OnTimeStats

Historical on-time performance

Houston to Midland

429 miData through May 2026Source: US DOT · BTS

Flights on IAH–MAF arrive on time 77% of the time over the last 12 months.

On-time rate77%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled1.2%of scheduled flights

based on 805 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

Too close to call — no single carrier is clearly more on-time here.

  • United Airlines
    On-time78%
    Medianon time
    p9045 min
    Cancel1.0%
    Flights411
  • SkyWest Airlines
    On-time77%
    Medianon time
    p9055 min
    Cancel1.5%
    Flights394

Why flights run late

Delay causes

  • Airline33%
  • Weather13%
  • Air traffic (NAS)16%
  • Late aircraft37%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline10%
  • Weather90%
  • Air traffic (NAS)0%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 10 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 IAH → MAF

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 — 87% on time.

  • Mornings87% on time · p90 25 min · 520 flights
  • Afternoons80% on time · p90 45 min · 482 flights
  • Middays79% on time · p90 45 min · 373 flights
  • Evenings72% on time · p90 55 min · 316 flights
  • Overnights71% on time · p90 60 min · 691 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 73% to 81% on time.

  • Wednesdays81% on time · p90 35 min · 347 flights
  • Tuesdays79% on time · p90 35 min · 351 flights
  • Mondays78% on time · p90 45 min · 374 flights
  • Thursdays78% on time · p90 50 min · 367 flights
  • Fridays78% on time · p90 45 min · 357 flights
  • Saturdays77% on time · p90 45 min · 242 flights
  • Sundays73% on time · p90 65 min · 344 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.