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Route Reliability

Denver → Missoula

DEN–MSO · 679 miles · Denver International Airport to Missoula Montana Airport

86
Pretty Reliable
WanderNerd Reliability Score
81%
Arrive within 15 minutes
6 min
Average arrival delay
0.3%
Cancelled
1,222
Flights in the data

Data through May 2026.

Airlines on this route

  • United Airlines81% on time · 1,191 flights
  • Frontier Airlines90% on time · 31 flights

Too little history on this route to call a winner. We rank airlines only after 100 flights each.

What the data says

Morning-you made the right choice.

DEN–MSO flights departing between 6–9 AM arrived on time 89% of the time, versus 76% between 6–9 PM.

Friday is doing you no favors.

DEN–MSO flights arrived on time 87% of the time on Saturdays. On Fridays: 78%.

It basically never cancels.

Out of 1,222 scheduled flights, only 0.3% were cancelled.

Trending in the right direction.

DEN–MSO flights arrived on time 84% of the time over the last three months in the data, compared with 76% 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
  • Mon80%(189 flights)
  • Tue84%(167 flights)
  • Wed79%(164 flights)
  • Thu82%(168 flights)
  • Fri78%(183 flights)
  • Sat87%(167 flights)
  • Sun82%(173 flights)
On-time by departure window
  • 6–9 AM89%(115 flights)
  • 9 AM–12 PM86%(384 flights)
  • 12–3 PM79%(353 flights)
  • 3–6 PM—(3 flights)
  • 6–9 PM76%(356 flights)
On-time trend by month
88%
May

Jun 77% → May 88% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202577%103
July 202573%131
August 202578%129
September 202590%97
October 202591%121
November 202590%89
December 202566%92
January 202677%91
February 202686%83
March 202676%93
April 202689%90
May 202688%92

Keep nerding

Based on 1,222 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.