OnTimeStats

Historical on-time performance

Cincinnati to Boston

752 miData through Dec 2025Source: US DOT · BTS

Flights on CVG–BOS arrive on time 77% of the time over the last 12 months.

On-time rate77%arrived within 15 min
p90 delay65 min1 in 10 flights is worse (tail risk)
Cancelled1.6%of scheduled flights

based on 1,607 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Envoy Airbest
    On-time92%
    Medianon time
    p9010 min
    Cancel0.0%
    Flights305
  • Republic Airways
    On-time73%
    Medianon time
    p9070 min
    Cancel1.9%
    Flights1,302

Why flights run late

Delay causes

  • Airline23%
  • Weather4%
  • Air traffic (NAS)57%
  • Late aircraft16%
  • Security0%

Most delay minutes here are attributed to Air traffic (NAS).

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly CVG → BOS

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

Best time of day

Mornings are the most reliable time of day to fly this route — 88% on time.

  • Mornings88% on time · p90 15 min · 2,228 flights
  • Middays82% on time · p90 30 min · 1,016 flights
  • Overnights72% on time · p90 75 min · 87 flights · limited
  • Evenings70% on time · p90 75 min · 1,298 flights
  • Afternoons68% on time · p90 70 min · 747 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 75% to 85% on time.

  • Saturdays85% on time · p90 20 min · 585 flights
  • Wednesdays83% on time · p90 30 min · 809 flights
  • Tuesdays81% on time · p90 35 min · 793 flights
  • Thursdays79% on time · p90 50 min · 797 flights
  • Sundays78% on time · p90 55 min · 757 flights
  • Mondays78% on time · p90 50 min · 824 flights
  • Fridays75% on time · p90 60 min · 811 flights
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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.