OnTimeStats

Historical on-time performance

Scranton to Chicago

632 miData through May 2026Source: US DOT · BTS

Flights on AVP–ORD arrive on time 74% of the time over the last 12 months.

On-time rate74%arrived within 15 min
p90 delay55 min1 in 10 flights is worse (tail risk)
Cancelled2.2%of scheduled flights

based on 744 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.

  • SkyWest Airlines
    On-time76%
    Medianon time
    p90115 min
    Cancel2.2%
    Flights91
  • Envoy Air
    On-time73%
    Medianon time
    p9055 min
    Cancel2.1%
    Flights653

Why flights run late

Delay causes

  • Airline24%
  • Weather9%
  • Air traffic (NAS)24%
  • Late aircraft43%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline0%
  • Weather56%
  • Air traffic (NAS)44%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 16 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 AVP → ORD

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 — 83% on time.

  • Mornings83% on time · p90 30 min · 949 flights
  • Afternoons71% on time · p90 70 min · 278 flights
  • Evenings63% on time · p90 75 min · 781 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 67% to 77% on time.

  • Saturdays77% on time · p90 55 min · 246 flights
  • Tuesdays76% on time · p90 50 min · 257 flights
  • Wednesdays75% on time · p90 45 min · 278 flights
  • Mondays74% on time · p90 65 min · 307 flights
  • Sundays74% on time · p90 70 min · 311 flights
  • Thursdays71% on time · p90 55 min · 303 flights
  • Fridays67% on time · p90 60 min · 309 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.