Flight number record
UA 1247
United Airlines · Denver to Portland
- Route
- DEN → PDX
- Departs
- 07:50
- Flights
- 363
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 1247, check with United Airlines.
UA 1247 earns an A+. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 11 points better than the national rate of 77.3%. When something does go wrong the average delay runs about an hour. That rests on 363 flights, with a median arrival 9 minutes early.
Set against the rest of the country, UA 1247's record is 11 points better than the US average of 77.3%. That gap is worth roughly 105 fewer late arrivals for every thousand flights.
Key figures
On time
87.8%
Arrivals under 15 minutes late, of 362 completed flights
Avg delay
64 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
4.1%
National rate is 8.3%
These figures cover 363 flights between September 2025 and August 2026. The median arrival is 9 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 1247 flies
UA 1247 flies DEN to PDX without a single fixed slot. Its most common scheduled departure was 07:50, used on 97 of 363 flights, with 08:05 (82 flights) and 08:00 (75 flights) next.
- Departs 07:5097 flights26.7%
- Departs 08:0582 flights22.6%
- Departs 08:0075 flights20.7%
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 07:50 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and UA 1247 runs level with that at 87.8%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
UA 1247 next to DEN to PDX
Every carrier on DEN to PDX combined arrived on time 74.8% of the time across 4,280 flights, so UA 1247 is 13 points ahead of it. United flew 1,822 flights on the same city pair under all its flight numbers, including this one, and those ran 82.3% on time. Across its whole network United Airlines managed 78.8%, which this flight beats by 9 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 1247thin sample | 363 | 87.8% | 64 min | 0.00% | A+ |
| All United Airlines on DEN–PDX | 1,822 | 82.3% | 59 min | 0.38% | B+ |
| All carriers on DEN–PDX | 4,280 | 74.8% | 55 min | 0.33% | C+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 1247 quarter by quarter
UA 1247 did not run the same all year. Its best quarter was Jul–Sep 2026 at 95.2% on time and its weakest Oct–Dec 2025 at 83.3%, a swing of 12 points on roughly 73 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 flights90.0%
- Oct–Dec 202591 flights83.3%
- Jan–Mar 202689 flights84.3%
- Apr–Jun 202691 flights90.1%
- Jul–Sep 202662 flights95.2%
Scale runs 75% to 100%.
By weekday, UA 1247 ranged from 84.6% on Thursday to 94.2% on Saturday. With about 52 flights behind each day, a spread of 10 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late UA 1247 runs when it is late
UA 1247 often beats the schedule: 127 of 362 completed flights, 35%, arrived 15 minutes or more early. The 44 late arrivals split 13 under half an hour, 16 between 30 and 60 minutes, and 15 an hour or more.
- 15+ min early127 flights35.1%
- Within 15 min191 flights52.8%
- 15–29 min late13 flights3.6%
- 30–59 min late16 flights4.4%
- 1–2 hours late11 flights3.0%
- 2+ hours late4 flights1.1%
Scale runs 0% to 100%.
Share of 362 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 29 departures that left 15 minutes late or more, only 2 made it up before arrival. 17 flights left on time and still arrived late.
The worst days
Worst days for UA 1247
The latest arrival of the period was on 3 April 2026, 8 hours 5 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 |
|---|---|---|
| 3 April 2026 | 8 hours 5 minutes | Late-arriving aircraft |
| 28 January 2026 | 2 hours 34 minutes | Late-arriving aircraft |
| 15 July 2026 | 2 hours 27 minutes | Late-arriving aircraft |
| 7 December 2025 | 2 hours 12 minutes | Carrier |
| 3 November 2025 | 1 hour 52 minutes | Late-arriving aircraft |
Delay causes
Why UA 1247 runs late
Late-arriving aircraft accounts for 58% of the 2,805 delay minutes carriers reported here, and the remaining four split what is left.
- 58%Late-arriving aircraft
- 25%Carrier
- 16%National Airspace System
58% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 2,805 reported delay minutes here, that single category outweighs weather by 58 to one. The split is drawn from 2,805 delay minutes reported on UA 1247.
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 4.1% 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 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 one other city pair in the data, including HDN to DEN (1), but none flew often enough under UA 1247 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to PDX only.
One caution: this is a thin sample. 363 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 1247
For a booking, UA 1247 has one of the better records a US domestic flight can show: 87.8% on time and 0.00% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- DEN to PDX, every carrier and departure
- PDX to DEN, the return direction
- United Airlines 498 on the same route77.4%
- United Airlines 1337 on the same route83.4%
- United Airlines 644 on the same route84.3%
- Denver International (DEN) delay statistics
- Portland International (PDX) 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.