Flight number record

UA 1415

United Airlines · Denver to Sacramento

Route: DEN → SMF
Departs: 11:45
Flights: 359
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s UA 1415, check with United Airlines.

UA 1415 lands a B+, 4 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 about an hour on average. That is a workable record, not a spotless one. That rests on 359 flights, with a median arrival 5 minutes early.

Set against the rest of the country, UA 1415's record is 4 points better than the US average of 77.6%. That gap is worth roughly 43 fewer late arrivals for every thousand flights.

On time

81.9%

Arrivals under 15 minutes late, of 359 completed flights

Avg delay

56 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.81%

1 hour+ late

5.3%

National rate is 8.1%

These figures cover 359 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 1415 flies

UA 1415 flies DEN to SMF without a single fixed slot. Its most common scheduled departure was 11:45, used on 108 of 359 flights, with 11:26 (49 flights) and 11:55 (47 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 11:45108 flights30.1%
Departs 11:2649 flights13.6%
Departs 11:5547 flights13.1%

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 1415 runs 3 points better at 81.9%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

UA 1415 next to DEN to SMF

Every carrier on DEN to SMF combined arrived on time 73.5% of the time across 3,839 flights, so UA 1415 is 8 points ahead of it. United flew 1,797 flights on the same city pair under all its flight numbers, including this one, and those ran 80.6% on time. Across its whole network United Airlines managed 79.0%, which this flight beats by 3 points.

UA 1415 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 1415thin sample	359	81.9%	56 min	0.00%	B+
All United Airlines on DEN–SMF	1,797	80.6%	62 min	0.33%	B+
All carriers on DEN–SMF	3,839	73.5%	56 min	0.34%	C+
United Airlines, whole network	821,041	79.0%	72 min	1.01%	B

Across the year

UA 1415 quarter by quarter

Quarter by quarter UA 1415 held fairly steady: 83.7% in Jul–Sep 2025, 85.9% in Oct–Dec 2025, 79.5% in Jan–Mar 2026 and 78.2% in Apr–Jun 2026. A spread of 8 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights83.7%
Oct–Dec 202592 flights85.9%
Jan–Mar 202688 flights79.5%
Apr–Jun 202687 flights78.2%

Scale runs 70% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, UA 1415 did best on Monday at 88.2% on time and worst on Friday at 74.5%. Each day rests on about 51 flights, so a gap of 14 points is worth noticing but could still narrow in another year.

Delay causes

Why UA 1415 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 58% of the 3,636 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
58%
Carrier
26%
National Airspace System
16%

58% 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 3,636 reported delay minutes here, that single category outweighs weather by 58 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 3,636 delay minutes reported on UA 1415.

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

5.3% 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 about an hour, which a normal layover absorbs.

The 909 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.

The same number turns up on two other city pairs in the data, including STL to DEN (32) and TUL to DEN (23), but none flew often enough under UA 1415 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to SMF only.

One caution: this is a thin sample. 359 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 1415

For a booking, read UA 1415 as 81.9% on time with 0.00% cancelled over 359 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