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Route Reliability

Denver → GUC

DEN–GUC · 152 miles · Denver International Airport to GUC Airport

85
Pretty Reliable
WanderNerd Reliability Score
82%
Arrive within 15 minutes
11 min
Average arrival delay
0.8%
Cancelled
994
Flights in the data

Data through May 2026.

United Airlines is the only airline in this data on this route, arriving on time 82% of the time across 994 flights. No comparison to make.

What the data says

Morning-you made the right choice.

DEN–GUC flights departing between 9 AM–12 PM arrived on time 87% of the time, versus 74% between 6–9 PM.

Tuesday has been the better bet.

A small edge: 84% on time on Tuesdays against 79% on Thursdays.

Trending in the right direction.

DEN–GUC flights arrived on time 87% of the time over the last three months in the data, compared with 79% in the three months before that.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon81%(140 flights)
  • Tue84%(140 flights)
  • Wed82%(141 flights)
  • Thu79%(140 flights)
  • Fri81%(140 flights)
  • Sat81%(139 flights)
  • Sun83%(142 flights)
On-time by departure window
  • 9 AM–12 PM87%(362 flights)
  • 12–3 PM85%(262 flights)
  • 6–9 PM74%(358 flights)
On-time trend by month
82%
May

Jun 73% → May 82% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202573%89
July 202576%92
August 202577%91
September 202584%90
October 202587%87
November 202588%57
December 202576%75
January 202679%91
February 202681%84
March 202690%88
April 202689%65
May 202682%73

Keep nerding

Based on 994 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.