ON TIMEBOARD

UA 2142 on time

United Airlines 2142: Nashville to San Francisco at 4:59 p.m.; San Francisco to San Diego at 10:40 p.m. (past 12 months). Figures below the title are for BNA → SFO, its busiest leg

On time
60%
233 flights · likely 53–66%
Cancelled
0.0%
of scheduled flights
Typical arrival
+6 min
median vs schedule
When late
+64 min
average delay
Similar flights
56%
UA, same route & hour

About 1 in 2 UA 2142 flights from Nashville arrived 15+ minutes late, diverted or cancelled over the past year (40%); 0.0% were cancelled. The typical flight landed 6 minutes late.

UA 2142: BNA → SFO

Scheduled to leave Nashville at 4:59 p.m. local time. Over the past year it arrived on time 60% of the time (233 flights), better than other UA flights on the route at that hour (56%). Last seen in the data Aug 10, 2026.

Usually United Airlines's last flight of the day from Nashville to San Francisco (100% of days). United Airlines's last BNA–SFO flight was cancelled 0.3% of the time, against 1.0% for its earlier ones. If it's cancelled, the next United Airlines flight is usually around 6:31 a.m. the next morning.

Month by month

20%60%100%Sep 2025: 85% on time (26 flights)85SepOct 2025: 67% on time (21 flights)67OctNov 2025: 72% on time (18 flights)72NovDec 2025: 69% on time (26 flights)69DecJan 2026: too few flights (8 flights)JanFeb 2026: too few flights (7 flights)FebMar 2026: 63% on time (27 flights)63MarApr 2026: 43% on time (30 flights)43AprMay 2026: 33% on time (24 flights)33MayJun 2026: 44% on time (18 flights)44JunJul 2026: 55% on time (20 flights)55JulAug 2026: too few flights (8 flights)Aug

By day of week

DayFlightsOn time
Monday4562%
Tuesday2282%
Wednesday19—
Thursday4161%
Friday4144%
Saturday2259%
Sunday4353%

Why it was late

Air traffic & airport (NAS) 57%Airline (crew, maintenance, ops) 20%Late inbound plane 19%Severe weather 3%

All flights BNA → SFO · Connecting off UA 2142? Check the risk

UA 2142: SFO → SAN

Scheduled to leave San Francisco at 10:40 p.m. local time. Over the past year it arrived on time 72% of the time (196 flights), in line with other UA flights on the route at that hour (74%). Last seen in the data Aug 10, 2026.

Usually United Airlines's last flight of the day from San Francisco to San Diego (100% of days). United Airlines's last SFO–SAN flight was cancelled 0.5% of the time, against 0.3% for its earlier ones. If it's cancelled, the next United Airlines flight is usually around 7:00 a.m. the next morning.

Month by month

40%70%100%Dec 2025: too few flights (13 flights)DecJan 2026: 73% on time (30 flights)73JanFeb 2026: 83% on time (24 flights)83FebMar 2026: 95% on time (20 flights)95MarApr 2026: 77% on time (30 flights)77AprMay 2026: 83% on time (23 flights)83MayJun 2026: 71% on time (17 flights)71JunJul 2026: 52% on time (29 flights)52JulAug 2026: too few flights (10 flights)Aug

By day of week

DayFlightsOn time
Monday2662%
Tuesday19—
Wednesday2488%
Thursday3474%
Friday3352%
Saturday2785%
Sunday3376%

Why it was late

Late inbound plane 38%Airline (crew, maintenance, ops) 33%Air traffic & airport (NAS) 17%Severe weather 12%

All flights SFO → SAN · Connecting off UA 2142? Check the risk

Questions

How often is UA 2142 from BNA to SFO late?

United Airlines 2142 from Nashville, TN to San Francisco, CA arrived 15 or more minutes late, was diverted or was cancelled on 40% of 233 scheduled flights between September 2025 and August 2026. 0.0% were cancelled.

How often is UA 2142 from SFO to SAN late?

United Airlines 2142 from San Francisco, CA to San Diego, CA arrived 15 or more minutes late, was diverted or was cancelled on 28% of 196 scheduled flights between September 2025 and August 2026. 0.0% 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.