Flight number record

UA 1963

United Airlines · Denver to Salt Lake City

Route: DEN → SLC
Departs: 11:45
Flights: 365
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s UA 1963, check with United Airlines.

UA 1963 lands a B+, level with the national rate of 77.6%. Roughly one flight in five arrives 15 minutes late or worse, and those flights are late by roughly 45 minutes on average. That is a workable record, not a spotless one. That rests on 365 flights, with a median arrival 1 minute early.

On time

78.0%

Arrivals under 15 minutes late, of 363 completed flights

Avg delay

47 min

Across delayed arrivals only, not all flights

Cancelled

0.27%

National rate is 1.81%

1 hour+ late

5.0%

National rate is 8.1%

These figures cover 365 flights between July 2025 and June 2026. On-time means an arrival less than 15 minutes after the scheduled gate time, the same threshold the Department of Transportation uses in its own reports. Cancelled and diverted flights are excluded from the on-time rate and counted separately, which is why the cancellation column matters on its own.

Schedule

When UA 1963 flies

UA 1963 flies DEN to SLC without a single fixed slot. Its most common scheduled departure was 11:45, used on 238 of 365 flights, with 11:50 (53 flights) and 11:55 (37 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 11:45238 flights65.2%
Departs 11:5053 flights14.5%
Departs 11:5537 flights10.1%

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 11:45 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and UA 1963 runs level with that at 78.0%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

UA 1963 next to DEN to SLC

Every carrier on DEN to SLC combined arrived on time 77.5% of the time across 7,758 flights, so UA 1963 is about level with it. United flew 1,331 flights on the same city pair under all its flight numbers, including this one, and those ran 77.5% on time. Across its whole network United Airlines managed 79.0%, close to this flight's figure.

UA 1963 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 1963	365	78.0%	47 min	0.27%	B+
All United Airlines on DEN–SLC	1,331	77.5%	58 min	0.15%	B+
All carriers on DEN–SLC	7,758	77.5%	61 min	0.48%	B+
United Airlines, whole network	821,041	79.0%	72 min	1.01%	B

Across the year

UA 1963 quarter by quarter

UA 1963 did not run the same all year. Its best quarter was Jan–Mar 2026 at 86.5% on time and its weakest Oct–Dec 2025 at 73.9%, a swing of 13 points on roughly 91 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 flights75.8%
Oct–Dec 202592 flights73.9%
Jan–Mar 202690 flights86.5%
Apr–Jun 202691 flights75.8%

Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, UA 1963 did best on Tuesday at 94.3% on time and worst on Friday at 65.4%. Each day rests on about 52 flights, so a gap of 29 points is worth noticing but could still narrow in another year.

Delay causes

Why UA 1963 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 50% of the 3,763 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
50%
National Airspace System
26%
Carrier
23%

50% 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 3,763 reported delay minutes here, that single category outweighs weather by 50 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 3,763 delay minutes reported on UA 1963.

Cancellations are rare at 0.27%, 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

5.0% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last roughly 45 minutes, which a normal layover absorbs.

The same number turns up on five other city pairs in the data, including CLT to DEN (94), IAH to DEN (31) and SYR to DEN (24), but none flew often enough under UA 1963 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to SLC only.

One caution: this is a thin sample. 365 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 1963

For a booking, read UA 1963 as 78.0% on time with 0.27% cancelled over 365 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