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2,474 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 6–7 am 96% arrive on time from LAX
Best single flight UA 2632 LAX 21:30 → IAD 05:36 · 94% on time Avoid UA 2268 LAX 08:15 → IAD 16:26 · 84% 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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LAX
96
83
89
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86
% 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 LAX 6–7 am: 1Close ×
UA 2081 LAX 06:00 IAD 14:08 5h 08m 65 97% 1.5% 42 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 2,339 88% 0.6% 54 min
Alaska 19 – 0.0% 40 min
American 116 – 0.0% 70 min

Dimmed: fewer than 150 flights in the year, too few to rank.

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 2632 LAX 21:30 IAD 05:36 94%
UA 1573 LAX 16:49 IAD 00:55 92%
UA 2667 LAX 10:39 IAD 18:48 90%
UA 1635 LAX 12:43 IAD 20:48 89%
UA 2282 LAX 23:30 IAD 07:33 89%
· · ·
UA 2268 LAX 08:15 IAD 16:26 84%
All 11 flights on this route →

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 LAX IAD 5h 03m 88% 0.6% 2,339 Flying now
American LAX IAD 4h 59m 77% 0.0% 116 Flying now
Alaska LAX IAD 5h 05m 89%few flights 0.0% 19 Not 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