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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
79
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

Pick an hour to see this route’s flights leaving then.

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