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

Leave before 9 am: 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 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).

IAH

% 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	3,598	79%	0.5%	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 12 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	IAH	SFO	4h 10m	79%	0.5%	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