Flight number record

UA 746

United Airlines · Washington to Denver

Route: DCA → DEN
Departs: 16:11
Flights: 364
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s UA 746, check with United Airlines.

UA 746 lands a B+, about a point better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by close to two hours on average. That is a workable record, not a spotless one. That rests on 364 flights, with a median arrival 6 minutes early.

On time

78.8%

Arrivals under 15 minutes late, of 358 completed flights

Avg delay

104 min

Across delayed arrivals only, not all flights

Cancelled

0.27%

National rate is 1.81%

1 hour+ late

8.9%

National rate is 8.1%

These figures cover 364 flights between July 2025 and June 2026. Beyond the headline rate, 8.9% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

Schedule

When UA 746 flies

UA 746 flies DCA to DEN without a single fixed slot. Its most common scheduled departure was 16:11, used on 135 of 364 flights, with 16:17 (104 flights) and 16:13 (41 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 16:11135 flights37.1%
Departs 16:17104 flights28.6%
Departs 16:1341 flights11.3%

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 16:11 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and UA 746 runs 6 points better at 78.8%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

UA 746 next to DCA to DEN

Every carrier on DCA to DEN combined arrived on time 78.5% of the time across 1,349 flights, so UA 746 is about level with it. Across its whole network United Airlines managed 79.0%, close to this flight's figure.

UA 746 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 746thin sample	364	78.8%	104 min	0.27%	B+
All United Airlines on DCA–DEN	365	78.8%	104 min	0.27%	B+
All carriers on DCA–DEN	1,349	78.5%	86 min	0.74%	B+
United Airlines, whole network	821,041	79.0%	72 min	1.01%	B

Across the year

UA 746 quarter by quarter

Quarter by quarter UA 746 held fairly steady: 73.9% in Jul–Sep 2025, 78.0% in Oct–Dec 2025, 79.8% in Jan–Mar 2026 and 83.3% in Apr–Jun 2026. A spread of 9 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights73.9%
Oct–Dec 202591 flights78.0%
Jan–Mar 202690 flights79.8%
Apr–Jun 202691 flights83.3%

Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, UA 746 did best on Saturday at 90.4% on time and worst on Friday at 70.0%. Each day rests on about 52 flights, so a gap of 20 points is worth noticing but could still narrow in another year.

Delay causes

Why UA 746 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 7,899 reported delay minutes.

Carrier
35%
Late-arriving aircraft
32%
National Airspace System
27%
Extreme weather
6%

The largest share of delay minutes, 35%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 2,734 of the 7,899 delay minutes reported here. The split is drawn from 7,899 delay minutes reported on UA 746.

Cancellations are rare at 0.27%, below the national 1.81% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.

Connections and routes

What a delay on this flight costs

8.9% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last close to two hours, which a normal layover absorbs.

The 1,476 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 DEN to SFO (30), but none flew often enough under UA 746 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DCA to DEN 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 746

For a booking, read UA 746 as 78.8% on time with 0.27% cancelled over 364 flights. Those are rates from the past twelve months, not a forecast for any particular 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