Flight number record
UA 1891
United Airlines · Minneapolis to Denver
- Route
- MSP → DEN
- Departs
- 09:05
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 1891, check with United Airlines.
UA 1891 lands a B, 7 points better than the national rate of 77.3%. About one flight in six arrives 15 minutes late or worse, and those flights are late by about 50 minutes on average. That rests on 365 flights, with a median arrival 4 minutes early.
Set against the rest of the country, UA 1891's record is 7 points better than the US average of 77.3%. That gap is worth roughly 66 fewer late arrivals for every thousand flights.
Key figures
On time
83.9%
Arrivals under 15 minutes late, of 360 completed flights
Avg delay
49 min
Across delayed arrivals only, not all flights
Cancelled
1.37%
National rate is 1.89%
1 hour+ late
3.6%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 2026. The median arrival is 4 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 1891 flies
UA 1891 flies MSP to DEN without a single fixed slot. Its most common scheduled departure was 09:05, used on 77 of 365 flights, with 09:00 (73 flights) and 08:44 (51 flights) next.
- Departs 09:0577 flights21.1%
- Departs 09:0073 flights20.0%
- Departs 08:4451 flights14.0%
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 09:05 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and UA 1891 runs level with that at 83.9%. 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 1891 next to MSP to DEN
Every carrier on MSP to DEN combined arrived on time 77.8% of the time across 5,811 flights, so UA 1891 is 6 points ahead of it. United flew 1,483 flights on the same city pair under all its flight numbers, including this one, and those ran 78.9% on time. Across its whole network United Airlines managed 78.8%, which this flight beats by 5 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 1891 | 365 | 83.9% | 49 min | 1.37% | B |
| All United Airlines on MSP–DEN | 1,483 | 78.9% | 79 min | 0.54% | B+ |
| All carriers on MSP–DEN | 5,811 | 77.8% | 70 min | 0.77% | B+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 1891 quarter by quarter
UA 1891 did not run the same all year. Its best quarter was Jul–Sep 2026 at 90.2% on time and its weakest Oct–Dec 2025 at 76.9%, a swing of 13 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 202530 flights—
- Oct–Dec 202592 flights76.9%
- Jan–Mar 202690 flights77.3%
- Apr–Jun 202691 flights87.9%
- Jul–Sep 202662 flights90.2%
Scale runs 70% to 95%. Rows with fewer than 30 flights show a dash.
By weekday, UA 1891 did best on Monday at 90.6% on time and worst on Wednesday at 76.5%. Each day rests on about 52 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 1891 runs when it is late
UA 1891 often beats the schedule: 91 of 360 completed flights, 25%, arrived 15 minutes or more early. Most of the lateness is short. 33 of the 58 late arrivals were under half an hour behind, and 13 reached an hour or more.
- 15+ min early91 flights25.3%
- Within 15 min211 flights58.6%
- 15–29 min late33 flights9.2%
- 30–59 min late12 flights3.3%
- 1–2 hours late8 flights2.2%
- 2+ hours late5 flights1.4%
Scale runs 0% to 100%.
Share of 360 completed flights by arrival against schedule.
4 of 29 late departures made up the time and arrived on time, 14% of them. In the other direction, 33 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at DEN.
The worst days
Worst days for UA 1891
The latest arrival of the period was on 19 December 2025, 4 hours 33 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. On four of the five worst days the largest share was filed as carrier-caused (crew, maintenance, fuelling, baggage).
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 19 December 2025 | 4 hours 33 minutes | National Airspace System |
| 17 March 2026 | 2 hours 37 minutes | Carrier |
| 3 February 2026 | 2 hours 34 minutes | Carrier |
| 16 March 2026 | 2 hours 26 minutes | Carrier |
| 29 July 2026 | 2 hours 22 minutes | Carrier |
Delay causes
Why UA 1891 runs late
National Airspace System accounts for 52% of the 2,861 delay minutes carriers reported here, and the remaining four split what is left.
- 52%National Airspace System
- 48%Carrier
52% 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 1,486 minutes out of 2,861, against a national NAS share of 21%. The split is drawn from 2,861 delay minutes reported on UA 1891.
Cancellations sit at 1.37% against a national 1.89%, 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 3.6% 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 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.
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 83.9% on time with 1.37% cancelled over 365 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- MSP to DEN, every carrier and departure
- DEN to MSP, the return direction
- Delta Air Lines 1025 on the same route78.7%
- Delta Air Lines 2931 on the same route65.4%
- Frontier Airlines 1149 on the same route77.0%
- United Airlines 2272 on the same route65.7%
- Delta Air Lines 2849 on the same route80.2%
- Minneapolis-St Paul International (MSP) delay statistics
- Denver International (DEN) 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
- Worst months to fly in the US, ranked by the data
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.