OnTimeStats

Historical on-time performance

Birmingham to Houston

562 miData through May 2026Source: US DOT · BTS

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

On-time rate74%arrived within 15 min
p90 delay170 min1 in 10 flights is worse (tail risk)
Cancelled2.0%of scheduled flights

based on 50 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • SkyWest Airlines
    On-time74%
    Medianon time
    p90170 min
    Cancel2.0%
    Flights50

Why flights run late

Delay causes

  • Airline71%
  • Weather5%
  • Air traffic (NAS)22%
  • Late aircraft3%
  • Security0%

Most delay minutes here are attributed to Airline.

When flights don't go

Why flights were cancelled

  • Airline0%
  • Weather100%
  • Air traffic (NAS)0%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 1 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 BHM → IAH

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

Best time of day

On-time rates are fairly even by time of day on this route — ranging from 74% to 74% on time.

  • Mornings74% on time · p90 60 min · 395 flights
  • Afternoons74% on time · p90 50 min · 252 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 73% to 80% on time.

  • Sundays80% on time · p90 30 min · 119 flights · limited
  • Tuesdays79% on time · p90 30 min · 116 flights · limited
  • Mondays74% on time · p90 65 min · 110 flights · limited
  • Wednesdays73% on time · p90 45 min · 105 flights · limited
  • Fridays73% on time · p90 80 min · 115 flights · limited

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.