OnTimeStats

Historical on-time performance

Houston to Jacksonville

817 miData through Dec 2025Source: US DOT · BTS

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

On-time rate74%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled0.9%of scheduled flights

based on 634 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
    p9050 min
    Cancel0.9%
    Flights634

Why flights run late

Delay causes

  • Airline29%
  • Weather15%
  • Air traffic (NAS)17%
  • Late aircraft39%
  • 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 IAH → JAX

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 — 83% on time.

  • Mornings83% on time · p90 25 min · 253 flights
  • Middays75% on time · p90 50 min · 685 flights
  • Evenings73% on time · p90 55 min · 746 flights
  • Overnights64% on time · p90 70 min · 341 flights
  • Afternoons58% on time · p90 135 min · 59 flights · limited

Best day of week

On-time rates are fairly even by day on this route — ranging from 72% to 79% on time.

  • Tuesdays79% on time · p90 40 min · 294 flights
  • Saturdays73% on time · p90 55 min · 287 flights
  • Fridays73% on time · p90 55 min · 301 flights
  • Sundays72% on time · p90 55 min · 298 flights
  • Thursdays72% on time · p90 65 min · 301 flights
  • Wednesdays72% on time · p90 50 min · 300 flights
  • Mondays72% on time · p90 65 min · 303 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.