OnTimeStats

Historical on-time performance

Tampa to Houston

787 miData through May 2026Source: US DOT · BTS

Flights on TPA–IAH arrive on time 86% of the time over the last 12 months.

On-time rate86%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled0.4%of scheduled flights

based on 1,438 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

Not enough comparable data to name a most-on-time carrier — low-data carriers aren't ranked.

  • United Airlines
    On-time86%
    Medianon time
    p9025 min
    Cancel0.4%
    Flights1,375
  • Spirit Airlines
    On-time78%
    Medianon time
    p9090 min
    Cancel1.6%
    Flights63

Why flights run late

Delay causes

  • Airline32%
  • Weather8%
  • Air traffic (NAS)40%
  • Late aircraft21%
  • Security0%

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

When flights don't go

Why flights were cancelled

  • Airline0%
  • Weather50%
  • Air traffic (NAS)50%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 6 cancellations with a reported cause (BTS reports causes from June 2003).

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly TPA → IAH

All airlines · rolling 36 months (2023-06 .. 2026-05).

Best time of day

Mornings are the most reliable time of day to fly this route — 88% on time.

  • Mornings88% on time · p90 10 min · 1,959 flights
  • Middays83% on time · p90 30 min · 1,221 flights
  • Afternoons74% on time · p90 70 min · 585 flights
  • Evenings69% on time · p90 90 min · 1,229 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 78% to 83% on time.

  • Wednesdays83% on time · p90 35 min · 677 flights
  • Saturdays83% on time · p90 30 min · 723 flights
  • Tuesdays82% on time · p90 30 min · 682 flights
  • Mondays80% on time · p90 45 min · 745 flights
  • Fridays79% on time · p90 45 min · 737 flights
  • Thursdays79% on time · p90 45 min · 753 flights
  • Sundays78% on time · p90 45 min · 759 flights

Keep exploring

Related pages

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.