OnTimeStats

Historical on-time performance

Chicago to Norfolk

717 miData through May 2026Source: US DOT · BTS

Flights on ORD–ORF arrive on time 69% of the time over the last 12 months.

On-time rate69%arrived within 15 min
p90 delay65 min1 in 10 flights is worse (tail risk)
Cancelled2.6%of scheduled flights

based on 1,509 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Envoy Airbest
    On-time84%
    Medianon time
    p9025 min
    Cancel1.9%
    Flights317
  • Republic Airways
    On-time71%
    Medianon time
    p9065 min
    Cancel1.0%
    Flights311
  • SkyWest Airlines
    On-time68%
    Medianon time
    p9030 min
    Cancel2.3%
    Flights44
  • United Airlines
    On-time67%
    Medianon time
    p9070 min
    Cancel1.5%
    Flights714
  • PSA Airlines
    On-time41%
    Median15 min
    p90120 min
    Cancel14.6%
    Flights123

Why flights run late

Delay causes

  • Airline28%
  • Weather7%
  • Air traffic (NAS)16%
  • Late aircraft50%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline5%
  • Weather79%
  • Air traffic (NAS)15%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 39 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 ORD → ORF

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 66% to 80% on time.

  • Mornings80% on time · p90 35 min · 586 flights
  • Middays77% on time · p90 50 min · 1,047 flights
  • Overnights77% on time · p90 50 min · 273 flights
  • Afternoons74% on time · p90 55 min · 345 flights
  • Evenings66% on time · p90 70 min · 1,878 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 69% to 76% on time.

  • Tuesdays76% on time · p90 45 min · 573 flights
  • Saturdays76% on time · p90 55 min · 592 flights
  • Wednesdays74% on time · p90 50 min · 577 flights
  • Mondays72% on time · p90 60 min · 599 flights
  • Thursdays71% on time · p90 60 min · 598 flights
  • Sundays70% on time · p90 60 min · 600 flights
  • Fridays69% on time · p90 60 min · 592 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.