UA4735 BUR → SFO

United Airlines · Burbank, CA to San Francisco, CA · 21 flights observed, 2026-02-12 to 2026-03-04 · 326 mi

This flight is usually on time, but has a real long-delay tail — typical (median) delay is -1 min, while the worst 10% run +91 min or later.

UA4735 covers more than one route in the data window — the stats below are for BUR → SFO, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
71%
Median delay
-1 min
90th percentile
+91 min
Cancellation rate
0%

How often is UA4735 on time?

Across 21 flights on BUR → SFO from 2026-02-12 to 2026-03-04, UA4735 arrived within 15 minutes of schedule 71% of the time. The median arrival delay was -1 min, and the worst 10% of flights arrived +91 min or later. 0% of flights were cancelled.

Delay distribution

Arrival delay for completed flights (excludes cancellations and diversions).

ArrivalFlightsShare
Early / on-time1571%
16-30 min314%
31-60 min00%
61-120 min210%
2+ hrs15%

Performance by month

MonthFlightsOn-timeAvg delay
2026-021771%+14 min
2026-03475%-4 min

Performance by day of week

DayFlightsOn-time
Mon3100%
Tue3100%
Wed367%
Thu367%
Fri367%
Sat367%
Sun333%

Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…