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2,099 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 9 in 10 depart on time. After 4 pm it’s 65%.

Best time to leave 8–9 am 89% arrive on time from ATL
Best single flight DL 1757 ATL 08:06 → SJU 11:44 · 89% on time Avoid F9 2082 ATL 10:25 → SJU 14:15 · 57% on time

Time of day × airport

Share of this route’s flights leaving within 15 minutes, by airport and scheduled departure hour, over Aug 2025 – Jul 2026. Blank: no flights then (or fewer than 40 in the year).

7
8
9
10
11
12
13
14
15
16
17
18
19
ATL
73
91
85
60
79
84
62
68
63
% of this route’s flights leaving within 15 min (small number: flights in the Jun 6 – Jul 31, 2026 schedule): 85+75–8465–7455–64under 55
San Juan flights leaving ATL 9–10 am: 1Close ×
DL 1882 ATL 09:45 SJU 13:31 3h 46m 365 78% 0.8% 39 min

Airlines on this route

Arriving within 15 minutes. Regional flights count under the airline that sells them. Pick an airline to see its flights.
Delta 1,627 77% 0.9% 54 min
Frontier 379 56% 1.8% 71 min
Spirit 93 – 6.5% 59 min

Dimmed: fewer than 150 flights in the year, too few to rank.

Flights, best and worst

Flights in the Jun 6 – Jul 31, 2026 schedule that ran 150+ times in the year. Times are local. Pick a flight for its history.
DL 1757 ATL 08:06 SJU 11:44 89%
DL 1946 ATL 13:06 SJU 16:46 82%
DL 1882 ATL 09:45 SJU 13:31 78%
DL 1861 ATL 18:45 SJU 22:29 67%
DL 1791 ATL 16:59 SJU 20:43 66%
· · ·
F9 2082 ATL 10:25 SJU 14:15 57%
All 7 flights on this route →

Nonstops by airline and airport

Arriving within 15 minutes, Aug 2025 – Jul 2026. Pick a row to see that airline’s flights on that airport pair.
Delta ATL SJU 3h 40m 77% 0.9% 1,627 Flying now
Frontier ATL SJU 3h 50m 56% 1.8% 379 Flying now
Spirit ATL SJU 3h 28m 36% 6.5% 93 Not flying now
Flying on a particular day? Pick a date above and the same ranking uses our forecast odds for each flight that day: Tomorrow.

About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON