According to PlainFlights' airport traffic ranking (BTS On-Time Performance total flights), Butte, MT (BTM) ranks #287 of 382 tracked US airports by total flights (most flights = #1). Butte, MT posts top-5% on-time performance among the 382 tracked U.S. airports, as a smaller regional airport.
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BTM on-time rate vs. the national average
Ahead of the U.S. average across all 382 tracked airports.
Delay Cause Breakdown
Top delay cause: Carrier.
Total delay minutes: 35,622.
Late Aircraft4.4% (1,552 min)
Carrier65.1% (23,200 min)
NAS (National Aviation System)5.0% (1,783 min)
Weather25.2% (8,993 min)
Security0.3% (94 min)
BTM - seasonal on-time pattern
Best: November (98.2%) · worst: January (94.8%)
BTM - on-time rate by year
2020–2025, year-over-year trend.
BTM - taxi-out and taxi-in (monthly)
Average taxi-out 15.1 min · taxi-in 4.1 min over the last 24 reported months (U.S. airport mean taxi-out ≈ 16.4 min).
BTM's average taxi-out (15.1 min) sits near the recent U.S. airport mean (~16.4 min). Month-to-month, it swings from 9.0 min (August 2024) to 24.0 min (December 2025).
Two PlainFlights-derived comparison paths for Butte, MT, both outside Montana so the neighborhoods are not same-state geography. Axes stay disjoint: volume peers exclude the on-time peer set. Same-state compare stays below.
The standout signal at Butte, MT is the delay mix: Carrier owns 65.1% of 35,622 delay minutes across 8,024 BTS flights. The on-time headline is 91% (12 pts above the 79% national average), with 719 delayed and 42 cancelled (0.52%).
Delay minutes concentrate in Carrier (4.4% late-aircraft, 65.1% carrier, 5.0% NAS, 25.2% weather, 0.3% security). As a quieter airport, a single late inbound can swing the month more than at a mega-hub.
On the multi-year calendar, BTM is strongest in November (98.2% on-time) and weakest in January (94.8%), a 3.4-point swing. Volume peaks in October (~116 flights/month). The busiest connecting route is to SLC (Salt Lake City) at 91.9% on-time. Field definitions: on-time performance explained.
Butte, MT vs. the national on-time distribution
On-time rate among all 382 tracked U.S. airports
91%Top 2%higher than 98% of 382 airports
Butte, MT
60%95%
U.S. airports by on-time rate, bucketed by value
Each bar is a band; taller bars hold more airports. 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.
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data (2020–2025).
Statistics reflect cumulative performance across all available reporting periods. On-time rates exclude cancelled and diverted flights.
BTM's on-time book is stronger than most peers; the remaining risk sits in the delay mix, not a weak headline rate.
Check the busiest route from BTM before you book a connection. See top routes →
Travel in November rather than January if your dates are flexible. Seasonal patterns →
Gate-to-wheels taxi-out averages 15.1 min here; check the monthly series before a tight connection. Taxi times →
On-time rate reflects the BTS historical average across all reporting carriers at this airport, not any single flight or airline.
Frequently Asked Questions
What is Butte, MT's on-time rate?
Butte, MT (BTM) has a 91% on-time rate across 8,024 BTS-tracked flights (2020-2025), 12 pts above the 79% national flight-weighted average; that places it in roughly the top-5% on-time performance.
How does BTM rank among U.S. airports by traffic volume?
Butte, MT ranks #287 of 382 tracked US airports by total BTS flights (most flights = #1), making it a smaller regional airport.
What's the most common cause of delays at Butte, MT?
Carrier is the leading delay cause at BTM, accounting for 65.1% of delay minutes. The full breakdown: 4.4% late-aircraft, 65.1% carrier, 5.0% NAS/air-traffic-control, 25.2% weather, and 0.3% security.
When is the best time to fly through Butte, MT?
November is historically BTM's strongest month at 98.2% on-time, while January is the weakest at 94.8%, a 3.4-point swing across the BTS historical record.
Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights