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Showing United only (incl. its regional partners)All airlines ×
1,696 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

No clear winner: United’s IAH → SAN flights land within a few points of 82% on time whatever the hour.

Best time to leave 4–5 pm 86% arrive on time from IAH
Best single flight UA 2491 IAH 09:30 → SAN 10:51 · 86% on time Avoid UA 2399 IAH 12:00 → SAN 13:21 · 83% 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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IAH
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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 2491 IAH 09:30 SAN 10:51 86%
UA 2399 IAH 12:00 SAN 13:21 83%

All 7 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 2491 IAH 09:30 SAN 10:51 3h 21m 365 86% 0.3% 54 min
UA 2399 IAH 12:00 SAN 13:21 3h 21m 225 83% 0.0% 50 min
UA 2418 IAH 16:20 SAN 17:41 3h 21m 35 83% 0.0% 97 min
UA 2751 IAH 16:20 SAN 17:41 3h 21m 36 75% 0.0% 53 min
UA 2690 IAH 18:29 SAN 19:50 3h 21m 117 73% 0.0% 65 min
UA 2407 IAH 20:03 SAN 21:24 3h 21m 36 56% 0.0% 42 min
UA 2461 IAH 20:03 SAN 21:24 3h 21m 35 74% 0.0% 49 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 IAH SAN 3h 30m 82% 0.2% 1,696 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