Flight number record
UA 526
United Airlines · Denver to Las Vegas
- Route
- DEN → LAS
- Departs
- 11:22
- Flights
- 334
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 526, check with United Airlines.
UA 526 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 roughly 50 minutes on average. That rests on 334 flights, with a median arrival 4 minutes early.
Key figures
On time
81.1%
Arrivals under 15 minutes late, of 334 completed flights
Avg delay
48 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
4.8%
National rate is 8.3%
These figures cover 334 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 526 flies
UA 526 flies DEN to LAS without a single fixed slot. Its most common scheduled departure was 11:22, used on 103 of 334 flights, with 11:45 (61 flights) and 11:50 (53 flights) next.
- Departs 11:22103 flights30.8%
- Departs 11:4561 flights18.3%
- Departs 11:5053 flights15.9%
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 11:22 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and UA 526 runs 3 points better at 81.1%. 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 526 next to DEN to LAS
Every carrier on DEN to LAS combined arrived on time 75.5% of the time across 7,168 flights, so UA 526 is 6 points ahead of it. United flew 2,401 flights on the same city pair under all its flight numbers, including this one, and those ran 79.4% on time. Across its whole network United Airlines managed 78.8%, which this flight beats by 2 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 526thin sample | 334 | 81.1% | 48 min | 0.00% | B+ |
| All United Airlines on DEN–LAS | 2,401 | 79.4% | 65 min | 0.33% | B+ |
| All carriers on DEN–LAS | 7,168 | 75.5% | 64 min | 0.64% | B+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 526 quarter by quarter
UA 526 did not run the same all year. Its best quarter was Jul–Sep 2025 at 96.7% on time and its weakest Jul–Sep 2026 at 77.4%, a swing of 19 points on roughly 67 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 202530 flights96.7%
- Oct–Dec 202561 flights78.7%
- Jan–Mar 202690 flights82.2%
- Apr–Jun 202691 flights79.1%
- Jul–Sep 202662 flights77.4%
Scale runs 70% to 100%.
By weekday, UA 526 did best on Monday at 89.6% on time and worst on Friday at 75.0%. Each day rests on about 48 flights, so a gap of 15 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 526 runs when it is late
The 63 late arrivals split 31 under half an hour, 16 between 30 and 60 minutes, and 16 an hour or more.
- 15+ min early60 flights18.0%
- Within 15 min211 flights63.2%
- 15–29 min late31 flights9.3%
- 30–59 min late16 flights4.8%
- 1–2 hours late13 flights3.9%
- 2+ hours late3 flights0.9%
Scale runs 0% to 100%.
Share of 334 completed flights by arrival against schedule.
6 of 41 late departures made up the time and arrived on time, 15% of them. In the other direction, 28 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 LAS.
The worst days
Worst days for UA 526
The latest arrival of the period was on 6 March 2026, 5 hours 49 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). On three of the five worst days the largest share was filed as a late-arriving aircraft.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 6 March 2026 | 5 hours 49 minutes | Carrier |
| 19 December 2025 | 3 hours 15 minutes | Late-arriving aircraft |
| 21 August 2026 | 2 hours 22 minutes | Late-arriving aircraft |
| 10 May 2026 | 1 hour 49 minutes | Late-arriving aircraft |
| 3 March 2026 | 1 hour 48 minutes | National Airspace System |
Delay causes
Why UA 526 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 3,033 reported delay minutes.
- 39%National Airspace System
- 31%Late-arriving aircraft
- 30%Carrier
39% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 1,168 minutes out of 3,033, against a national NAS share of 21%. The split is drawn from 3,033 delay minutes reported on UA 526.
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
Badly late arrivals are rare here: only 4.8% 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 628 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 six other city pairs in the data, including LAS to EWR (100), ORD to DEN (41) and ORF to DEN (16), but none flew often enough under UA 526 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to LAS only.
One caution: this is a thin sample. 334 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 526
For a booking, read UA 526 as 81.1% on time with 0.00% cancelled over 334 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- DEN to LAS, every carrier and departure
- LAS to DEN, the return direction
- United Airlines 2316 on the same route94.2%
- United Airlines 655 on the same route66.8%
- Frontier Airlines 777 on the same route72.1%
- Frontier Airlines 1993 on the same route80.3%
- Frontier Airlines 2349 on the same route69.9%
- Frontier Airlines 2015 on the same route88.4%
- Denver International (DEN) 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.