OnTimeStats

Historical on-time performance

Bozeman to Boston

1,991 miData through Dec 2025Source: US DOT · BTS

Flights on BZN–BOS arrive on time 65% of the time over the last 12 months.

On-time rate65%arrived within 15 min
p90 delay75 min1 in 10 flights is worse (tail risk)
Cancelled0.0%of scheduled flights

based on 62 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • JetBlue Airways
    On-time65%
    Medianon time
    p9075 min
    Cancel0.0%
    Flights62

Why flights run late

Delay causes

  • Airline9%
  • Weather0%
  • Air traffic (NAS)22%
  • Late aircraft69%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly BZN → BOS

All airlines · rolling 36 months (2023-01 .. 2025-12).

Best time of day

On-time rates are fairly even by time of day on this route — ranging from 55% to 58% on time.

  • Middays58% on time · p90 100 min · 237 flights
  • Afternoons55% on time · p90 105 min · 125 flights · limited

Best day of week

On-time rates are fairly even by day on this route — ranging from 50% to 60% on time.

  • Wednesdays60% on time · p90 80 min · 58 flights · limited
  • Saturdays58% on time · p90 150 min · 91 flights · limited
  • Sundays57% on time · p90 105 min · 54 flights · limited
  • Mondays52% on time · p90 80 min · 65 flights · limited
  • Fridays50% on time · p90 100 min · 58 flights · limited
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Methodology

A flight is on time when it arrives within 15 minutes of schedule — the US DOT / BTS standard. Median and p90(the “1-in-10 bad day”) are read from the full arrival-delay distribution, never averaged across periods.

Figures cover a carrier’s own BTS-coded flights. Cells below ~200 flights are flagged as limited data. All numbers are pre-computed from public BTS On-Time Performance data.