OnTimeStats

Historical on-time performance

Sacramento to Atlanta

2,092 miData through Dec 2025Source: US DOT · BTS

Flights on SMF–ATL arrive on time 89% of the time over the last 12 months.

On-time rate89%arrived within 15 min
p90 delay10 min1 in 10 flights is worse (tail risk)
Cancelled1.5%of scheduled flights

based on 1,002 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Delta Air Lines
    On-time89%
    Medianon time
    p9010 min
    Cancel1.5%
    Flights1,002

Why flights run late

Delay causes

  • Airline62%
  • Weather4%
  • Air traffic (NAS)10%
  • Late aircraft23%
  • 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 SMF → ATL

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 84% to 91% on time.

  • Overnights91% on time · p90 10 min · 702 flights
  • Mornings90% on time · p90 10 min · 1,096 flights
  • Middays84% on time · p90 20 min · 1,093 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 84% to 90% on time.

  • Wednesdays90% on time · p90 10 min · 401 flights
  • Thursdays89% on time · p90 15 min · 445 flights
  • Fridays89% on time · p90 10 min · 448 flights
  • Tuesdays89% on time · p90 15 min · 390 flights
  • Mondays88% on time · p90 15 min · 441 flights
  • Sundays86% on time · p90 25 min · 444 flights
  • Saturdays84% on time · p90 15 min · 325 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.