OnTimeStats

Historical on-time performance

DFWIAH

Dallas-Fort Worth to Houston

224 miData through Dec 2025Source: US DOT · BTS

Flights on DFW–IAH arrive on time 66% of the time over the last 12 months.

On-time rate66%arrived within 15 min
Median delayon timetypical arrival
p90 delay70 min1 in 10 flights is worsetail risk
Cancelled3.5%of scheduled flights

based on 5,776 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • United Airlines
    On-time73%
    Medianon time
    p9055 min
    Cancel2.3%
    Flights2,215
  • SkyWest Airlines
    On-time70%
    Medianon time
    p9090 min
    Cancel4.7%
    Flights64
  • Envoy Airbest
    On-time75%
    Medianon time
    p9030 min
    Cancel4.4%
    Flights835
  • American Airlines
    On-time58%
    Median5 min
    p9090 min
    Cancel4.0%
    Flights2,557
  • Frontier Airlines
    On-time67%
    Medianon time
    p9050 min
    Cancel5.7%
    Flights105

Why flights run late

Delay causes

  • Airline24%
  • Weather7%
  • Air traffic (NAS)23%
  • Late aircraft46%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

Over time

On-time trend

By season

On-time rate by month

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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.