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1,052 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

No clear winner: United’s HSV → IAD flights land within a few points of 85% on time whatever the hour.

Best time to leave 8–9 am 87% arrive on time from HSV
Best single flight UA 4240 HSV 08:05 → IAD 11:11 · 87% on time Avoid UA 4340 HSV 12:55 → IAD 16:01 · 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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HSV
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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
Dulles flights leaving HSV 6–7 pm: 1Close ×
UA 4351flown by CommuteAir HSV 18:00 IAD 21:06 2h 06m 361 85% 1.4% 120 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 (incl. CommuteAir) 1,052 85% 1.0% 109 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 4240flown by CommuteAir HSV 08:05 IAD 11:11 87%
UA 4351flown by CommuteAir HSV 18:00 IAD 21:06 85%
UA 4340flown by CommuteAir HSV 12:55 IAD 16:01 84%

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 HSV IAD 2h 06m 85% 1.0% 1,052 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