OnTimeStats

Historical on-time performance

Nashville to Valparaiso

389 miData through Dec 2025Source: US DOT · BTS

Flights on BNA–VPS arrive on time 86% of the time over the last 12 months.

On-time rate86%arrived within 15 min
p90 delay20 min1 in 10 flights is worse (tail risk)
Cancelled0.7%of scheduled flights

based on 836 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlines
    On-time86%
    Medianon time
    p9020 min
    Cancel0.7%
    Flights836

Why flights run late

Delay causes

  • Airline30%
  • Weather1%
  • Air traffic (NAS)13%
  • Late aircraft56%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly BNA → 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 64% to 94% on time.

  • Mornings94% on time · p90 on time · 933 flights
  • Middays92% on time · p90 10 min · 306 flights
  • Afternoons81% on time · p90 30 min · 550 flights
  • Evenings77% on time · p90 40 min · 673 flights
  • Overnights64% on time · p90 55 min · 213 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 79% to 88% on time.

  • Saturdays88% on time · p90 15 min · 326 flights
  • Tuesdays88% on time · p90 15 min · 376 flights
  • Mondays86% on time · p90 20 min · 413 flights
  • Sundays84% on time · p90 20 min · 351 flights
  • Wednesdays84% on time · p90 30 min · 377 flights
  • Thursdays83% on time · p90 25 min · 417 flights
  • Fridays79% on time · p90 35 min · 415 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.