tailodds FORECAST
Tickets
Any day
9,068 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 92% arrive on time from IAH, 91% arrive on time from HOU
Best airport pair IAH → IAD 82% on time, fewest cancelled (0.4%), 1,871 flights
Best single flight UA 1549 IAH 07:20 → IAD 11:28 · 92% 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).

5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
IAH
79
87
95
83
86
79
84
77
85
72
62
71
70
77
HOU
92
96
88
92
84
78
79
67
64
58
55
63
57
49
46
% 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
Washington flights leaving IAH 10–11 am: 1Close ×
AA 5526flown by PSA IAH 10:48 DCA 15:03 3h 15m 26 62% 11.5% 94 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. SkyWest, Mesa) 5,183 79% 0.6% 66 min
Spirit IAH→BWI only 332 79% 1.8% 60 min
American (incl. PSA, Republic) IAH→DCA only 873 74% 5.6% 87 min
Southwest 2,531 73% 1.5% 51 min
Frontier IAH→BWI only 149 – 5.4% 73 min

Dimmed: fewer than 150 flights in the year, too few to rank.

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 1549 IAH 07:20 IAD 11:28 92%
UA 2311 IAH 09:47 DCA 13:57 84%
UA 2366 IAH 12:13 IAD 16:30 82%
UA 1720 IAH 12:16 BWI 16:30 81%
UA 654 IAH 11:55 DCA 16:03 75%
· · ·
UA 1373 IAH 18:32 IAD 22:43 73%
UA 2224 IAH 19:50 DCA 23:59 70%
UA 1627 IAH 18:05 DCA 22:15 66%
All 37 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 IAD 3h 08m 82% 0.4% 1,871 Flying now
United IAH BWI 3h 07m 81% 0.9% 906 Flying now
United IAH DCA 3h 08m 76% 0.7% 2,406 Flying now
Southwest HOU BWI 2h 55m 75% 1.4% 1,479 Flying now
American IAH DCA 3h 10m 74% 5.6% 873 Flying now
Southwest HOU DCA 2h 55m 71% 1.7% 1,052 Flying now
Frontier IAH BWI 3h 15m 52% 5.4% 149 Flying now
Spirit IAH BWI 2h 58m 79% 1.8% 332 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