Frontier Airlines ATL to SJU on-time performance
Frontier Airlines nonstop flights from Atlanta to San Juan · Aug 2025 – Jul 2026
On-time arrivals
55%
arrived < 15 min late
Cancelled
1.8%
7 flights
Avg arrival delay
33 min
70 min when late
Rank on route
#2 of 3
route average 71% on time
Key facts
- Frontier Airlines flights on ATL to SJU arrived on time 55% of the time in Aug 2025 – Jul 2026.
- 1.8% were cancelled, and 16% arrived an hour or more late.
- That ranks #2 of 3 airlines on this route, which averaged 71% on time overall.
- The largest source of delay minutes was late-arriving aircraft (49%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft49%
- Airline (crew, maintenance, cleaning, fueling)32%
- Air traffic control & airport congestion19%
- Extreme weather0%
- Security0%
Other airlines on ATL to SJU
- Delta Air Lines76% on time · 14 min avg delay
- Spirit Airlines36% on time · 39 min avg delay
Full ATL to SJU comparison →
Frontier Airlines on-time record across all routes →
379 Frontier Airlines flights tracked on this route; 7 cancelled, 3 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.