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Route Reliability

Kalispell → Denver

FCA–DEN · 752 miles · Glacier Park International Airport to Denver International Airport

85
Pretty Reliable
WanderNerd Reliability Score
83%
Arrive within 15 minutes
5 min
Average arrival delay
1.0%
Cancelled
1,063
Flights in the data

Data through May 2026.

United Airlines is the only airline in this data on this route, arriving on time 83% of the time across 1,063 flights. No comparison to make.

What the data says

Morning flights do better here.

FCA–DEN flights departing between 6–9 AM arrived on time 94% of the time, versus 66% between 3–6 PM.

Sunday comes out ahead.

A small edge: 87% on time on Sundays against 81% on Tuesdays.

Trending in the right direction.

FCA–DEN flights arrived on time 91% of the time over the last three months in the data, compared with 82% 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
  • Mon82%(151 flights)
  • Tue81%(148 flights)
  • Wed84%(147 flights)
  • Thu85%(146 flights)
  • Fri82%(152 flights)
  • Sat83%(149 flights)
  • Sun87%(154 flights)
On-time by departure window
  • 6–9 AM94%(358 flights)
  • 9 AM–12 PM93%(158 flights)
  • 12–3 PM77%(357 flights)
  • 3–6 PM66%(174 flights)
On-time trend by month
91%
May

Jun 77% → May 91% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202577%117
July 202575%118
August 202574%123
September 202588%120
October 202588%112
November 202595%59
December 202576%76
January 202683%63
February 202687%55
March 202685%61
April 202697%59
May 202691%84

Keep nerding

Based on 1,063 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.