ON TIMEBOARD

GUM → HNL on time

Antonio B. Won Pat (Guam, TT) to Honolulu (Honolulu, HI). Every scheduled flight, September 2025 to August 2026.

On time
86%
arrived < 15 min late
Cancelled
2.7%
365 flights
Typical arrival
−6 min
median vs schedule
When late
+78 min
average delay
Flights / day
1
1 airline

86% of flights from Guam to Honolulu arrived on time over the past 12 months. That is better than the typical U.S. route. 6% 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 GUM → HNL: when a flight was late, it was under 45 minutes late 59% of the time. About 1 in 30 flights landed an hour or more late, and 1 in 183 three hours or more; 2.7% 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 Airlines36586%2.7%−6 min3.3%+78 minUnited Airlines

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

By month

Each calendar month pooled over 2023–2026.

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: too few flights (93 flights)MayJun: too few flights (90 flights)JunJul: too few flights (93 flights)JulAug: 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) 72%Air traffic & airport (NAS) 15%Late inbound plane 13%

Cancellations: weather 6 · airline 4

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 2007:05 a.m.36586%2.7%−6 minUnited Airlines

Questions

How often are flights from GUM to HNL on time?

86% of 365 scheduled flights from Guam, TT to Honolulu, HI arrived within 15 minutes of schedule between September 2025 and August 2026. 2.7% were cancelled.

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.