OnTimeStats

Historical on-time performance

Cleveland to St. Louis

487 miData through May 2026Source: 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)
Cancelled0.1%of scheduled flights

based on 705 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
    Cancel0.1%
    Flights705

Why flights run late

Delay causes

  • Airline38%
  • Weather5%
  • Air traffic (NAS)9%
  • Late aircraft48%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline0%
  • Weather100%
  • Air traffic (NAS)0%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 1 cancellations with a reported cause (BTS reports causes from June 2003).

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 (2023-06 .. 2026-05).

Best time of day

On-time rates are fairly even by time of day on this route — ranging from 69% to 92% on time.

  • Mornings92% on time · p90 5 min · 839 flights
  • Middays89% on time · p90 15 min · 356 flights
  • Evenings81% on time · p90 30 min · 507 flights
  • Afternoons71% on time · p90 40 min · 154 flights · limited
  • Overnights69% on time · p90 45 min · 271 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 80% to 88% on time.

  • Wednesdays88% on time · p90 15 min · 321 flights
  • Tuesdays88% on time · p90 15 min · 321 flights
  • Thursdays85% on time · p90 25 min · 333 flights
  • Mondays84% on time · p90 25 min · 337 flights
  • Fridays83% on time · p90 25 min · 337 flights
  • Saturdays81% on time · p90 30 min · 178 flights · limited
  • Sundays80% on time · p90 30 min · 300 flights

Keep exploring

Related pages

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.