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3,277 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 7 in 10.

Best time to leave 7–8 am 91% arrive on time from DCA
Best single flight UA 1450 DCA 06:00 → IAH 08:13 · 93% on time Avoid UA 1785 DCA 16:59 → IAH 19:27 · 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
20
DCA
92
91
93
87
88
90
71
80
60
75
71
% 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 DCA 7–8 am: 1Close ×
AA 5467flown by PSA DCA 07:59 IAH 10:18 3h 19m 24 70% 4.2% 61 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 2,406 84% 0.8% 87 min
American (incl. PSA, Republic) 871 73% 5.5% 69 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 1450 DCA 06:00 IAH 08:13 93%
UA 697 DCA 08:20 IAH 10:41 91%
UA 382 DCA 12:59 IAH 15:18 91%
UA 2190 DCA 10:58 IAH 13:19 86%
UA 1381 DCA 14:55 IAH 17:14 78%
· · ·
UA 1785 DCA 16:59 IAH 19:27 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 DCA IAH 3h 22m 84% 0.8% 2,406 Flying now
American DCA IAH 3h 37m 73% 5.5% 871 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