OnTimeStats

Historical on-time performance

Baltimore to Austin

1,342 miData through Dec 2025Source: US DOT · BTS

Flights on BWI–AUS arrive on time 76% of the time over the last 12 months.

On-time rate76%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled1.3%of scheduled flights

based on 1,278 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlines
    On-time76%
    Medianon time
    p9040 min
    Cancel1.3%
    Flights1,278

Why flights run late

Delay causes

  • Airline36%
  • Weather7%
  • Air traffic (NAS)19%
  • Late aircraft38%
  • 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 BWI → AUS

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

Best time of day

Mornings are the most reliable time of day to fly this route — 87% on time.

  • Mornings87% on time · p90 15 min · 1,575 flights
  • Middays79% on time · p90 25 min · 723 flights
  • Afternoons66% on time · p90 45 min · 640 flights
  • Evenings65% on time · p90 60 min · 497 flights
  • Overnights57% on time · p90 75 min · 679 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 72% to 77% on time.

  • Wednesdays77% on time · p90 35 min · 583 flights
  • Tuesdays76% on time · p90 35 min · 587 flights
  • Mondays76% on time · p90 35 min · 618 flights
  • Thursdays75% on time · p90 30 min · 611 flights
  • Fridays73% on time · p90 40 min · 618 flights
  • Saturdays73% on time · p90 45 min · 461 flights
  • Sundays72% on time · p90 55 min · 636 flights
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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.