Flight number record
UA 1415
United Airlines · Denver to Sacramento
- Route
- DEN → SMF
- Departs
- 11:45
- Flights
- 338
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 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 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by about 55 minutes on average. That rests on 338 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 77.3%. That gap is worth roughly 41 fewer late arrivals for every thousand flights.
Key figures
On time
81.4%
Arrivals under 15 minutes late, of 338 completed flights
Avg delay
55 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
5.6%
National rate is 8.3%
These figures cover 338 flights between September 2025 and August 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.
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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 338 flights, with 11:30 (77 flights) and 11:55 (47 flights) next.
- Departs 11:45108 flights32.0%
- Departs 11:3077 flights22.8%
- Departs 11:5547 flights13.9%
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 11:45 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and UA 1415 runs 3 points better at 81.4%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
UA 1415 next to DEN to SMF
Every carrier on DEN to SMF combined arrived on time 73.2% of the time across 3,853 flights, so UA 1415 is 8 points ahead of it. United flew 1,791 flights on the same city pair under all its flight numbers, including this one, and those ran 80.5% on time. Across its whole network United Airlines managed 78.8%, which this flight beats by 3 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 1415thin sample | 338 | 81.4% | 55 min | 0.00% | B+ |
| All United Airlines on DEN–SMF | 1,791 | 80.5% | 62 min | 0.11% | B+ |
| All carriers on DEN–SMF | 3,853 | 73.2% | 56 min | 0.29% | C+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 1415 quarter by quarter
Quarter by quarter UA 1415 held fairly steady: 86.7% in Jul–Sep 2025, 85.9% in Oct–Dec 2025, 79.5% in Jan–Mar 2026, 78.2% in Apr–Jun 2026 and 78.0% in Jul–Sep 2026. A spread of 9 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202530 flights86.7%
- Oct–Dec 202592 flights85.9%
- Jan–Mar 202688 flights79.5%
- Apr–Jun 202687 flights78.2%
- Jul–Sep 202641 flights78.0%
Scale runs 70% to 90%.
By weekday, UA 1415 did best on Sunday at 89.4% on time and worst on Friday at 68.8%. Each day rests on about 48 flights, so a gap of 21 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 1415 runs when it is late
The 63 late arrivals split 30 under half an hour, 14 between 30 and 60 minutes, and 19 an hour or more.
- 15+ min early71 flights21.0%
- Within 15 min204 flights60.4%
- 15–29 min late30 flights8.9%
- 30–59 min late14 flights4.1%
- 1–2 hours late14 flights4.1%
- 2+ hours late5 flights1.5%
Scale runs 0% to 100%.
Share of 338 completed flights by arrival against schedule.
8 of 51 late departures made up the time and arrived on time, 16% of them. In the other direction, 20 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at SMF.
The worst days
Worst days for UA 1415
The latest arrival of the period was on 19 December 2025, 5 hours 21 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on five of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 19 December 2025 | 5 hours 21 minutes | Late-arriving aircraft |
| 6 March 2026 | 4 hours 14 minutes | Late-arriving aircraft |
| 27 January 2026 | 3 hours 19 minutes | Late-arriving aircraft |
| 4 October 2025 | 3 hours 14 minutes | Late-arriving aircraft |
| 16 March 2026 | 2 hours 56 minutes | Late-arriving aircraft |
Delay causes
Why UA 1415 runs late
Late-arriving aircraft accounts for 57% of the 3,450 delay minutes carriers reported here, and the remaining four split what is left.
- 57%Late-arriving aircraft
- 25%Carrier
- 18%National Airspace System
57% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 3,450 reported delay minutes here, that single category outweighs weather by 57 to one. The split is drawn from 3,450 delay minutes reported on UA 1415.
Cancellations are rare at 0.00%, below the national 1.89% 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
5.6% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about 55 minutes, 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.
The same number turns up on three other city pairs in the data, including STL to DEN (32), TUL to DEN (23) and LAX to DEN (21), 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. 338 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 81.4% on time with 0.00% cancelled over 338 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- DEN to SMF, every carrier and departure
- SMF to DEN, the return direction
- United Airlines 1208 on the same route81.2%
- United Airlines 2132 on the same route70.6%
- United Airlines 2149 on the same route93.2%
- Denver International (DEN) delay statistics
- Sacramento International (SMF) 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
- Why the first flight of the morning is statistically safest
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.