1,450 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

No clear winner: United’s IAH → HSV flights land within a few points of 4 in 5 on time whatever the hour.

Best time to leave 9–10 am 93% arrive on time from IAH

Best single flight UA 4315 IAH 10:05 → HSV 12:08 · 88% on time Avoid UA 4946 IAH 15:05 → HSV 17:08 · 77% 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).

IAH

% 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

Huntsville flights leaving IAH 1–2 pm: 1Close ×


UA 4879flown by CommuteAir	IAH 13:22	HSV 15:24	2h 02m	109	77%	1.8%	66 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. CommuteAir, SkyWest)	1,450	81%	0.8%	73 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 4315flown by CommuteAir	IAH 10:05	HSV 12:08	88%
UA 4292flown by CommuteAir	IAH 19:50	HSV 21:53	80%
UA 4946flown by CommuteAir	IAH 15:05	HSV 17:08	77%

All 6 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	HSV	2h 03m	81%	0.8%	1,450	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