Flight profile · United Airlines

UA405

Denver (DEN) to Los Angeles (LAX) · scheduled 9:45 AM – 11:31 AM

FlyerIntel does not track flights in the air. This page describes how UA405 has historically performed, which is a different and more useful question when you are deciding what to book. For today’s status, check with United Airlines.

How UA405 performs

1,022 operations, 2023-07-01 to 2026-06-30.

On-time arrivals
87.9%
887 of 1,009 completed
Cancellation rate
1.27%
13 cancelled
Median arrival delay
-9 min
Average -3.1 min
Severe delays
3.1%
Arrived 60+ minutes late
Delay when late
54 min
Average, when 15+ min late
Departure punctuality
88.6%
Left the gate on time

UA405 arrived on time 87.9% of the time, against 79.2% for all DENLAX flights — this specific departure is 8.7 percentage points better than the route as a whole. Against United Airlines’s own flights on this route it is 5.8 points better.

Source: US DOT Bureau of Transportation Statistics · 1,022 operations between 2023-07-01 to 2026-06-30

Against the rest of the route

On timeCancelledMedian delaySevereFlights
UA40587.9%1.27%-9 min3.1%1,022
United Airlines on DENLAX82.1%0.73%-7 min6.1%9,465
All DENLAX flights79.2%0.70%-6 min6.9%23,079

Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30

By day of week

Does UA405 run worse on particular days?

Monday89.7%
Tuesday91.0%
Wednesday92.3%
Thursday85.3%
Friday85.4%
Saturday85.5%
Sunday86.1%

Wednesday is historically the most reliable day and Thursday the least, a gap of 7.0 percentage points.

Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30 · Days with fewer than 120 operations are not scored.

Other routes UA405 has flown

A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.

RouteOperatedFlightsOn time
ICTORD Wichita to Chicago2026-02-042026-02-041
DENIAD Denver to Washington2025-06-262025-07-3136
LAXBOS Los Angeles to Boston2024-10-272025-05-2154
MKEDEN Milwaukee to Denver2024-05-242024-06-2634

Because the same number has served different journeys, the statistics above describe only the route UA405 currently operates. Blending them would produce an average of two different flights.

Data and methodology

Calculated by FlyerIntel from 1,022 records of UA405 operating DENLAX, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.

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