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

No clear winner: airlines and hours on this route all land within a few points of 88% on time.

Best time to leave 1–2 pm 97% arrive on time from SAN

Best single flight AS 322 SAN 09:37 → IAD 17:42 · 91% on time Avoid AS 506 SAN 10:34 → IAD 18:45 · 86% 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).

SAN

% 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

Dulles flights leaving SAN 12–1 pm: 1Close ×


UA 444	SAN 12:57	IAD 21:05	5h 08m	170	87%	0.0%	55 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	89%	0.7%	85 min
Alaska	361	88%	0.8%	60 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.


AS 322	SAN 09:37	IAD 17:42	91%
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%
AS 506	SAN 10:34	IAD 18:45	86%

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
Alaska	SAN	IAD	5h 11m	88%	0.8%	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