State · MT · 2020–2025 BTS data
Montana
According to PlainFlights' state traffic ranking (BTS On-Time Performance total flights), Montana ranks #35 of 53 US states by total flight operations (most flights = #1).
Data updated 2026-06-13
- 84.6%
- On-time
- +5.6 pts
- vs US avg
- 80 min
- Delay when late
- 0.70%
- Cancelled
- #35 of 53
- Corpus placement
State reliability verdict
According to U.S. DOT BTS data, Montana is a mid-book state: 330,137 operations at 8 airports run 84.6% on-time, 5.6 pts above the 79% U.S. average. Among tracked airports, BTM leads locally at 91% on-time.
- 84.6%
- statewide on-time
- +5.6 pts
- vs US average
- 8
- airports tracked
- 0.70%
- cancellation rate
On-time means arrived less than 15 minutes after schedule. Figures are historical BTS averages, not a guarantee for any single flight.
Montana vs all states by total flight operations
Where this state's BTS On-Time Performance flight count sits among every state with tracked operations (traffic density, not on-time quality)
330,137 Top 66% more flights than 34% of 53 states
States, banded by total BTS-tracked flights
Each bar is a band; taller bars hold more states. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source BTS On-Time Performance · 2026-06-13
Airports in Montana
Montana airports ranked by on-time rate
8 BTS-tracked airports, led by BTM at 91%
On-time rate by airport
- BTM
Butte, MT: 91% on-time, 8,024 flights
91 %
- HLN
Helena, MT: 89.2% on-time, 17,569 flights
89 %
- GTF
Great Falls, MT: 88.3% on-time, 29,395 flights
88 %
- WYS
West Yellowstone, MT: 87.9% on-time, 3,872 flights
88 %
- BIL
Billings, MT: 85.7% on-time, 51,010 flights
86 %
- FCA
Kalispell, MT: 84.4% on-time, 50,123 flights
84 %
- MSO
Missoula, MT: 83.9% on-time, 52,758 flights
84 %
- BZN
Bozeman, MT: 82.3% on-time, 117,386 flights
82 %
What this shows Airports here range from 82.3% to 91% on-time.
| Code | Airport | City | Flights | On-Time | Avg Delay (when late) |
|---|---|---|---|---|---|
| BZN | Bozeman, MT | Bozeman | 117,386 | 82.3% | 73.8 min |
| MSO | Missoula, MT | Missoula | 52,758 | 83.9% | 82.8 min |
| BIL | Billings, MT | Billings | 51,010 | 85.7% | 78.5 min |
| FCA | Kalispell, MT | Kalispell | 50,123 | 84.4% | 82.4 min |
| GTF | Great Falls, MT | Great Falls | 29,395 | 88.3% | 88.5 min |
| HLN | Helena, MT | Helena | 17,569 | 89.2% | 99.0 min |
| BTM | Butte, MT | Butte | 8,024 | 91% | 102.0 min |
| WYS | West Yellowstone, MT | West Yellowstone | 3,872 | 87.9% | 109.7 min |
Montana traffic-scale reading
The standout signal in Montana is traffic scale: 330,137 BTS flights place it #35 of 53 by book size. That mid-book footprint sits beside a 84.6% on-time rate (5.6 pts above the 79% U.S. average), 50,924 delayed departures, and a 0.70% cancellation rate.
Mid-volume books still show a clear airport fingerprint: Bozeman, MT (BZN) handles 117,386 flights at 82.3% on-time.
On the recent 24-month tape, delay pressure is lightest in Oct 2024 and heaviest in Jun 2025. On reliability, Butte, MT (BTM) posts the highest on-time rate at 91% across 8,024 flights. On-time performance explained.
States With a Similar On-Time Rate
Other U.S. states whose statewide on-time rate is closest to Montana's 84.6%.
Using Montana's data
Montana's statewide on-time book is stronger than most peers; remaining risk sits in the busiest airport and delay mix, not a weak headline rate.
- Butte, MT (BTM) is the most reliable airport in Montana among those with meaningful traffic. BTM profile
- Bozeman, MT handles the most traffic in the state; its performance weighs heavily on the state average. BZN profile
- See how Montana compares with every other state that has BTS-tracked airports. All states
State averages are flight-weighted across all reporting airports in the state; a single busy airport can dominate the figure.
Read our methodology - how this data is sourced, computed, and verified.
Source: U.S. Bureau of Transportation Statistics (BTS) Airline on-time performance and operational reliability · 2025