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Showing United only (incl. its regional partners)All airlines ×
2,787 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 92% depart on time. After 4 pm it’s 4 in 5.

Best time to leave 6–7 am 95% arrive on time from IAD
Best single flight UA 1587 IAD 12:48 → DEN 14:42 · 92% on time Avoid UA 599 IAD 17:41 → DEN 19:45 · 74% 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

Pick an hour to see this route’s flights leaving then.

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 1587 IAD 12:48 DEN 14:42 92%
UA 495 IAD 22:23 DEN 00:30 84%
UA 599 IAD 17:41 DEN 19:45 74%

All 11 United flights in the current schedule

Every flight that flew in the Jun 6 – Jul 31, 2026 schedule, with its record over Aug 2025 – Jul 2026. Times are local. Click a column to sort.
UA 2031 IAD 06:30 DEN 08:22 3h 52m 37 100% 0.0% –
UA 2035 IAD 06:30 DEN 08:22 3h 52m 35 94% 0.0% 24 min
UA 792 IAD 08:15 DEN 10:10 3h 55m 37 95% 0.0% 228 min
UA 2768 IAD 08:15 DEN 10:10 3h 55m 35 86% 0.0% 22 min
UA 1865 IAD 10:13 DEN 12:05 3h 52m 149 93% 0.0% 161 min
UA 1587 IAD 12:48 DEN 14:42 3h 54m 291 92% 0.3% 83 min
UA 1126 IAD 14:35 DEN 16:29 3h 54m 93 82% 0.0% 57 min
UA 395 IAD 15:56 DEN 18:03 4h 07m 149 79% 0.0% 67 min
UA 599 IAD 17:41 DEN 19:45 4h 04m 258 74% 1.2% 80 min
UA 2667 IAD 19:20 DEN 21:27 4h 07m 62 74% 0.0% 73 min
UA 495 IAD 22:23 DEN 00:30 4h 07m 310 84% 0.3% 64 min

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 DEN 4h 04m 85% 0.5% 2,787 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