OnTimeStats

Historical on-time performance

Cleveland to St. Louis

487 miData through Dec 2025Source: US DOT · BTS

Flights on CLE–STL arrive on time 85% of the time over the last 12 months.

On-time rate85%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled1.4%of scheduled flights

based on 701 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlines
    On-time85%
    Medianon time
    p9025 min
    Cancel1.4%
    Flights701

Why flights run late

Delay causes

  • Airline36%
  • Weather1%
  • Air traffic (NAS)13%
  • Late aircraft49%
  • 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 CLE → STL

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 73% to 92% on time.

  • Mornings92% on time · p90 5 min · 830 flights
  • Middays90% on time · p90 15 min · 417 flights
  • Evenings79% on time · p90 35 min · 476 flights
  • Afternoons73% on time · p90 40 min · 163 flights · limited
  • Overnights73% on time · p90 45 min · 229 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 82% to 87% on time.

  • Wednesdays87% on time · p90 15 min · 323 flights
  • Tuesdays87% on time · p90 15 min · 323 flights
  • Thursdays86% on time · p90 20 min · 332 flights
  • Mondays86% on time · p90 25 min · 338 flights
  • Fridays84% on time · p90 25 min · 335 flights
  • Sundays83% on time · p90 30 min · 287 flights
  • Saturdays82% on time · p90 30 min · 177 flights · limited
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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.