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Showing United only (incl. its regional partners)All airlines ×
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).

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SFO
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% 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.

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 United 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.
UA 604 SFO 00:45 IAH 06:34 3h 49m 125 83% 0.0% 77 min
UA 2168 SFO 05:00 IAH 10:55 3h 55m 149 97% 1.3% 45 min
UA 686 SFO 07:05 IAH 13:11 4h 06m 149 95% 0.7% 66 min
UA 2110 SFO 08:55 IAH 15:07 4h 12m 35 94% 0.0% 20 min
UA 2498 SFO 08:55 IAH 15:07 4h 12m 90 89% 0.0% 69 min
UA 1259 SFO 10:50 IAH 16:52 4h 02m 72 61% 0.0% 39 min
UA 1387 SFO 12:15 IAH 18:27 4h 12m 257 78% 0.4% 48 min
UA 2002 SFO 14:28 IAH 20:40 4h 12m 93 71% 0.0% 35 min
UA 2305 SFO 16:40 IAH 22:52 4h 12m 310 85% 0.0% 70 min
UA 1702 SFO 18:54 IAH 00:59 4h 05m 59 83% 0.0% 73 min
UA 505 SFO 23:59 IAH 06:04 4h 05m 327 82% 0.3% 60 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 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