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4,294 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 9 in 10 depart on time. After 4 pm it’s 2 in 3.

Best time to leave 8–9 am 88% arrive on time from IAH
Best single flight DL 1417 IAH 07:00 → LGA 11:33 · 88% on time Avoid UA 334 IAH 16:15 → LGA 20:59 · 61% 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).

6
7
8
9
10
11
12
13
14
15
16
17
18
19
IAH
88
90
91
83
82
90
72
69
66
67
68
67
53
% 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
New York flights leaving IAH 8–9 am: 1Close ×
UA 2133 IAH 08:05 LGA 12:40 3h 35m 37 80% 2.7% 65 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.
Delta 1,345 78% 4.5% 98 min
United (incl. SkyWest, Mesa) 2,683 73% 2.5% 75 min
Spirit 266 62% 6.4% 79 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.
DL 1417 IAH 07:00 LGA 11:33 88%
DL 2140 IAH 10:53 LGA 15:32 82%
UA 678 IAH 09:47 LGA 14:29 77%
UA 2181 IAH 12:00 LGA 16:44 66%
UA 334 IAH 16:15 LGA 20:59 61%
All 16 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.
Delta IAH LGA 3h 33m 78% 4.5% 1,345 Flying now
United IAH LGA 3h 35m 73% 2.5% 2,683 Flying now
Spirit IAH LGA 3h 28m 62% 6.4% 266 Not 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