UA353 BOS → LAX

United Airlines · Boston, MA to Los Angeles, CA · 37 flights observed, 2025-08-19 to 2025-09-24 · 2,611 mi

This flight's reliability varies a lot by day of week — 83% on-time on Tuesdays vs. 20% on Fridays.

UA353 covers more than one route in the data window — the stats below are for BOS → LAX, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
62%
Median delay
+2 min
90th percentile
+71 min
Cancellation rate
0%

How often is UA353 on time?

Across 37 flights on BOS → LAX from 2025-08-19 to 2025-09-24, UA353 arrived within 15 minutes of schedule 62% of the time. The median arrival delay was +2 min, and the worst 10% of flights arrived +71 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time2362%
16-30 min822%
31-60 min25%
61-120 min25%
2+ hrs25%

Performance by month

MonthFlightsOn-timeAvg delay
2025-081369%+1 min
2025-092458%+26 min

Performance by day of week

DayFlightsOn-time
Mon560%
Tue683%
Wed683%
Thu560%
Fri520%
Sat560%
Sun560%

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