Flight number record
UA 1715
United Airlines · Denver to Newark
- Route
- DEN → EWR
- Departs
- 15:35
- Flights
- 364
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 1715, check with United Airlines.
UA 1715 draws a C. About one flight in three arrives at least 15 minutes late, and the typical late arrival is a little over an hour behind schedule. Build slack into anything you connect to. That rests on 364 flights, with a median arrival 5 minutes early.
The national on-time rate over the same period is 77.3%, so UA 1715 runs 11 points behind the country as a whole. Across a thousand flights that is about 111 extra late arrivals.
Key figures
On time
66.2%
Arrivals under 15 minutes late, of 352 completed flights
Avg delay
75 min
Across delayed arrivals only, not all flights
Cancelled
1.37%
National rate is 1.89%
1 hour+ late
16.2%
National rate is 8.3%
These figures cover 364 flights between September 2025 and August 2026. Beyond the headline rate, 16.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When UA 1715 flies
UA 1715 flies DEN to EWR without a single fixed slot. Its most common scheduled departure was 15:35, used on 122 of 364 flights, with 15:59 (37 flights) next.
- Departs 15:35122 flights33.5%
- Departs 15:5937 flights10.2%
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 15:35 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and UA 1715 runs 6 points worse at 66.2%. 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 1715 next to DEN to EWR
Every carrier on DEN to EWR combined arrived on time 78.8% of the time across 3,344 flights, so UA 1715 is 13 points behind it. Across its whole network United Airlines managed 78.8%, which this flight trails by 13 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 1715thin sample | 364 | 66.2% | 75 min | 1.37% | C |
| All United Airlines on DEN–EWR | 3,344 | 78.8% | 83 min | 1.53% | B |
| All carriers on DEN–EWR | 3,344 | 78.8% | 83 min | 1.53% | B |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 1715 quarter by quarter
UA 1715 did not run the same all year. Its best quarter was Jan–Mar 2026 at 82.8% on time and its weakest Jul–Sep 2026 at 39.7%, a swing of 43 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 202530 flights—
- Oct–Dec 202591 flights59.3%
- Jan–Mar 202690 flights82.8%
- Apr–Jun 202691 flights74.7%
- Jul–Sep 202662 flights39.7%
Scale runs 30% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, UA 1715 did best on Wednesday at 78.4% on time and worst on Sunday at 52.2%. Each day rests on about 52 flights, so a gap of 26 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 1715 runs when it is late
UA 1715 often beats the schedule: 113 of 352 completed flights, 32%, arrived 15 minutes or more early. The 119 late arrivals split 34 under half an hour, 28 between 30 and 60 minutes, and 57 an hour or more.
- 15+ min early113 flights32.1%
- Within 15 min120 flights34.1%
- 15–29 min late34 flights9.7%
- 30–59 min late28 flights8.0%
- 1–2 hours late34 flights9.7%
- 2+ hours late23 flights6.5%
Scale runs 0% to 100%.
Share of 352 completed flights by arrival against schedule.
18 of 110 late departures made up the time and arrived on time, 16% of them. In the other direction, 27 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 EWR.
The worst days
Worst days for UA 1715
The latest arrival of the period was on 9 November 2025, 4 hours 27 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 9 November 2025 | 4 hours 27 minutes | Late-arriving aircraft |
| 27 July 2026 | 4 hours 25 minutes | Late-arriving aircraft |
| 8 November 2025 | 3 hours 59 minutes | Late-arriving aircraft |
| 28 July 2026 | 3 hours 42 minutes | Late-arriving aircraft |
| 17 February 2026 | 3 hours 34 minutes | Carrier |
Delay causes
Why UA 1715 runs late
National Airspace System accounts for 58% of the 8,866 delay minutes carriers reported here, and the remaining four split what is left.
- 58%National Airspace System
- 28%Late-arriving aircraft
- 13%Carrier
- 1%Extreme weather
- 0%Security
58% 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 5,123 minutes out of 8,866, against a national NAS share of 21%. The split is drawn from 8,866 delay minutes reported on UA 1715.
Cancellations sit at 1.37% against a national 1.89%, which is ordinary. Diversions add another 1.92%.
Connections and routes
What a delay on this flight costs
16.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
At 1,605 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.
The same number turns up on three other city pairs in the data, including SAN to DEN (47), SEA to DEN (35) and LAS to DEN (32), but none flew often enough under UA 1715 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to EWR only.
One caution: this is a thin sample. 364 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 1715
For a booking, UA 1715 is a flight to put a long connection behind. 16.2% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.
Related
Where to go next
- DEN to EWR, every carrier and departure
- EWR to DEN, the return direction
- United Airlines 1233 on the same route78.4%
- United Airlines 2613 on the same route70.1%
- United Airlines 1283 on the same route70.5%
- United Airlines 1505 on the same route69.0%
- United Airlines 2345 on the same route96.7%
- United Airlines 1745 on the same route91.6%
- Denver International (DEN) delay statistics
- Newark Liberty International (EWR) 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
- How often a connection fails at the major US hubs
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.