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Showing Delta only (incl. its regional partners)All airlines ×
2,521 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 7 in 10.

Best time to leave 8–9 am 93% arrive on time from ATL
Best single flight DL 1572 ATL 12:30 → IAH 13:38 · 86% on time Avoid DL 1131 ATL 18:39 → IAH 19:52 · 59% 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
20
21
22
ATL
90
95
87
80
88
79
88
70
81
61
76
70
71
65
73
% 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.

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 1572 ATL 12:30 IAH 13:38 86%
DL 1682 ATL 10:05 IAH 11:18 83%
DL 1585 ATL 07:30 IAH 08:37 81%
DL 1601 ATL 22:44 IAH 23:56 76%
DL 1284 ATL 20:21 IAH 21:34 73%
· · ·
DL 1223 ATL 16:25 IAH 17:39 68%
DL 1131 ATL 18:39 IAH 19:52 59%

All 9 Delta flights in the current schedule

Every flight that flew in the Jun 6 – Jul 31, 2026 schedule, with its record over Aug 2025 – Jul 2026. Times are local. Click a column to sort.
DL 1585 ATL 07:30 IAH 08:37 2h 07m 327 81% 4.3% 40 min
DL 1682 ATL 10:05 IAH 11:18 2h 13m 343 83% 1.5% 55 min
DL 1148 ATL 12:00 IAH 13:14 2h 14m 31 71% 0.0% 48 min
DL 1572 ATL 12:30 IAH 13:38 2h 08m 199 86% 0.5% 44 min
DL 2890 ATL 14:46 IAH 15:56 2h 12m 148 69% 0.0% 52 min
DL 1223 ATL 16:25 IAH 17:39 2h 14m 157 68% 2.5% 59 min
DL 1131 ATL 18:39 IAH 19:52 2h 13m 189 59% 1.1% 68 min
DL 1284 ATL 20:21 IAH 21:34 2h 13m 356 73% 2.0% 69 min
DL 1601 ATL 22:44 IAH 23:56 2h 12m 365 76% 2.5% 53 min

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 IAH 2h 13m 76% 1.9% 2,521 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