OnTimeStats

Historical on-time performance

Baltimore to Rochester

277 miData through Dec 2025Source: US DOT · BTS

Flights on BWI–ROC arrive on time 75% of the time over the last 12 months.

On-time rate75%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled1.3%of scheduled flights

based on 1,100 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlines
    On-time75%
    Medianon time
    p9040 min
    Cancel1.3%
    Flights1,100

Why flights run late

Delay causes

  • Airline35%
  • Weather9%
  • Air traffic (NAS)13%
  • Late aircraft43%
  • 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 BWI → ROC

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 58% to 87% on time.

  • Mornings87% on time · p90 15 min · 175 flights · limited
  • Middays84% on time · p90 20 min · 1,076 flights
  • Afternoons76% on time · p90 35 min · 781 flights
  • Evenings67% on time · p90 50 min · 258 flights
  • Overnights58% on time · p90 60 min · 1,085 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 68% to 76% on time.

  • Tuesdays76% on time · p90 35 min · 496 flights
  • Wednesdays74% on time · p90 35 min · 497 flights
  • Fridays74% on time · p90 45 min · 491 flights
  • Thursdays73% on time · p90 30 min · 485 flights
  • Mondays72% on time · p90 35 min · 491 flights
  • Sundays69% on time · p90 55 min · 477 flights
  • Saturdays68% on time · p90 45 min · 438 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.