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Flight Reliability

UA 1891 · United Airlines

Minneapolis → Denver (MSP–DEN)

81
Pretty Reliable
WanderNerd Reliability Score
80%
Arrive within 15 minutes
5 min
Average arrival delay
1.9%
Cancelled
2 min early
Median arrival delay

Based on 365 historical flights. Data through May 2026.

What the data says

Mornings have a slight edge.

Departures between 6–9 AM arrived on time 82% of the time, against 78% between 9 AM–12 PM.

Wednesday is the weak spot.

UA 1891 arrived on time 86% of the time on Sundays. On Wednesdays: 73%.

Ticking up lately.

UA 1891 arrived on time 85% of the time over the last three months in the data, compared with 78% in the three months before that.

The breakdown

On-time by weekday
  • Mon82%(51 flights)
  • Tue81%(52 flights)
  • Wed73%(51 flights)
  • Thu77%(51 flights)
  • Fri80%(51 flights)
  • Sat82%(51 flights)
  • Sun86%(51 flights)
On-time by departure window
  • 6–9 AM82%(168 flights)
  • 9 AM–12 PM78%(190 flights)
On-time trend by month
94%
May

Jun 72% → May 94% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202572%29
July 202559%29
August 202581%31
September 2025100%29
October 202580%30
November 202583%30
December 202568%31
January 202683%30
February 202682%28
March 202667%30
April 202693%30
May 202694%31
Departures on time
86%
Diverted
0%
Flights flown
358
Months covered
12

Same route, other flights

Keep nerding

Based on 365 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.