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12,162 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am from Hobby: 93% depart on time. After 4 pm it’s 2 in 3.

Best time to leave 6–7 am 92% arrive on time from HOU, 91% arrive on time from IAH
Best airport pair HOU → DAL 82% on time, fewest cancelled (2.2%), 4,047 flights
Best single flight WN 1636 HOU 06:00 → DAL 07:05 · 95% on time Avoid UA 1439 IAH 16:20 → DFW 17:46 · 70% 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).

5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
IAH
88
92
87
77
83
74
79
77
48
71
70
64
57
73
79
83
HOU
92
94
95
91
89
85
83
78
75
80
74
72
62
67
71
65
63
55
% 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.
Southwest HOU→DAL only 4,047 82% 2.2% 61 min
United (incl. SkyWest, Mesa) IAH→DFW only 2,794 77% 1.4% 76 min
American (incl. Envoy, PSA, SkyWest) 5,321 76% 3.6% 113 min

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.
WN 1636 HOU 06:00 DAL 07:05 95%
WN 4 HOU 07:00 DAL 08:10 94%
WN 16 HOU 10:25 DAL 11:35 91%
AA 700 IAH 06:02 DFW 07:28 90%
AA 2551 IAH 05:02 DFW 06:19 90%
· · ·
UA 1949 IAH 19:59 DFW 21:25 71%
UA 1535 IAH 18:05 DFW 19:31 71%
UA 1439 IAH 16:20 DFW 17:46 70%
All 55 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.
Southwest HOU DAL 1h 10m 82% 2.2% 4,047 Flying now
American HOU DFW 1h 26m 78% 4.1% 2,001 Flying now
United IAH DFW 1h 25m 77% 1.4% 2,794 Flying now
American IAH DFW 1h 28m 75% 3.3% 3,320 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