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United Airlines / DEN → SBA

UA 671 on time

United Airlines 671: Denver to Santa Barbara at 11:26 a.m.; Jacksonville to Denver at 8:15 a.m. (past 12 months). Figures below the title are for DEN → SBA, its busiest leg

On time
82%
320 flights · likely 77–85%
Cancelled
0.0%
of scheduled flights
Typical arrival
−2 min
median vs schedule
When late
+52 min
average delay
Similar flights
81%
UA, same route & hour

About 1 in 5 UA 671 flights from Denver arrived 15+ minutes late, diverted or cancelled over the past year (18%); 0.0% were cancelled. The typical flight landed 2 minutes early.

UA 671: DEN → SBA

Scheduled to leave Denver at 11:26 a.m. local time. Over the past year it arrived on time 82% of the time (320 flights), in line with other UA flights on the route at that hour (81%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Sep 2025: too few flights (6 flights)SepOct 2025: 77% on time (31 flights)77OctNov 2025: 83% on time (30 flights)83NovDec 2025: 77% on time (31 flights)77DecJan 2026: 77% on time (31 flights)77JanFeb 2026: too few flights (11 flights)FebMar 2026: 93% on time (27 flights)93MarApr 2026: 83% on time (30 flights)83AprMay 2026: 77% on time (31 flights)77MayJun 2026: 73% on time (30 flights)73JunJul 2026: 77% on time (31 flights)77JulAug 2026: 87% on time (31 flights)87Aug

By day of week

DayFlightsOn time
Monday4676%
Tuesday4593%
Wednesday4580%
Thursday4683%
Friday4676%
Saturday4687%
Sunday4676%

Why it was late

Late inbound plane 38%Airline (crew, maintenance, ops) 36%Air traffic & airport (NAS) 25%Severe weather 1%

All flights DEN → SBA · Connecting off UA 671? Check the risk

UA 671: JAX → DEN

Scheduled to leave Jacksonville at 8:15 a.m. local time. Over the past year it arrived on time 89% of the time (196 flights), in line with other UA flights on the route at that hour (91%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Feb 2026: too few flights (14 flights)FebMar 2026: 86% on time (29 flights)86MarApr 2026: 93% on time (30 flights)93AprMay 2026: 90% on time (31 flights)90MayJun 2026: 90% on time (30 flights)90JunJul 2026: 84% on time (31 flights)84JulAug 2026: 87% on time (31 flights)87Aug

By day of week

DayFlightsOn time
Monday2997%
Tuesday2688%
Wednesday2588%
Thursday2990%
Friday2990%
Saturday2990%
Sunday2979%

Why it was late

Airline (crew, maintenance, ops) 56%Late inbound plane 34%Air traffic & airport (NAS) 9%

All flights JAX → DEN · Connecting off UA 671? Check the risk

Questions

How often is UA 671 from DEN to SBA late?

United Airlines 671 from Denver, CO to Santa Barbara, CA arrived 15 or more minutes late, was diverted or was cancelled on 18% of 320 scheduled flights between September 2025 and August 2026. 0.0% were cancelled.

How often is UA 671 from JAX to DEN late?

United Airlines 671 from Jacksonville, FL to Denver, CO arrived 15 or more minutes late, was diverted or was cancelled on 11% 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.