Flight number record
UA 1546
United Airlines · Los Angeles to Las Vegas
- Route
- LAX → LAS
- Departs
- 22:35
- Flights
- 259
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 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 77.3%. About one flight in six arrives 15 minutes late or worse, and those flights are late by roughly 40 minutes on average. That rests on 259 flights, with a median arrival 4 minutes early.
Set against the rest of the country, UA 1546's record is 6 points better than the US average of 77.3%. That gap is worth roughly 60 fewer late arrivals for every thousand flights.
Key figures
On time
83.3%
Arrivals under 15 minutes late, of 258 completed flights
Avg delay
39 min
Across delayed arrivals only, not all flights
Cancelled
0.39%
National rate is 1.89%
1 hour+ late
2.7%
National rate is 8.3%
These figures cover 259 flights between September 2025 and August 2026. The median arrival is 4 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.
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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 71 of 259 flights, with 22:59 (51 flights) and 22:42 (41 flights) next.
- Departs 22:3571 flights27.4%
- Departs 22:5951 flights19.7%
- Departs 22:4241 flights15.8%
Scale runs 0% to 100%.
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 70.1%, and UA 1546 runs 13 points better at 83.3%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
UA 1546 next to LAX to LAS
Every carrier on LAX to LAS combined arrived on time 75.8% of the time across 8,202 flights, so UA 1546 is 8 points ahead of it. United flew 1,574 flights on the same city pair under all its flight numbers, including this one, and those ran 83.1% on time. Across its whole network United Airlines managed 78.8%, which this flight beats by 5 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 1546thin sample | 259 | 83.3% | 39 min | 0.39% | B+ |
| All United Airlines on LAX–LAS | 1,574 | 83.1% | 55 min | 0.51% | B+ |
| All carriers on LAX–LAS | 8,202 | 75.8% | 63 min | 0.77% | B+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | 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 Jul–Sep 2026 at 74.3%, a swing of 16 points on roughly 65 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 20257 flights—
- Oct–Dec 202586 flights90.7%
- Jan–Mar 202679 flights78.2%
- Apr–Jun 202652 flights82.7%
- Jul–Sep 202635 flights74.3%
Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.
By weekday, UA 1546 did best on Tuesday at 93.3% on time and worst on Monday at 78.9%. Each day rests on about 37 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 1546 runs when it is late
The 43 late arrivals split 21 under half an hour, 15 between 30 and 60 minutes, and 7 an hour or more.
- 15+ min early45 flights17.4%
- Within 15 min170 flights65.9%
- 15–29 min late21 flights8.1%
- 30–59 min late15 flights5.8%
- 1–2 hours late6 flights2.3%
- 2+ hours late1 flights0.4%
Scale runs 0% to 100%.
Share of 258 completed flights by arrival against schedule.
6 of 39 late departures made up the time and arrived on time, 15% of them. 10 flights left on time and still arrived late.
The worst days
Worst days for UA 1546
The latest arrival of the period was on 2 February 2026, 2 hours 3 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across February, June, August and July, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 2 February 2026 | 2 hours 3 minutes | Carrier |
| 18 June 2026 | 1 hour 27 minutes | National Airspace System |
| 30 June 2026 | 1 hour 24 minutes | Late-arriving aircraft |
| 4 August 2026 | 1 hour 22 minutes | Carrier |
| 16 July 2026 | 1 hour 18 minutes | National Airspace System |
Delay causes
Why UA 1546 runs late
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 1,657 reported delay minutes.
- 36%Carrier
- 33%National Airspace System
- 31%Late-arriving aircraft
The largest share of delay minutes, 36%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 601 of the 1,657 delay minutes reported here. The split is drawn from 1,657 delay minutes reported on UA 1546.
Cancellations are rare at 0.39%, below the national 1.89% 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 2.7% land an hour or more behind schedule, against 8.3% 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 BWI to LAX (110), SEA to LAX (55) 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. 259 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 83.3% on time with 0.39% cancelled over 259 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- LAX to LAS, every carrier and departure
- LAS to LAX, the return direction
- Delta Air Lines 2120 on the same route65.4%
- Delta Air Lines 2253 on the same route95.3%
- Delta Air Lines 2653 on the same route78.2%
- American Airlines 2785 on the same route72.5%
- Frontier Airlines 3292 on the same route79.2%
- United Airlines 1006 on the same route91.2%
- Los Angeles International (LAX) delay statistics
- Harry Reid International (LAS) delay statistics
- United Airlines on-time record
- Every United Airlines flight number with a record
- The most and least reliable flight numbers in the US
- Worst months to fly in the US, ranked by the data
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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.