Historical on-time performance
Boston to Bozeman
1,991 miData through May 2026Source: US DOT · BTS
Flights on BOS–BZN arrive on time 71% of the time over the last 12 months.
On-time rate71%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled1.1%of scheduled flights
based on 92 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- JetBlue AirwaysOn-time71%Medianon timep9025 minCancel1.1%Flights92
Why flights run late
Delay causes
- Airline14%
- Weather7%
- Air traffic (NAS)66%
- Late aircraft13%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
When flights don't go
Why flights were cancelled
- Airline0%
- Weather0%
- Air traffic (NAS)100%
- Security0%
Most cancellations here are attributed to Air traffic (NAS). Shares are among 1 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly BOS → BZN
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 72% to 73% on time.
- Middays73% on time · p90 55 min · 136 flights · limited
- Mornings72% on time · p90 40 min · 273 flights
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