Bert Mooney Airport (BTM): Delays & On-Time Performance
Data through May 2026
Bert Mooney Airport (BTM) runs noticeably smoother than most US airports: 91% of its ~2 daily departures leave on time, 13 points above the national average, with an average departure delay of just 12 minutes. 1 airlines fly from Butte, MT to 2 destinations.
- Departures on-time
- 91%
- left <15 min late
- Avg dep delay
- 12 min
- Arrivals on-time
- 85%
- Cancelled
- 0.5%
- Destinations
- 2
- nonstop
- Airlines
- 1
Plan your departure from BTM
The choices most likely to improve your odds, based on this airport’s historical record.
- Best departure time
- Around 6 p.m.
- 96% on-time
- Best day to fly
- Sunday
- 93% on-time
- Cancellation risk
- 0.5%
- below the US average
Monthly on-time trend
Best time of day to depart from BTM
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 88% | 9 min |
| Tuesday | 86% | 27 min |
| Wednesday | 90% | 5 min |
| Thursday | 88% | 14 min |
| Friday | 88% | 10 min |
| Saturday | 88% | 18 min |
| Sundaybest | 93% | 7 min |
Busiest routes from BTM
| Route | Flights/12mo | On-time | Avg delay |
|---|---|---|---|
| BTM → DEN (Denver) | 365 | 79% | 17 min |
| BTM → SLC (Salt Lake City) | 361 | 94% | 10 min |
Where flights into BTM come from
| Route | Flights/12mo | On-time | Avg delay |
|---|---|---|---|
| DEN (Denver) → BTM | 365 | 72% | 35 min |
| SLC (Salt Lake City) → BTM | 361 | 92% | 6 min |
What causes delays at BTM
Share of total delay minutes by cause, as reported by carriers to the US DOT, weighted across routes departing BTM.
- Late-arriving aircraft1%
- Airline operations79%
- National airspace system11%
- Weather9%
Alternative airports near Butte
Other airports within 120 miles, compared on departure reliability.
| Airport | Distance | On-time departures | Avg delay |
|---|---|---|---|
| HLN — Helena Regional Airport | 51 mi | 88% | 15 min |
| BZN — Bozeman Yellowstone International Airport | 66 mi | 81% | 17 min |
| MSO — Missoula Montana Airport | 101 mi | 83% | 16 min |
| GTF — Great Falls International Airport | 118 mi | 90% | 9 min |
Compare the airport-level record first, then check the exact route you plan to book.
Frequently asked questions
- How often are flights delayed at BTM?
- 9% of departures from Bert Mooney Airport left 15+ minutes late between 2024-06 and 2026-05, with an average departure delay of 12 minutes. The national on-time average over the same period was 78%.
- What is the best time of day to depart from BTM?
- Flights scheduled around 6 p.m. depart on time 96% of the time at BTM, versus 83% around 10 a.m.. Booking before noon is the usual rule of thumb here.
- How often are flights cancelled at BTM?
- 0.5% of scheduled departures from BTM were cancelled in this period, compared with a national rate of 1.6%.
Popular route pages from this airport
Related guides
Based on 1,418 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.