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Flight Reliability

UA 1191 · United Airlines

Burbank → Denver (BUR–DEN)91% of its flights flew this route. The rest (DEN–BZN) are included in these numbers.

96
Nerd Approved
WanderNerd Reliability Score
90%
Arrive within 15 minutes
5 min early
Average arrival delay
0.3%
Cancelled
15 min early
Median arrival delay

Based on 400 historical flights. Data through May 2026.

What the data says

Mornings have a slight edge.

Departures between 6–9 AM arrived on time 93% of the time, against 89% between 9 AM–12 PM.

Friday is doing you no favors.

UA 1191 arrived on time 96% of the time on Saturdays. On Fridays: 84%.

A bit ahead of the BUR–DEN route.

UA 1191 arrived on time 90% of the time, versus 84% across the BUR–DEN route.

Better than the United Airlines network average.

UA 1191 arrived on time 90% of the time, versus 79% across the United Airlines network.

The breakdown

On-time by weekday
  • Mon88%(58 flights)
  • Tue90%(57 flights)
  • Wed90%(57 flights)
  • Thu89%(55 flights)
  • Fri84%(57 flights)
  • Sat96%(56 flights)
  • Sun90%(59 flights)
On-time by departure window
  • 6–9 AM93%(68 flights)
  • 9 AM–12 PM89%(295 flights)
  • 12–3 PM92%(36 flights)
On-time trend by month
94%
May

Jun 87% → May 94% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%30
July 202577%31
August 202587%31
September 202597%30
October 202595%37
November 202591%58
December 202584%32
January 202690%30
February 202693%28
March 202681%31
April 202697%30
May 202694%31
Departures on time
89%
Diverted
0%
Flights flown
399
Months covered
12

Same route, other flights

Keep nerding

Based on 400 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.