Flight number record

UA 1891

United Airlines · Minneapolis to Denver

Route: MSP → DEN
Departs: 09:00
Flights: 365
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s UA 1891, check with United Airlines.

UA 1891 lands a B, 3 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 roughly 55 minutes on average. That is a workable record, not a spotless one. That rests on 365 flights, with a median arrival 2 minutes early.

On time

80.5%

Arrivals under 15 minutes late, of 359 completed flights

Avg delay

54 min

Across delayed arrivals only, not all flights

Cancelled

1.64%

National rate is 1.81%

1 hour+ late

4.5%

National rate is 8.1%

These figures cover 365 flights between July 2025 and June 2026. The median arrival is 2 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 1891 flies

UA 1891 flies MSP to DEN without a single fixed slot. Its most common scheduled departure was 09:00, used on 72 of 365 flights, with 08:44 (51 flights) and 09:06 (49 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 09:0072 flights19.7%
Departs 08:4451 flights14.0%
Departs 09:0649 flights13.4%

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 09:00 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and UA 1891 runs 4 points worse at 80.5%. 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 1891 next to MSP to DEN

Every carrier on MSP to DEN combined arrived on time 77.6% of the time across 5,838 flights, so UA 1891 is 3 points ahead of it. United flew 1,459 flights on the same city pair under all its flight numbers, including this one, and those ran 78.4% on time. Across its whole network United Airlines managed 79.0%, which this flight beats by 2 points.

UA 1891 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 1891	365	80.5%	54 min	1.64%	B
All United Airlines on MSP–DEN	1,459	78.4%	80 min	0.75%	B+
All carriers on MSP–DEN	5,838	77.6%	69 min	0.81%	B+
United Airlines, whole network	821,041	79.0%	72 min	1.01%	B

Across the year

UA 1891 quarter by quarter

UA 1891 did not run the same all year. Its best quarter was Apr–Jun 2026 at 87.9% on time and its weakest Oct–Dec 2025 at 76.9%, 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 flights79.8%
Oct–Dec 202592 flights76.9%
Jan–Mar 202690 flights77.3%
Apr–Jun 202691 flights87.9%

Scale runs 70% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, UA 1891 did best on Sunday at 88.0% on time and worst on Wednesday at 72.5%. Each day rests on about 52 flights, so a gap of 16 points is worth noticing but could still narrow in another year.

Delay causes

Why UA 1891 runs late

One category carries most of the weight here. National Airspace System accounts for 45% of the 3,746 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.

National Airspace System
45%
Carrier
43%
Late-arriving aircraft
10%
Extreme weather
1%

45% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 1,689 minutes out of 3,746, against a national NAS share of 21%. The split is drawn from 3,746 delay minutes reported on UA 1891.

Cancellations sit at 1.64% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 4.5% 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 680 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.

Every one of the 365 flights under UA 1891 in the data flew MSP to DEN. The number was not reused on any other city pair, which makes this a clean record of one route.

One caution: this is a thin sample. 365 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 1891

For a booking, read UA 1891 as 80.5% on time with 1.64% cancelled over 365 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