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Airport Reliability

BTM · Butte

Butte, MT (BTM)

90%
Departures within 15 minutes
4 min
Average departure delay
85%
Arrivals within 15 minutes
0.4%
Departures cancelled

Based on 726 departures and 726 arrivals. Data through May 2026.

What the data says

The late departure is the smart one here.

Departures from BTM departing between 6–9 PM arrived on time 96% of the time, versus 84% between 9 AM–12 PM.

Skip Thursday if you can.

Departures from BTM arrived on time 94% of the time on Sundays. On Thursdays: 87%.

Slipping a little lately.

Departures from BTM arrived on time 86% of the time over the last three months in the data, compared with 89% in the three months before that.

When BTM gets messy

On-time by departure window
  • 9 AM–12 PM84%(363 flights)
  • 3–6 PM88%(24 flights)
  • 6–9 PM96%(334 flights)
On-time by weekday
  • Mon87%(103 flights)
  • Tue88%(103 flights)
  • Wed91%(102 flights)
  • Thu87%(101 flights)
  • Fri87%(103 flights)
  • Sat89%(103 flights)
  • Sun94%(106 flights)
On-time trend by month
87%
May

Jun 88% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202588%59
July 202589%62
August 202586%62
September 202595%60
October 202592%62
November 202597%58
December 202583%60
January 202692%61
February 202693%56
March 202685%61
April 202686%59
May 202687%61

Airlines departing BTM

Busiest routes from BTM

Based on 726 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.