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Showing United only (incl. its regional partners)All airlines ×
997 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

No clear winner: United’s IAH → AMA flights land within a few points of 85% on time whatever the hour.

Best time to leave 9–10 am 88% arrive on time from IAH
Best single flight UA 4821 IAH 09:30 → AMA 11:21 · 88% on time Avoid UA 4817 IAH 12:25 → AMA 14:21 · 83% 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).

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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

Pick an hour to see this route’s flights leaving then.

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 4821flown by CommuteAir IAH 09:30 AMA 11:21 88%
UA 4839flown by CommuteAir IAH 20:34 AMA 22:30 84%
UA 4817flown by CommuteAir IAH 12:25 AMA 14:21 83%

All 3 United flights in the current schedule

Every flight that flew in the Jun 6 – Jul 31, 2026 schedule, with its record over Aug 2025 – Jul 2026. Times are local. Click a column to sort.

UA 4821flown by CommuteAir IAH 09:30 AMA 11:21 1h 51m 288 88% 0.7% 79 min
UA 4817flown by CommuteAir IAH 12:25 AMA 14:21 1h 56m 158 83% 0.0% 62 min
UA 4839flown by CommuteAir IAH 20:34 AMA 22:30 1h 56m 360 84% 0.6% 118 min

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 AMA 2h 01m 85% 0.6% 997 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