ON TIMEBOARD

UA 1509 on time

United Airlines 1509: San Francisco to Honolulu at 4:45 p.m. (past 12 months)

On time
83%
365 flights · likely 79–86%
Cancelled
0.3%
of scheduled flights
Typical arrival
−9 min
median vs schedule
When late
+76 min
average delay
Similar flights
83%
UA, same route & hour

About 1 in 6 UA 1509 flights from San Francisco arrived 15+ minutes late, diverted or cancelled over the past year (17%); 0.3% were cancelled. The typical flight landed 9 minutes early.

UA 1509: SFO → HNL

Scheduled to leave San Francisco at 4:45 p.m. local time. Over the past year it arrived on time 83% of the time (365 flights), in line with other UA flights on the route at that hour (83%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Sep 2025: 80% on time (30 flights)80SepOct 2025: 94% on time (31 flights)94OctNov 2025: 97% on time (30 flights)97NovDec 2025: 87% on time (31 flights)87DecJan 2026: 87% on time (31 flights)87JanFeb 2026: 89% on time (28 flights)89FebMar 2026: 87% on time (31 flights)87MarApr 2026: 73% on time (30 flights)73AprMay 2026: 84% on time (31 flights)84MayJun 2026: 87% on time (30 flights)87JunJul 2026: 71% on time (31 flights)71JulAug 2026: 58% on time (31 flights)58Aug

By day of week

DayFlightsOn time
Monday5377%
Tuesday5290%
Wednesday5287%
Thursday5285%
Friday5283%
Saturday5283%
Sunday5275%

Why it was late

Late inbound plane 58%Airline (crew, maintenance, ops) 35%Air traffic & airport (NAS) 8%

All flights SFO → HNL · Connecting off UA 1509? Check the risk

Questions

How often is UA 1509 from SFO to HNL late?

United Airlines 1509 from San Francisco, CA to Honolulu, HI arrived 15 or more minutes late, was diverted or was cancelled on 17% of 365 scheduled flights between September 2025 and August 2026. 0.3% were cancelled.

Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check United Airlines for today's flight. Method.