OnTimeStats

Historical on-time performance

Chicago to Norfolk

704 miData through Dec 2025Source: US DOT · BTS

Flights on MDW–ORF arrive on time 73% of the time over the last 12 months.

On-time rate73%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled0.7%of scheduled flights

based on 541 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlines
    On-time73%
    Medianon time
    p9050 min
    Cancel0.7%
    Flights541

Why flights run late

Delay causes

  • Airline34%
  • Weather0%
  • Air traffic (NAS)16%
  • Late aircraft48%
  • Security1%

Most delay minutes here are attributed to Late aircraft.

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly MDW → ORF

All airlines · rolling 36 months (2023-01 .. 2025-12).

Best time of day

On-time rates are fairly even by time of day on this route — ranging from 59% to 85% on time.

  • Mornings85% on time · p90 25 min · 151 flights · limited
  • Middays79% on time · p90 30 min · 511 flights
  • Afternoons70% on time · p90 40 min · 227 flights
  • Evenings67% on time · p90 50 min · 614 flights
  • Overnights59% on time · p90 65 min · 232 flights

Best day of week

Saturdays are the most reliable day to fly this route — 81% on time.

  • Saturdays81% on time · p90 25 min · 185 flights · limited
  • Tuesdays72% on time · p90 50 min · 249 flights
  • Wednesdays72% on time · p90 40 min · 246 flights
  • Thursdays71% on time · p90 40 min · 260 flights
  • Mondays70% on time · p90 40 min · 263 flights
  • Fridays69% on time · p90 50 min · 262 flights
  • Sundays69% on time · p90 60 min · 270 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.