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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 SAN → IAD flights land within a few points of 9 in 10 on time whatever the hour.

Best time to leave 1–2 pm 97% arrive on time from SAN
Best single flight UA 2129 SAN 21:59 → IAD 05:59 · 89% on time Avoid UA 444 SAN 12:57 → IAD 21:05 · 87% 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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SAN
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90
% 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 2129 SAN 21:59 IAD 05:59 89%
UA 1071 SAN 08:00 IAD 16:08 88%
UA 444 SAN 12:57 IAD 21:05 87%

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 1071 SAN 08:00 IAD 16:08 5h 08m 352 88% 0.6% 66 min
UA 444 SAN 12:57 IAD 21:05 5h 08m 170 87% 0.0% 55 min
UA 2129 SAN 21:59 IAD 05:59 5h 00m 326 89% 1.2% 137 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 SAN IAD 5h 08m 89% 0.7% 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