Flight number record
UA 1787
United Airlines · Portland to Denver
- Route
- PDX → DEN
- Departs
- 16:15
- Flights
- 251
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 1787, check with United Airlines.
UA 1787 lands a B+, 4 points better than the national rate of 77.3%. Roughly one flight in five arrives 15 minutes late or worse, and those flights are late by about 55 minutes on average. That rests on 251 flights, with a median arrival 6 minutes early.
Set against the rest of the country, UA 1787's record is 4 points better than the US average of 77.3%. That gap is worth roughly 44 fewer late arrivals for every thousand flights.
Key figures
On time
81.7%
Arrivals under 15 minutes late, of 251 completed flights
Avg delay
55 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
6.4%
National rate is 8.3%
These figures cover 251 flights between September 2025 and August 2026. The median arrival is 6 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 1787 flies
UA 1787 flies PDX to DEN without a single fixed slot. Its most common scheduled departure was 16:15, used on 130 of 251 flights, with 15:45 (32 flights) next.
- Departs 16:15130 flights51.8%
- Departs 15:4532 flights12.7%
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 16:15 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and UA 1787 runs 10 points better at 81.7%. 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 1787 next to PDX to DEN
Every carrier on PDX to DEN combined arrived on time 82.3% of the time across 4,280 flights, so UA 1787 is about level with it. United flew 1,820 flights on the same city pair under all its flight numbers, including this one, and those ran 91.2% 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 1787thin sample | 251 | 81.7% | 55 min | 0.00% | B+ |
| All United Airlines on PDX–DEN | 1,820 | 91.2% | 74 min | 0.49% | A+ |
| All carriers on PDX–DEN | 4,280 | 82.3% | 55 min | 0.37% | B+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 1787 quarter by quarter
UA 1787 did not run the same all year. Its best quarter was Jan–Mar 2026 at 88.2% on time and its weakest Jul–Sep 2026 at 70.5%, a swing of 18 points on roughly 84 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.
- Oct–Dec 202514 flights—
- Jan–Mar 202685 flights88.2%
- Apr–Jun 202691 flights83.5%
- Jul–Sep 202661 flights70.5%
Scale runs 60% to 95%. Rows with fewer than 30 flights show a dash.
By weekday, UA 1787 did best on Saturday at 93.5% on time and worst on Monday at 70.3%. Each day rests on about 36 flights, so a gap of 23 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 1787 runs when it is late
UA 1787 often beats the schedule: 68 of 251 completed flights, 27%, arrived 15 minutes or more early. The 46 late arrivals split 20 under half an hour, 10 between 30 and 60 minutes, and 16 an hour or more.
- 15+ min early68 flights27.1%
- Within 15 min137 flights54.6%
- 15–29 min late20 flights8.0%
- 30–59 min late10 flights4.0%
- 1–2 hours late11 flights4.4%
- 2+ hours late5 flights2.0%
Scale runs 0% to 100%.
Share of 251 completed flights by arrival against schedule.
6 of 41 late departures made up the time and arrived on time, 15% of them. 11 flights left on time and still arrived late.
The worst days
Worst days for UA 1787
The latest arrival of the period was on 2 April 2026, 3 hours 8 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. Three of the five worst days fell in July 2026.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 2 April 2026 | 3 hours 8 minutes | Late-arriving aircraft |
| 23 July 2026 | 2 hours 35 minutes | Late-arriving aircraft |
| 25 January 2026 | 2 hours 21 minutes | Late-arriving aircraft |
| 9 July 2026 | 2 hours 18 minutes | Late-arriving aircraft |
| 28 July 2026 | 2 hours 2 minutes | National Airspace System |
Delay causes
Why UA 1787 runs late
Late-arriving aircraft accounts for 50% of the 2,511 delay minutes carriers reported here, and the remaining four split what is left.
- 50%Late-arriving aircraft
- 43%National Airspace System
- 7%Carrier
50% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 2,511 reported delay minutes here, that single category outweighs weather by 50 to one. The split is drawn from 2,511 delay minutes reported on UA 1787.
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
6.4% 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 991 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 DEN to OMA (202), ORD to DSM (20) and IAH to DEN (16), but none flew often enough under UA 1787 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to PDX to DEN only.
One caution: this is a thin sample. 251 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 1787
For a booking, read UA 1787 as 81.7% on time with 0.00% cancelled over 251 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- PDX to DEN, every carrier and departure
- DEN to PDX, the return direction
- United Airlines 2375 on the same route96.7%
- United Airlines 459 on the same route97.2%
- Portland International (PDX) delay statistics
- Denver International (DEN) 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.