Bert Mooney Airport (BTM): Delays & On-Time Performance
Data through July 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 11 minutes. 1 airlines fly from Butte, MT to 2 destinations.
- Departures on-time
- 91%
- left <15 min late
- Avg dep delay
- 11 min
- Arrivals on-time
- 84%
- 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
- 92% 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 | 87% | 9 min |
| Tuesday | 86% | 26 min |
| Wednesday | 90% | 5 min |
| Thursday | 86% | 15 min |
| Friday | 89% | 10 min |
| Saturday | 88% | 14 min |
| Sundaybest | 92% | 7 min |
Busiest routes from BTM
| Route | Flights/12mo | On-time | Avg delay |
|---|---|---|---|
| BTM → DEN (Denver) | 365 | 78% | 18 min |
| BTM → SLC (Salt Lake City) | 361 | 95% | 8 min |
Where flights into BTM come from
| Route | Flights/12mo | On-time | Avg delay |
|---|---|---|---|
| DEN (Denver) → BTM | 365 | 70% | 37 min |
| SLC (Salt Lake City) → BTM | 361 | 93% | 5 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 aircraft2%
- Airline operations78%
- National airspace system12%
- Weather8%
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 | 80% | 17 min |
| MSO — Missoula Montana Airport | 101 mi | 83% | 16 min |
| GTF — Great Falls International Airport | 118 mi | 90% | 10 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 2024-07 and 2026-07, with an average departure delay of 11 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 81% 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 1,484 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.