OnTimeStats

Historical on-time performance

Nashville to St. Louis

272 miData through Dec 2025Source: US DOT · BTS

Flights on BNA–STL arrive on time 80% of the time over the last 12 months.

On-time rate80%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled1.7%of scheduled flights

based on 1,276 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlines
    On-time80%
    Medianon time
    p9035 min
    Cancel1.7%
    Flights1,276

Why flights run late

Delay causes

  • Airline20%
  • Weather2%
  • Air traffic (NAS)9%
  • Late aircraft69%
  • 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 → STL

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 — 93% on time.

  • Mornings93% on time · p90 5 min · 1,097 flights
  • Middays85% on time · p90 20 min · 728 flights
  • Afternoons78% on time · p90 30 min · 395 flights
  • Overnights76% on time · p90 35 min · 908 flights
  • Evenings74% on time · p90 45 min · 681 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 77% to 86% on time.

  • Tuesdays86% on time · p90 20 min · 564 flights
  • Wednesdays85% on time · p90 20 min · 561 flights
  • Saturdays84% on time · p90 20 min · 355 flights
  • Thursdays83% on time · p90 30 min · 602 flights
  • Mondays82% on time · p90 25 min · 607 flights
  • Fridays82% on time · p90 25 min · 611 flights
  • Sundays77% on time · p90 30 min · 509 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.