OnTimeStats

Historical on-time performance

Baltimore to Windsor Locks

283 miData through Dec 2025Source: US DOT · BTS

Flights on BWI–BDL arrive on time 79% of the time over the last 12 months.

On-time rate79%arrived within 15 min
p90 delay30 min1 in 10 flights is worse (tail risk)
Cancelled1.5%of scheduled flights

based on 1,747 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlines
    On-time79%
    Medianon time
    p9030 min
    Cancel1.5%
    Flights1,747

Why flights run late

Delay causes

  • Airline31%
  • Weather6%
  • Air traffic (NAS)12%
  • Late aircraft51%
  • 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 BWI → BDL

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 — 90% on time.

  • Mornings90% on time · p90 10 min · 918 flights
  • Middays87% on time · p90 15 min · 1,311 flights
  • Afternoons72% on time · p90 40 min · 940 flights
  • Evenings66% on time · p90 55 min · 766 flights
  • Overnights55% on time · p90 65 min · 1,169 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 68% to 79% on time.

  • Tuesdays79% on time · p90 30 min · 766 flights
  • Wednesdays79% on time · p90 30 min · 764 flights
  • Fridays75% on time · p90 40 min · 774 flights
  • Mondays74% on time · p90 35 min · 780 flights
  • Thursdays74% on time · p90 40 min · 768 flights
  • Saturdays71% on time · p90 55 min · 572 flights
  • Sundays68% on time · p90 40 min · 680 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.