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4,301 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 93% depart on time. After 4 pm it’s 2 in 3.

Best time to leave 7–8 am 91% arrive on time from LGA
Best single flight UA 2371 LGA 06:00 → IAH 08:44 · 93% on time Avoid DL 2109 LGA 18:29 → IAH 21:44 · 65% 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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LGA
90
92
65
% 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.

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. SkyWest, Mesa) 2,683 79% 2.7% 86 min
Spirit 273 79% 4.0% 67 min
Delta 1,345 76% 4.3% 88 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 2371 LGA 06:00 IAH 08:44 93%
DL 2140 LGA 07:05 IAH 09:53 89%
UA 2617 LGA 10:15 IAH 13:06 86%
DL 2099 LGA 10:54 IAH 13:43 76%
DL 2930 LGA 13:50 IAH 16:45 73%
· · ·
DL 2109 LGA 18:29 IAH 21:44 65%
All 17 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 LGA IAH 4h 05m 79% 2.7% 2,683 Flying now
Delta LGA IAH 3h 56m 76% 4.3% 1,345 Flying now
Spirit LGA IAH 4h 02m 79% 4.0% 273 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