ON TIMEBOARD
United Airlines / SFO → ORD

UA 1482 on time

United Airlines 1482: San Francisco to Chicago at 4:55 p.m.; Seattle to San Francisco at 10:29 a.m. (past 12 months). Figures below the title are for SFO → ORD, its busiest leg

On time
78%
274 flights · likely 72–82%
Cancelled
0.4%
of scheduled flights
Typical arrival
−10 min
median vs schedule
When late
+81 min
average delay
Similar flights
74%
UA, same route & hour

About 1 in 4 UA 1482 flights from San Francisco arrived 15+ minutes late, diverted or cancelled over the past year (22%); 0.4% were cancelled. The typical flight landed 10 minutes early.

UA 1482: SFO → ORD

Scheduled to leave San Francisco at 4:55 p.m. local time. Over the past year it arrived on time 78% of the time (274 flights), better than other UA flights on the route at that hour (74%). Last seen in the data Aug 10, 2026.

Month by month

40%70%100%Sep 2025: 93% on time (30 flights)93SepOct 2025: 79% on time (28 flights)79OctNov 2025: 85% on time (20 flights)85NovDec 2025: 53% on time (15 flights)53DecJan 2026: 73% on time (26 flights)73JanFeb 2026: 85% on time (27 flights)85FebMar 2026: 71% on time (31 flights)71MarApr 2026: 77% on time (30 flights)77AprMay 2026: 75% on time (20 flights)75MayJun 2026: too few flights (6 flights)JunJul 2026: 77% on time (31 flights)77JulAug 2026: too few flights (10 flights)Aug

By day of week

DayFlightsOn time
Monday4365%
Tuesday3784%
Wednesday3789%
Thursday4180%
Friday4173%
Saturday3476%
Sunday4178%

Why it was late

Late inbound plane 57%Air traffic & airport (NAS) 34%Airline (crew, maintenance, ops) 9%Severe weather 1%

All flights SFO → ORD · Connecting off UA 1482? Check the risk

UA 1482: SEA → SFO

Scheduled to leave Seattle at 10:29 a.m. local time. Over the past year it arrived on time 66% of the time (256 flights), worse than other UA flights on the route at that hour (81%). Last seen in the data Aug 31, 2026.

Month by month

20%60%100%Mar 2025: 86% on time (21 flights)86MarSep 2025: too few flights (5 flights)SepOct 2025: 71% on time (21 flights)71OctDec 2025: 77% on time (30 flights)77DecJan 2026: 87% on time (31 flights)87JanFeb 2026: 86% on time (28 flights)86FebMar 2026: 90% on time (31 flights)90MarApr 2026: 67% on time (30 flights)67AprMay 2026: 50% on time (20 flights)50MayJun 2026: too few flights (6 flights)JunJul 2026: 29% on time (31 flights)29JulAug 2026: 30% on time (23 flights)30Aug

By day of week

DayFlightsOn time
Monday3858%
Tuesday3672%
Wednesday3577%
Thursday3959%
Friday3946%
Saturday3187%
Sunday3868%

Why it was late

Air traffic & airport (NAS) 71%Late inbound plane 22%Airline (crew, maintenance, ops) 8%

All flights SEA → SFO · Connecting off UA 1482? Check the risk

Questions

How often is UA 1482 from SFO to ORD late?

United Airlines 1482 from San Francisco, CA to Chicago, IL arrived 15 or more minutes late, was diverted or was cancelled on 22% of 274 scheduled flights between September 2025 and August 2026. 0.4% were cancelled.

How often is UA 1482 from SEA to SFO late?

United Airlines 1482 from Seattle, WA to San Francisco, CA arrived 15 or more minutes late, was diverted or was cancelled on 34% of 256 scheduled flights between September 2025 and August 2026. 0.4% 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.