OnTimeStats

Historical on-time performance

Houston to West Palm Beach

956 miData through Dec 2025Source: US DOT · BTS

Flights on IAH–PBI arrive on time 74% of the time over the last 12 months.

On-time rate74%arrived within 15 min
p90 delay55 min1 in 10 flights is worse (tail risk)
Cancelled0.6%of scheduled flights

based on 329 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • United Airlines
    On-time74%
    Medianon time
    p9055 min
    Cancel0.6%
    Flights329

Why flights run late

Delay causes

  • Airline26%
  • Weather6%
  • Air traffic (NAS)50%
  • Late aircraft17%
  • Security0%

Most delay minutes here are attributed to Air traffic (NAS).

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly IAH → PBI

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 72% to 74% on time.

  • Middays74% on time · p90 65 min · 673 flights
  • Evenings72% on time · p90 60 min · 220 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 63% to 80% on time.

  • Wednesdays80% on time · p90 55 min · 128 flights · limited
  • Tuesdays80% on time · p90 45 min · 127 flights · limited
  • Thursdays74% on time · p90 70 min · 129 flights · limited
  • Saturdays74% on time · p90 55 min · 127 flights · limited
  • Mondays72% on time · p90 65 min · 130 flights · limited
  • Fridays71% on time · p90 45 min · 131 flights · limited
  • Sundays63% on time · p90 75 min · 131 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.