OnTimeStats

Historical on-time performance

Cleveland to San Francisco

2,161 miData through Dec 2025Source: US DOT · BTS

Flights on CLE–SFO arrive on time 89% of the time over the last 12 months.

On-time rate89%arrived within 15 min
p90 delay15 min1 in 10 flights is worse (tail risk)
Cancelled0.0%of scheduled flights

based on 617 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • United Airlines
    On-time89%
    Medianon time
    p9015 min
    Cancel0.0%
    Flights617

Why flights run late

Delay causes

  • Airline23%
  • Weather4%
  • Air traffic (NAS)55%
  • Late aircraft17%
  • Security0%

Most delay minutes here are attributed to Air traffic (NAS).

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly CLE → SFO

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 — 88% on time.

  • Mornings88% on time · p90 15 min · 1,159 flights
  • Evenings82% on time · p90 30 min · 580 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 83% to 89% on time.

  • Tuesdays89% on time · p90 15 min · 219 flights
  • Mondays87% on time · p90 20 min · 271 flights
  • Saturdays87% on time · p90 15 min · 226 flights
  • Thursdays86% on time · p90 15 min · 258 flights
  • Wednesdays86% on time · p90 20 min · 245 flights
  • Sundays83% on time · p90 30 min · 261 flights
  • Fridays83% on time · p90 20 min · 265 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.