Flight number record

UA 2047

United Airlines · Las Vegas to San Francisco

Route: LAS → SFO
Departs: 16:05
Flights: 357
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s UA 2047, check with United Airlines.

UA 2047 sits in the middle of the pack with a C+. About seven flights in ten arrive on time by the DOT's definition, 7 points worse than the national rate of 77.6%. The late ones land about an hour behind schedule. That rests on 357 flights, with a median arrival 5 minutes early.

The national on-time rate over the same period is 77.6%, so UA 2047 runs 7 points behind the country as a whole. Across a thousand flights that is about 67 extra late arrivals.

On time

70.9%

Arrivals under 15 minutes late, of 357 completed flights

Avg delay

67 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.81%

1 hour+ late

10.9%

National rate is 8.1%

These figures cover 357 flights between July 2025 and June 2026. Beyond the headline rate, 10.9% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

Schedule

When UA 2047 flies

UA 2047 flies LAS to SFO without a single fixed slot. Its most common scheduled departure was 16:05, used on 72 of 357 flights, with 15:50 (66 flights) and 16:09 (49 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 16:0572 flights20.2%
Departs 15:5066 flights18.5%
Departs 16:0949 flights13.7%

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 16:05 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and UA 2047 runs level with that at 70.9%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

UA 2047 next to LAS to SFO

Every carrier on LAS to SFO combined arrived on time 62.8% of the time across 6,060 flights, so UA 2047 is 8 points ahead of it. United flew 2,756 flights on the same city pair under all its flight numbers, including this one, and those ran 67.5% on time. Across its whole network United Airlines managed 79.0%, which this flight trails by 8 points.

UA 2047 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 2047thin sample	357	70.9%	67 min	0.00%	C+
All United Airlines on LAS–SFO	2,756	67.5%	61 min	0.44%	C+
All carriers on LAS–SFO	6,060	62.8%	59 min	0.68%	D+
United Airlines, whole network	821,041	79.0%	72 min	1.01%	B

Across the year

UA 2047 quarter by quarter

UA 2047 did not run the same all year. Its best quarter was Jan–Mar 2026 at 84.3% on time and its weakest Apr–Jun 2026 at 49.4%, a swing of 35 points on roughly 89 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 202592 flights78.3%
Oct–Dec 202591 flights70.3%
Jan–Mar 202689 flights84.3%
Apr–Jun 202685 flights49.4%

Scale runs 40% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, UA 2047 did best on Tuesday at 82.7% on time and worst on Thursday at 62.0%. Each day rests on about 51 flights, so a gap of 21 points is worth noticing but could still narrow in another year.

Delay causes

Why UA 2047 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 43% of the 6,959 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
43%
National Airspace System
42%
Carrier
12%
Extreme weather
3%

43% 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 6,959 reported delay minutes here, that single category outweighs weather by 13 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 6,959 delay minutes reported on UA 2047.

Cancellations are rare at 0.00%, below the national 1.81% and low enough to earn the plus on the grade. Almost no flights are called off; the risk here is arriving late, not not arriving.

Connections and routes

What a delay on this flight costs

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 10.9% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.

The same number turns up on four other city pairs in the data, including SFO to IAH (95), SFO to PIT (30) and LAX to LAS (21), but none flew often enough under UA 2047 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to LAS to SFO only.

One caution: this is a thin sample. 357 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 2047

For a booking, read UA 2047 as 70.9% on time with 0.00% cancelled over 357 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