OnTimeStats

Historical on-time performance

Pittsburgh to Baltimore

210 miData through Dec 2025Source: US DOT · BTS

Flights on PIT–BWI arrive on time 84% of the time over the last 12 months.

On-time rate84%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled1.3%of scheduled flights

based on 1,074 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlines
    On-time84%
    Medianon time
    p9025 min
    Cancel1.3%
    Flights1,074

Why flights run late

Delay causes

  • Airline24%
  • Weather6%
  • Air traffic (NAS)26%
  • Late aircraft43%
  • Security1%

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 PIT → BWI

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 — 93% on time.

  • Mornings93% on time · p90 5 min · 1,167 flights
  • Middays91% on time · p90 10 min · 945 flights
  • Afternoons79% on time · p90 25 min · 331 flights
  • Evenings72% on time · p90 50 min · 767 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 84% to 89% on time.

  • Tuesdays89% on time · p90 15 min · 471 flights
  • Wednesdays88% on time · p90 20 min · 470 flights
  • Thursdays87% on time · p90 20 min · 464 flights
  • Mondays86% on time · p90 15 min · 471 flights
  • Fridays85% on time · p90 25 min · 467 flights
  • Sundays84% on time · p90 25 min · 457 flights
  • Saturdays84% on time · p90 25 min · 410 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.