OnTimeStats

Historical on-time performance

Baltimore to Houston

1,246 miData through Dec 2025Source: US DOT · BTS

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

On-time rate75%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled2.1%of scheduled flights

based on 1,461 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
    p9035 min
    Cancel2.1%
    Flights1,461

Why flights run late

Delay causes

  • Airline36%
  • Weather9%
  • Air traffic (NAS)15%
  • Late aircraft40%
  • 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 → HOU

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 — 89% on time.

  • Mornings89% on time · p90 15 min · 1,350 flights
  • Middays79% on time · p90 30 min · 729 flights
  • Afternoons69% on time · p90 45 min · 573 flights
  • Evenings60% on time · p90 65 min · 812 flights
  • Overnights54% on time · p90 70 min · 674 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 70% to 76% on time.

  • Tuesdays76% on time · p90 35 min · 568 flights
  • Wednesdays74% on time · p90 40 min · 569 flights
  • Mondays74% on time · p90 45 min · 593 flights
  • Saturdays73% on time · p90 45 min · 563 flights
  • Thursdays72% on time · p90 40 min · 581 flights
  • Fridays70% on time · p90 45 min · 586 flights
  • Sundays70% on time · p90 45 min · 678 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.