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3,465 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 3 in 4.

Best time to leave 7–8 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).

5
6
7
8
9
10
11
12
13
14
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19
20
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IAD
95
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97
90
92
89
91
77
84
84
77
73
45
69
78
81
% 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.

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 2,787 85% 0.5% 70 min
Southwest 678 79% 0.9% 53 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 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 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
Southwest IAD DEN 3h 55m 79% 0.9% 678 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