OnTimeStats

Historical on-time performance

Salt Lake City to Austin

1,086 miData through May 2026Source: US DOT · BTS

Flights on SLC–AUS 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)
Cancelled0.6%of scheduled flights

based on 1,561 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.

  • SkyWest Airlines
    On-time90%
    Medianon time
    p9010 min
    Cancel0.0%
    Flights31
  • Delta Air Lines
    On-time81%
    Medianon time
    p9035 min
    Cancel0.6%
    Flights1,087
  • Southwest Airlines
    On-time80%
    Medianon time
    p9030 min
    Cancel0.7%
    Flights443

Why flights run late

Delay causes

  • Airline50%
  • Weather2%
  • Air traffic (NAS)20%
  • Late aircraft27%
  • Security0%

Most delay minutes here are attributed to Airline.

When flights don't go

Why flights were cancelled

  • Airline44%
  • Weather33%
  • Air traffic (NAS)22%
  • Security0%

Most cancellations here are attributed to Airline. Shares are among 9 cancellations with a reported cause (BTS reports causes from June 2003).

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly SLC → AUS

All airlines · rolling 36 months (2023-06 .. 2026-05).

Best time of day

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

  • Mornings87% on time · p90 20 min · 1,388 flights
  • Middays79% on time · p90 35 min · 1,711 flights
  • Evenings78% on time · p90 45 min · 1,212 flights
  • Overnights78% on time · p90 35 min · 505 flights
  • Afternoons68% on time · p90 45 min · 408 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 77% to 84% on time.

  • Wednesdays84% on time · p90 25 min · 759 flights
  • Tuesdays83% on time · p90 25 min · 729 flights
  • Saturdays81% on time · p90 35 min · 630 flights
  • Mondays79% on time · p90 35 min · 755 flights
  • Fridays79% on time · p90 40 min · 797 flights
  • Thursdays78% on time · p90 35 min · 786 flights
  • Sundays77% on time · p90 40 min · 768 flights

Keep exploring

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.