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2,085 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 95% depart on time. After 4 pm it’s 78%.

Best time to leave 6–7 am 92% arrive on time from IAD
Best single flight UA 1775 IAD 08:15 → ORD 09:36 · 84% on time Avoid UA 2497 IAD 17:42 → ORD 18:50 · 48% 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
97
93
92
87
85
73
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84
% 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
Chicago flights leaving IAD 10–11 am: 1Close ×
UA 1252 IAD 10:31 ORD 11:53 2h 22m 125 92% 0.8% 59 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 2,085 76% 1.0% 78 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 1775 IAD 08:15 ORD 09:36 84%
UA 2331 IAD 13:15 ORD 14:29 81%
UA 1738 IAD 22:20 ORD 23:31 80%
UA 2497 IAD 17:42 ORD 18:50 48%
All 9 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 IAD ORD 2h 14m 76% 1.0% 2,085 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