OnTimeStats

Historical on-time performance

Boston to Austin

1,698 miData through Dec 2025Source: US DOT · BTS

Flights on BOS–AUS arrive on time 69% of the time over the last 12 months.

On-time rate69%arrived within 15 min
p90 delay75 min1 in 10 flights is worse (tail risk)
Cancelled1.2%of scheduled flights

based on 1,298 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.

  • Southwest Airlines
    On-time55%
    Median5 min
    p9090 min
    Cancel0.0%
    Flights62
  • JetBlue Airways
    On-time70%
    Medianon time
    p9060 min
    Cancel0.4%
    Flights276
  • Delta Air Lines
    On-time69%
    Medianon time
    p9080 min
    Cancel1.5%
    Flights960

Why flights run late

Delay causes

  • Airline41%
  • Weather0%
  • Air traffic (NAS)24%
  • Late aircraft35%
  • Security0%

Most delay minutes here are attributed to Airline.

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly BOS → 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 — 81% on time.

  • Mornings81% on time · p90 30 min · 2,068 flights
  • Middays70% on time · p90 60 min · 1,149 flights
  • Evenings61% on time · p90 95 min · 968 flights
  • Overnights60% on time · p90 100 min · 210 flights
  • Afternoons60% on time · p90 85 min · 401 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 68% to 78% on time.

  • Saturdays78% on time · p90 50 min · 569 flights
  • Tuesdays75% on time · p90 60 min · 703 flights
  • Wednesdays73% on time · p90 45 min · 705 flights
  • Mondays72% on time · p90 60 min · 718 flights
  • Sundays69% on time · p90 80 min · 682 flights
  • Fridays69% on time · p90 60 min · 712 flights
  • Thursdays68% on time · p90 65 min · 707 flights
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Keep exploring

Related pages

Delay predictorfor this route→BOS airportBoston→AUS airportAustin→Southwest Airlines on this routecarrier detail→Southwest Airlinesairline profile→

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.