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Showing United only (incl. its regional partners)All airlines ×
4,048 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 95% depart on time. After 4 pm it’s 3 in 4.

Best time to leave 5–6 am 97% arrive on time from IAH
Best single flight UA 1617 IAH 08:05 → ORD 11:01 · 92% on time Avoid UA 2135 IAH 17:09 → ORD 20:05 · 68% 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
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IAH
97
96
93
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90
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82
87
77
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79
77
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66
82
76
% 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 1617 IAH 08:05 ORD 11:01 92%
UA 2182 IAH 07:24 ORD 10:20 89%
UA 2616 IAH 06:10 ORD 09:05 88%
UA 2124 IAH 09:35 ORD 12:29 86%
UA 2417 IAH 11:55 ORD 14:51 76%
· · ·
UA 1752 IAH 22:08 ORD 00:45 71%
UA 2197 IAH 18:44 ORD 21:40 69%
UA 2135 IAH 17:09 ORD 20:05 68%

All 13 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 1044 IAH 05:04 ORD 07:59 2h 55m 142 97% 0.0% 35 min
UA 2616 IAH 06:10 ORD 09:05 2h 55m 363 88% 1.1% 44 min
UA 2182 IAH 07:24 ORD 10:20 2h 56m 340 89% 0.0% 68 min
UA 1617 IAH 08:05 ORD 11:01 2h 56m 291 92% 0.7% 54 min
UA 2124 IAH 09:35 ORD 12:29 2h 54m 349 86% 0.3% 68 min
UA 2417 IAH 11:55 ORD 14:51 2h 56m 291 76% 0.7% 65 min
UA 2827 IAH 11:55 ORD 14:51 2h 56m 72 67% 1.4% 90 min
UA 2458 IAH 13:41 ORD 16:39 2h 58m 72 68% 0.0% 75 min
UA 699 IAH 14:30 ORD 17:22 2h 52m 37 68% 0.0% 103 min
UA 2135 IAH 17:09 ORD 20:05 2h 56m 158 68% 0.6% 73 min
UA 2197 IAH 18:44 ORD 21:40 2h 56m 279 69% 0.4% 80 min
UA 787 IAH 20:25 ORD 23:15 2h 50m 363 72% 0.8% 85 min
UA 1752 IAH 22:08 ORD 00:45 2h 37m 239 71% 0.4% 99 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 ORD 2h 48m 79% 0.7% 4,048 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