OnTimeStats

Historical on-time performance

Atlanta to Valparaiso

250 miData through Dec 2025Source: US DOT · BTS

Flights on ATL–VPS 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)
Cancelled1.8%of scheduled flights

based on 2,325 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-time81%
    Medianon time
    p9035 min
    Cancel1.8%
    Flights2,325

Why flights run late

Delay causes

  • Airline48%
  • Weather8%
  • Air traffic (NAS)11%
  • Late aircraft33%
  • 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 ATL → VPS

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 76% to 86% on time.

  • Mornings86% on time · p90 15 min · 1,193 flights
  • Middays86% on time · p90 20 min · 1,763 flights
  • Afternoons81% on time · p90 30 min · 1,155 flights
  • Evenings80% on time · p90 40 min · 895 flights
  • Overnights76% on time · p90 50 min · 1,519 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 75% to 87% on time.

  • Tuesdays87% on time · p90 20 min · 877 flights
  • Wednesdays87% on time · p90 20 min · 890 flights
  • Thursdays83% on time · p90 30 min · 975 flights
  • Mondays82% on time · p90 30 min · 967 flights
  • Saturdays80% on time · p90 30 min · 871 flights
  • Fridays80% on time · p90 35 min · 976 flights
  • Sundays75% on time · p90 45 min · 969 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.