OnTimeStats

Historical on-time performance

Washington to Cleveland

288 miData through May 2026Source: US DOT · BTS

Flights on IAD–CLE arrive on time 82% of the time over the last 12 months.

On-time rate82%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled1.0%of scheduled flights

based on 770 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

Not enough comparable data to name a most-on-time carrier — low-data carriers aren't ranked.

  • United Airlines
    On-time83%
    Medianon time
    p9035 min
    Cancel0.6%
    Flights657
  • Republic Airways
    On-time77%
    Medianon time
    p9060 min
    Cancel3.5%
    Flights113

Why flights run late

Delay causes

  • Airline34%
  • Weather9%
  • Air traffic (NAS)15%
  • Late aircraft43%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline38%
  • Weather50%
  • Air traffic (NAS)13%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 8 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 IAD → CLE

All airlines · rolling 36 months (2023-06 .. 2026-05).

Best time of day

Mornings are the most reliable time of day to fly this route — 94% on time.

  • Mornings94% on time · p90 5 min · 456 flights
  • Middays88% on time · p90 15 min · 452 flights
  • Overnights81% on time · p90 30 min · 854 flights
  • Evenings72% on time · p90 55 min · 629 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 77% to 85% on time.

  • Tuesdays85% on time · p90 25 min · 373 flights
  • Wednesdays84% on time · p90 30 min · 361 flights
  • Saturdays84% on time · p90 25 min · 249 flights
  • Mondays84% on time · p90 20 min · 392 flights
  • Fridays84% on time · p90 30 min · 371 flights
  • Sundays81% on time · p90 30 min · 352 flights
  • Thursdays77% on time · p90 35 min · 377 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.