OnTimeStats

Historical on-time performance

Austin to San Francisco

1,504 miData through Dec 2025Source: US DOT · BTS

Flights on AUS–SFO arrive on time 81% of the time over the last 12 months.

On-time rate81%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.7%of scheduled flights

based on 2,555 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • United Airlinesbest
    On-time84%
    Medianon time
    p9025 min
    Cancel0.7%
    Flights1,566
  • Alaska Airlines
    On-time79%
    Medianon time
    p9035 min
    Cancel0.7%
    Flights683
  • Southwest Airlines
    On-time71%
    Medianon time
    p9040 min
    Cancel0.0%
    Flights122
  • Delta Air Lines
    On-time68%
    Medianon time
    p9060 min
    Cancel1.1%
    Flights184

Why flights run late

Delay causes

  • Airline26%
  • Weather3%
  • Air traffic (NAS)36%
  • Late aircraft35%
  • Security0%

Most delay minutes here are attributed to Air traffic (NAS).

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly AUS → SFO

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 — 86% on time.

  • Mornings86% on time · p90 20 min · 2,715 flights
  • Middays78% on time · p90 40 min · 961 flights
  • Afternoons73% on time · p90 50 min · 1,707 flights
  • Overnights71% on time · p90 70 min · 409 flights
  • Evenings68% on time · p90 70 min · 892 flights

Best day of week

Saturdays are the most reliable day to fly this route — 83% on time.

  • Saturdays83% on time · p90 25 min · 853 flights
  • Tuesdays80% on time · p90 35 min · 958 flights
  • Mondays79% on time · p90 40 min · 1,014 flights
  • Wednesdays79% on time · p90 40 min · 939 flights
  • Fridays76% on time · p90 45 min · 988 flights
  • Thursdays76% on time · p90 50 min · 982 flights
  • Sundays75% on time · p90 50 min · 950 flights
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Keep exploring

Related pages

Delay predictorfor this route→AUS airportAustin→SFO airportSan Francisco→Horizon Air on this routecarrier detail→Horizon Airairline 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.