ON TIMEBOARD
IAH Houston / HNL Honolulu

IAH → HNL on time

Houston Bush Intercontinental (Houston, TX) to Honolulu (Honolulu, HI). Every scheduled flight, September 2025 to August 2026.

On time
78%
arrived < 15 min late
Cancelled
0.8%
365 flights
Typical arrival
−3 min
median vs schedule
When late
+42 min
average delay
Flights / day
1
1 airline

78% of flights from Houston to Honolulu arrived on time over the past 12 months. That is about the typical U.S. route. The 9 a.m. departures ran on time 81% of the time; the 10 a.m. ones 76%. 4% of flights arrived more than an hour late or not at all.

How late?

The on-time rate treats a flight 20 minutes late the same as one 5 hours late. Here's the split for IAH → HNL: when a flight was late, it was under 45 minutes late 74% of the time. About 1 in 33 flights landed an hour or more late, and 1 in 365 three hours or more; 0.8% were cancelled outright.

Share of all 365 scheduled flights, past 12 months, by arrival time against schedule.

By airline

AirlineFlightsOn timeCancelledTypical arrival1h+ lateAvg when lateOperated by
United Airlines36578%0.8%−3 min3.0%+42 minUnited Airlines

Airline = the name on the ticket. Regional flights (e.g. "Delta Connection") count under the ticketing airline, and the operator is listed.

Best time of day to fly

On-time rate by scheduled departure hour (local time at IAH). Delays build through the day as late planes knock on, so early flights usually do best.

40%70%100%9 a.m. departures: 81% on time (186 flights)819a10 a.m. departures: 76% on time (179 flights)7610a
IAH → HNL, share of flights arriving on time, by departure hour. Hours with under 100 flights are greyed out.
82%+ on time76–82%68–76%under 68%too few flights

By month

Each calendar month pooled over 2023–2026. Best: May (65%). Worst: July (59%).

40%70%100%Jan: too few flights (93 flights)JanFeb: too few flights (85 flights)FebMar: too few flights (93 flights)MarApr: too few flights (90 flights)AprMay: 65% on time (110 flights)65MayJun: 64% on time (124 flights)64JunJul: 59% on time (128 flights)59JulAug: too few flights (93 flights)AugSep: too few flights (90 flights)SepOct: too few flights (93 flights)OctNov: too few flights (90 flights)NovDec: too few flights (93 flights)Dec

By day of week

DayFlightsOn timeCancelled
Monday53——
Tuesday52——
Wednesday52——
Thursday52——
Friday52——
Saturday52——
Sunday52——

Why flights were late

Share of delay minutes on flights 15+ minutes late, as reported to BTS by the airlines.

Airline (crew, maintenance, ops) 43%Air traffic & airport (NAS) 32%Late inbound plane 16%Severe weather 9%

Cancellations: airline 2 · weather 1

Month by month

Not enough months with data to draw a trend.

Flight numbers on this route

Regular flights with at least 120 scheduled trips in the past year. Sorted by departure time.

FlightDepartsFlightsOn timeCancelledTypical arrivalOperated by
UA 25310:10 a.m.36578%0.8%−3 minUnited Airlines

Questions

How often are flights from IAH to HNL on time?

78% of 365 scheduled flights from Houston, TX to Honolulu, HI arrived within 15 minutes of schedule between September 2025 and August 2026. 0.8% were cancelled.

What is the best time of day to fly IAH to HNL?

Flights scheduled to leave at 9 a.m. were the most reliable (81% on time). The 10 a.m. departures were the least (76%).

What month has the most delays from IAH to HNL?

July (59% on time). The best month is May (65%), over 2023–2026.

Related

Domestic flights by the airlines that report to the U.S. DOT, plus their regional partners. "On time" means arriving less than 15 minutes after schedule; cancelled and diverted flights count as not on time. Past performance is a guide, not a forecast. Method.