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1,949 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 88% depart on time. After 4 pm it’s 72%.

Best time to leave 7–8 am 89% arrive on time from IAH
Best single flight UA 1663 IAH 18:05 → PHL 22:29 · 75% 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).

6
7
8
9
10
11
12
13
14
15
16
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18
IAH
88
90
83
72
77
83
78
67
74
% 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.
United (incl. Mesa, Republic) 1,023 82% 1.0% 76 min
American (incl. PSA, Republic) 842 77% 3.0% 145 min
Spirit 12 – 8.3% 69 min
Frontier 72 – 1.4% 85 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.
UA 1663 IAH 18:05 PHL 22:29 75%

All 11 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.
AA 2561 IAH 07:01 PHL 11:23 3h 22m 76 73% 6.6% 202 min
UA 2631 IAH 07:31 PHL 11:58 3h 27m 35 86% 0.0% 31 min
UA 2642 IAH 07:31 PHL 11:58 3h 27m 37 89% 0.0% 32 min
AA 4780flown by Republic IAH 10:15 PHL 14:49 3h 34m 13 54% 0.0% 185 min
F9 2154 IAH 10:36 PHL 15:07 3h 31m 51 74% 2.0% 72 min
F9 4028 IAH 11:51 PHL 16:16 3h 25m 21 67% 0.0% 110 min
AA 1927 IAH 12:21 PHL 16:49 3h 28m 66 55% 1.5% 85 min
UA 2748 IAH 14:31 PHL 18:57 3h 26m 53 55% 3.8% 113 min
AA 1925 IAH 16:27 PHL 20:55 3h 28m 66 70% 3.0% 65 min
UA 3991flown by Mesa IAH 18:05 PHL 22:43 3h 38m 20 60% 0.0% 58 min
UA 1663 IAH 18:05 PHL 22:29 3h 24m 286 75% 1.0% 73 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.
United IAH PHL 3h 24m 82% 1.0% 1,023 Flying now
American IAH PHL 3h 20m 77% 3.0% 842 Flying now
Frontier IAH PHL 3h 31m 72% 1.4% 72 Flying now
Spirit IAH PHL 3h 16m 91%few flights 8.3% 12 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