OnTimeStats

Historical on-time performance

Washington to Austin

1,315 miData through Dec 2025Source: US DOT · BTS

Flights on DCA–AUS arrive on time 48% of the time over the last 12 months.

On-time rate48%arrived within 15 min
p90 delay95 min1 in 10 flights is worse (tail risk)
Cancelled0.9%of scheduled flights

based on 337 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlines
    On-time48%
    Median15 min
    p9095 min
    Cancel0.9%
    Flights337

Why flights run late

Delay causes

  • Airline28%
  • Weather2%
  • Air traffic (NAS)21%
  • Late aircraft50%
  • 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 DCA → AUS

All airlines · rolling 36 months (2023-01 .. 2025-12).

Best time of day

On-time rates are fairly even by time of day on this route — ranging from 58% to 66% on time.

  • Afternoons66% on time · p90 70 min · 127 flights · limited
  • Evenings58% on time · p90 70 min · 966 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 46% to 72% on time.

  • Saturdays72% on time · p90 45 min · 156 flights · limited
  • Mondays65% on time · p90 50 min · 157 flights · limited
  • Tuesdays59% on time · p90 65 min · 157 flights · limited
  • Fridays57% on time · p90 75 min · 156 flights · limited
  • Sundays57% on time · p90 70 min · 157 flights · limited
  • Wednesdays55% on time · p90 75 min · 157 flights · limited
  • Thursdays46% on time · p90 80 min · 156 flights · limited
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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.