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Showing United only (incl. its regional partners)All airlines ×
1,678 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

No clear winner: United’s MEM → IAH flights land within a few points of 83% on time whatever the hour.

Best time to leave 9–10 am 90% arrive on time from MEM
Best single flight UA 4003 MEM 09:00 → IAH 10:54 · 92% on time Avoid UA 5798 MEM 15:23 → IAH 17:25 · 71% 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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MEM
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% 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 4003flown by Mesa MEM 09:00 IAH 10:54 92%
UA 537 MEM 07:00 IAH 08:46 84%
UA 5798flown by SkyWest MEM 15:23 IAH 17:25 71%

All 5 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 537 MEM 07:00 IAH 08:46 1h 46m 169 84% 1.2% 57 min
UA 4003flown by Mesa MEM 09:00 IAH 10:54 1h 53m 158 92% 0.6% 79 min
UA 5525flown by SkyWest MEM 11:46 IAH 13:40 1h 54m 71 80% 0.0% 53 min
UA 5798flown by SkyWest MEM 15:23 IAH 17:25 2h 02m 251 71% 0.4% 84 min
UA 6250flown by Mesa MEM 18:53 IAH 20:49 1h 56m 42 79% 0.0% 70 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 MEM IAH 2h 00m 83% 1.3% 1,678 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