Flight number record

UA 1247

United Airlines · Denver to Portland

Route: DEN → PDX
Departs: 07:50
Flights: 363
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 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 77.6%. When something does go wrong the average delay runs about an hour. That rests on 363 flights, with a median arrival 11 minutes early.

Set against the rest of the country, UA 1247's record is 11 points better than the US average of 77.6%. That gap is worth roughly 105 fewer late arrivals for every thousand flights.

On time

88.1%

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 1.81%

1 hour+ late

4.1%

National rate is 8.1%

These figures cover 363 flights between July 2025 and June 2026. The median arrival is 11 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.

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 138 of 363 flights, with 08:00 (75 flights) and 07:46 (51 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 07:50138 flights38.0%
Departs 08:0075 flights20.7%
Departs 07:4651 flights14.0%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

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 88.1%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

UA 1247 next to DEN to PDX

Every carrier on DEN to PDX combined arrived on time 73.9% of the time across 4,289 flights, so UA 1247 is 14 points ahead of it. United flew 1,821 flights on the same city pair under all its flight numbers, including this one, and those ran 81.7% on time. Across its whole network United Airlines managed 79.0%, which this flight beats by 9 points.

UA 1247 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 1247thin sample	363	88.1%	64 min	0.00%	A+
All United Airlines on DEN–PDX	1,821	81.7%	60 min	0.44%	B+
All carriers on DEN–PDX	4,289	73.9%	53 min	0.44%	C+
United Airlines, whole network	821,041	79.0%	72 min	1.01%	B

Across the year

UA 1247 quarter by quarter

UA 1247 did not run the same all year. Its best quarter was Jul–Sep 2025 at 94.6% on time and its weakest Oct–Dec 2025 at 83.3%, a swing of 11 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 202592 flights94.6%
Oct–Dec 202591 flights83.3%
Jan–Mar 202689 flights84.3%
Apr–Jun 202691 flights90.1%

Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, UA 1247 ranged from 84.9% on Tuesday to 92.3% on Saturday. With about 52 flights behind each day, a spread of 7 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why UA 1247 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 61% of the 2,765 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Late-arriving aircraft
61%
Carrier
23%
National Airspace System
17%

61% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 2,765 reported delay minutes here, that single category outweighs weather by 61 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 2,765 delay minutes reported on UA 1247.

Cancellations are rare at 0.00%, below the national 1.81% 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 8.1% 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.

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: 88.1% on time and 0.00% cancelled. That is a base rate, not a promise about any single day.

Where to go next

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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures