OnTimeStats

Historical on-time performance

San Jose to Houston

1,621 miData through Dec 2025Source: US DOT · BTS

Flights on SJC–HOU arrive on time 91% of the time over the last 12 months.

On-time rate91%arrived within 15 min
p90 delay10 min1 in 10 flights is worse (tail risk)
Cancelled0.9%of scheduled flights

based on 336 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlines
    On-time91%
    Medianon time
    p9010 min
    Cancel0.9%
    Flights336

Why flights run late

Delay causes

  • Airline49%
  • Weather0%
  • Air traffic (NAS)33%
  • Late aircraft18%
  • Security0%

Most delay minutes here are attributed to Airline.

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly SJC → 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 — 92% on time.

  • Mornings92% on time · p90 10 min · 708 flights
  • Middays81% on time · p90 20 min · 295 flights
  • Afternoons70% on time · p90 35 min · 82 flights · limited

Best day of week

Saturdays are the most reliable day to fly this route — 96% on time.

  • Saturdays96% on time · p90 5 min · 147 flights · limited
  • Tuesdays90% on time · p90 10 min · 157 flights · limited
  • Wednesdays87% on time · p90 15 min · 157 flights · limited
  • Sundays87% on time · p90 20 min · 156 flights · limited
  • Fridays87% on time · p90 15 min · 155 flights · limited
  • Thursdays81% on time · p90 25 min · 156 flights · limited
  • Mondays81% on time · p90 20 min · 157 flights · limited
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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.