OnTimeStats

Historical on-time performance

Boston to Pittsburgh

496 miData through Dec 2025Source: US DOT · BTS

Flights on BOS–PIT arrive on time 78% of the time over the last 12 months.

On-time rate78%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled1.5%of scheduled flights

based on 2,214 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

Too close to call — no single carrier is clearly more on-time here.

  • Republic Airways
    On-time79%
    Medianon time
    p9050 min
    Cancel1.5%
    Flights1,086
  • JetBlue Airways
    On-time77%
    Medianon time
    p9050 min
    Cancel1.5%
    Flights1,128

Why flights run late

Delay causes

  • Airline34%
  • Weather1%
  • Air traffic (NAS)15%
  • Late aircraft50%
  • 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 BOS → PIT

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 · 1,896 flights
  • Middays85% on time · p90 25 min · 938 flights
  • Afternoons75% on time · p90 55 min · 1,423 flights
  • Overnights71% on time · p90 75 min · 1,266 flights
  • Evenings68% on time · p90 65 min · 961 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 75% to 86% on time.

  • Wednesdays86% on time · p90 25 min · 939 flights
  • Tuesdays83% on time · p90 35 min · 903 flights
  • Saturdays79% on time · p90 50 min · 705 flights
  • Thursdays77% on time · p90 50 min · 995 flights
  • Fridays76% on time · p90 55 min · 997 flights
  • Mondays76% on time · p90 55 min · 1,001 flights
  • Sundays75% on time · p90 60 min · 944 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.