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4,552 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am from Bush: 92% depart on time. After 4 pm it’s 7 in 10.

Best time to leave 5–6 am 98% arrive on time from IAH
Best airport pair HOU → SJC 85% on time, fewest cancelled (0.0%), 364 flights
Best single flight UA 487 IAH 05:22 → SFO 07:22 · 97% on time Avoid UA 1341 IAH 18:05 → SFO 20:10 · 62% 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
IAH
96
93
77
73
80
76
84
66
74
79
66
55
66
78
HOU
92
88
62
70
64
% 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 739 81% 0.1% 47 min
United 3,813 79% 0.4% 65 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.
UA 487 IAH 05:22 SFO 07:22 97%
UA 1768 IAH 07:20 SFO 09:25 89%
UA 1609 IAH 21:59 SFO 00:05 80%
UA 589 IAH 15:30 SFO 17:35 80%
UA 2611 IAH 12:58 SFO 15:03 78%
· · ·
UA 2358 IAH 09:35 SFO 11:35 74%
UA 382 IAH 16:25 SFO 18:30 73%
UA 1341 IAH 18:05 SFO 20:10 62%
All 16 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 SJC 4h 10m 85% 0.0% 364 Flying now
United IAH SJC 4h 03m 85% 0.0% 215 Flying now
United IAH SFO 4h 10m 79% 0.5% 3,598 Flying now
Southwest HOU OAK 4h 15m 77% 0.3% 375 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