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3,279 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 2 in 3.

Best time to leave 7–8 am 94% arrive on time from IAH
Best single flight UA 2311 IAH 09:47 → DCA 13:57 · 84% on time Avoid UA 1627 IAH 18:05 → DCA 22:15 · 66% 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).

6
7
8
9
10
11
12
13
14
15
16
17
18
19
IAH
89
94
84
87
77
85
77
68
60
64
68
% 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 2,406 76% 0.7% 68 min
American (incl. PSA, Republic) 873 74% 5.6% 87 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 2311 IAH 09:47 DCA 13:57 84%
UA 654 IAH 11:55 DCA 16:03 75%
UA 2224 IAH 19:50 DCA 23:59 70%
UA 1627 IAH 18:05 DCA 22:15 66%
All 15 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 IAH DCA 3h 08m 76% 0.7% 2,406 Flying now
American IAH DCA 3h 10m 74% 5.6% 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