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1,402 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

United is clearly ahead here: 88% of its flights arrive on time, 12 points better than Alaska.

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 AS 201 IAD 19:49 → SAN 22:13 · 74% 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
91
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85
71
% 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
San Diego flights leaving IAD 6–7 pm: 1Close ×
UA 2054 IAD 18:00 SAN 20:23 5h 23m 324 83% 0.6% 67 min

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 1,041 88% 0.6% 62 min
Alaska 361 76% 0.6% 49 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 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%
AS 201 IAD 19:49 SAN 22:13 74%

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
Alaska IAD SAN 5h 38m 76% 0.6% 361 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