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Showing United only (incl. its regional partners)All airlines ×
1,041 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

No clear winner: United’s IAD → SAN flights land within a few points of 88% on time whatever the hour.

Best time to leave 9–10 am 96% arrive on time from IAD
Best single flight UA 1930 IAD 08:26 → SAN 10:49 · 94% on time Avoid UA 2054 IAD 18:00 → SAN 20:23 · 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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IAD
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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 1930 IAD 08:26 SAN 10:49 94%
UA 2163 IAD 12:40 SAN 15:03 85%
UA 2054 IAD 18:00 SAN 20:23 83%

All 3 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 1930 IAD 08:26 SAN 10:49 5h 23m 335 94% 0.9% 61 min
UA 2163 IAD 12:40 SAN 15:03 5h 23m 226 85% 0.4% 54 min
UA 2054 IAD 18:00 SAN 20:23 5h 23m 324 83% 0.6% 67 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 IAD SAN 5h 23m 88% 0.6% 1,041 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