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1,873 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 93% 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 1524 IAD 08:40 → IAH 10:59 · 89% on time Avoid UA 2217 IAD 17:59 → IAH 20:25 · 72% 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
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% 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
Houston flights leaving IAD 5–6 pm: 1Close ×
UA 2217 IAD 17:59 IAH 20:25 3h 26m 341 72% 0.3% 62 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 1,873 85% 0.4% 70 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 1524 IAD 08:40 IAH 10:59 89%
UA 1535 IAD 12:50 IAH 15:11 84%
UA 2217 IAD 17:59 IAH 20:25 72%
All 8 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 IAH 3h 25m 85% 0.4% 1,873 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