Flight number record

UA 1766

United Airlines · Nashville to Denver

Route: BNA → DEN
Departs: 14:38
Flights: 344
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s UA 1766, check with United Airlines.

UA 1766 lands a B, 2 points 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 an hour and a half on average. That is a workable record, not a spotless one. That rests on 344 flights, with a median arrival 5 minutes early.

On time

79.2%

Arrivals under 15 minutes late, of 336 completed flights

Avg delay

98 min

Across delayed arrivals only, not all flights

Cancelled

1.16%

National rate is 1.81%

1 hour+ late

8.0%

National rate is 8.1%

These figures cover 344 flights between July 2025 and June 2026. Beyond the headline rate, 8.0% 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 1766 flies

UA 1766 flies BNA to DEN without a single fixed slot. Its most common scheduled departure was 14:38, used on 64 of 344 flights, with 14:35 (51 flights) and 16:00 (39 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 14:3864 flights18.6%
Departs 14:3551 flights14.8%
Departs 16:0039 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 14:38 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and UA 1766 runs 7 points better at 79.2%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

UA 1766 next to BNA to DEN

Every carrier on BNA to DEN combined arrived on time 74.9% of the time across 3,665 flights, so UA 1766 is 4 points ahead of it. United flew 1,168 flights on the same city pair under all its flight numbers, including this one, and those ran 79.3% on time. Across its whole network United Airlines managed 79.0%, close to this flight's figure.

UA 1766 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 1766thin sample	344	79.2%	98 min	1.16%	B
All United Airlines on BNA–DEN	1,168	79.3%	77 min	0.77%	B+
All carriers on BNA–DEN	3,665	74.9%	61 min	0.63%	C+
United Airlines, whole network	821,041	79.0%	72 min	1.01%	B

Across the year

UA 1766 quarter by quarter

UA 1766 did not run the same all year. Its best quarter was Oct–Dec 2025 at 88.4% on time and its weakest Apr–Jun 2026 at 71.6%, a swing of 17 points on roughly 86 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 202580 flights73.1%
Oct–Dec 202586 flights88.4%
Jan–Mar 202687 flights83.3%
Apr–Jun 202691 flights71.6%

Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, UA 1766 did best on Monday at 90.2% on time and worst on Friday at 70.0%. Each day rests on about 49 flights, so a gap of 20 points is worth noticing but could still narrow in another year.

Delay causes

Why UA 1766 runs late

One category carries most of the weight here. Carrier accounts for 44% of the 6,855 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.

Carrier
44%
Late-arriving aircraft
31%
National Airspace System
24%
Extreme weather
1%

The largest share of delay minutes, 44%, 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 3,031 of the 6,855 delay minutes reported here. The split is drawn from 6,855 delay minutes reported on UA 1766.

Cancellations sit at 1.16% against a national 1.81%, which is ordinary. Diversions add another 1.16%.

Connections and routes

What a delay on this flight costs

8.0% 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 an hour and a half, which a normal layover absorbs.

The 1,013 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 two other city pairs in the data, including EWR to BNA (42) and DEN to PHX (14), but none flew often enough under UA 1766 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to BNA to DEN only.

One caution: this is a thin sample. 344 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 1766

For a booking, read UA 1766 as 79.2% on time with 1.16% cancelled over 344 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