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624 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

No clear winner: United’s IAH → ASE flights land within a few points of 3 in 4 on time whatever the hour.

Best time to leave 6–7 pm 88% arrive on time from IAH
Best single flight UA 5917 IAH 16:55 → ASE 18:45 · 80% on time Avoid UA 5814 IAH 09:50 → ASE 11:40 · 72% 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).

9
10
11
12
13
14
15
16
17
18
IAH
78
79
77
61
84
% 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 (incl. SkyWest) 624 75% 2.7% 93 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 5917flown by SkyWest IAH 16:55 ASE 18:45 80%
UA 5814flown by SkyWest IAH 09:50 ASE 11:40 72%

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 ASE 3h 17m 75% 2.7% 624 Flying now

Alternatives with one stop

All connections →
UnitedDetails → IAH 05:15 → DEN 06:47UA 1874 58m Denver DEN 07:45 → ASE 08:46UA 5444 · flown by SkyWest 4h 31m 96% 80%
UnitedDetails → IAH 07:20 → DEN 08:52UA 1575 58m Denver DEN 09:50 → ASE 10:51UA 5782 · flown by SkyWest 4h 31m 76% 59%
UnitedDetails → IAH 12:33 → DEN 14:17UA 2168 50m Denver DEN 15:07 → ASE 16:08UA 5773 · flown by SkyWest 4h 35m 81% 59%
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