9%
15 flights
Avg arrival delay
14 min
52 min when late
Rank on route
#1 of 3
route average 71% on time
Key facts
- Delta Air Lines flights on ATL to SJU arrived on time 76% of the time in Aug 2025 – Jul 2026.
- 0.9% were cancelled, and 6% arrived an hour or more late.
- That ranks #1 of 3 airlines on this route, which averaged 71% on time overall.
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (58%).
On-time trend by month
Why this airline's flights were late
- Airline (crew, maintenance, cleaning, fueling)58%
- Air traffic control & airport congestion22%
- Late-arriving aircraft17%
- Extreme weather3%
- Security0%
Other airlines on ATL to SJU
- Frontier Airlines55% on time · 33 min avg delay
- Spirit Airlines36% on time · 39 min avg delay
Full ATL to SJU comparison →
Delta Air Lines on-time record across all routes →
1,627 Delta Air Lines flights tracked on this route; 15 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.