Flight number record

UA 1546

United Airlines · Los Angeles to Las Vegas

Route: LAX → LAS
Departs: 22:35
Flights: 284
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s UA 1546, check with United Airlines.

UA 1546 lands a B+, 6 points better than the national rate of 77.6%. About one flight in six arrives 15 minutes late or worse, and those flights are late by roughly 40 minutes on average. That is a workable record, not a spotless one. That rests on 284 flights, with a median arrival 5 minutes early.

Set against the rest of the country, UA 1546's record is 6 points better than the US average of 77.6%. That gap is worth roughly 61 fewer late arrivals for every thousand flights.

On time

83.7%

Arrivals under 15 minutes late, of 283 completed flights

Avg delay

42 min

Across delayed arrivals only, not all flights

Cancelled

0.35%

National rate is 1.81%

1 hour+ late

3.2%

National rate is 8.1%

These figures cover 284 flights between July 2025 and June 2026. The median arrival is 5 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.

Schedule

When UA 1546 flies

UA 1546 flies LAX to LAS without a single fixed slot. Its most common scheduled departure was 22:35, used on 126 of 284 flights, with 22:42 (41 flights) and 22:56 (30 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 22:35126 flights44.4%
Departs 22:4241 flights14.4%
Departs 22:5630 flights10.6%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.

A 22:35 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and UA 1546 runs 13 points better at 83.7%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

UA 1546 next to LAX to LAS

Every carrier on LAX to LAS combined arrived on time 76.5% of the time across 8,319 flights, so UA 1546 is 7 points ahead of it. United flew 1,572 flights on the same city pair under all its flight numbers, including this one, and those ran 83.6% on time. Across its whole network United Airlines managed 79.0%, which this flight beats by 5 points.

UA 1546 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 1546thin sample	284	83.7%	42 min	0.35%	B+
All United Airlines on LAX–LAS	1,572	83.6%	58 min	0.51%	B+
All carriers on LAX–LAS	8,319	76.5%	64 min	0.77%	B+
United Airlines, whole network	821,041	79.0%	72 min	1.01%	B

Across the year

UA 1546 quarter by quarter

UA 1546 did not run the same all year. Its best quarter was Oct–Dec 2025 at 90.7% on time and its weakest Jan–Mar 2026 at 78.2%, a swing of 13 points on roughly 71 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.

Jul–Sep 202567 flights82.1%
Oct–Dec 202586 flights90.7%
Jan–Mar 202679 flights78.2%
Apr–Jun 202652 flights82.7%

Scale runs 70% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, UA 1546 did best on Tuesday at 93.8% on time and worst on Thursday at 78.3%. Each day rests on about 41 flights, so a gap of 16 points is worth noticing but could still narrow in another year.

Delay causes

Why UA 1546 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 42% of the 1,948 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Late-arriving aircraft
42%
Carrier
31%
National Airspace System
27%

42% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 1,948 reported delay minutes here, that single category outweighs weather by 42 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 1,948 delay minutes reported on UA 1546.

Cancellations are rare at 0.35%, below the national 1.81% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 3.2% land an hour or more behind schedule, against 8.1% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.

The same number turns up on four other city pairs in the data, including SEA to LAX (68), BWI to LAX (66) and ORD to BWI (21), but none flew often enough under UA 1546 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to LAX to LAS only.

One caution: this is a thin sample. 284 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.

What to do with this

Booking UA 1546

For a booking, read UA 1546 as 83.7% on time with 0.35% cancelled over 284 flights. Those are rates from the past twelve months, not a forecast for any particular day.

Where to go next

A flight number here means United Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.

Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures