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3,598 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: almost all depart on time. After 4 pm it’s 4 in 5.

Best time to leave 5–6 am 97% arrive on time from SFO
Best single flight UA 2305 SFO 16:40 → IAH 22:52 · 85% on time Avoid UA 1387 SFO 12:15 → IAH 18:27 · 78% 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
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SFO
97
98
92
87
85
75
85
84
81
78
80
86
76
% 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
Houston flights leaving SFO 2–3 pm: 1Close ×
UA 2002 SFO 14:28 IAH 20:40 4h 12m 93 71% 0.0% 35 min

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 3,598 85% 0.3% 55 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 2305 SFO 16:40 IAH 22:52 85%
UA 505 SFO 23:59 IAH 06:04 82%
UA 1387 SFO 12:15 IAH 18:27 78%
All 11 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.
United SFO IAH 3h 55m 85% 0.3% 3,598 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