OnTimeStats

Historical on-time performance

Chicago to Lansing

179 miData through May 2026Source: US DOT · BTS

Flights on ORD–LAN arrive on time 71% of the time over the last 12 months.

On-time rate71%arrived within 15 min
p90 delay55 min1 in 10 flights is worse (tail risk)
Cancelled2.5%of scheduled flights

based on 807 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Envoy Air
    On-time71%
    Medianon time
    p9055 min
    Cancel2.5%
    Flights807

Why flights run late

Delay causes

  • Airline13%
  • Weather11%
  • Air traffic (NAS)23%
  • Late aircraft53%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline0%
  • Weather70%
  • Air traffic (NAS)30%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 20 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 → LAN

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 68% to 78% on time.

  • Mornings78% on time · p90 30 min · 254 flights
  • Afternoons73% on time · p90 35 min · 194 flights · limited
  • Middays69% on time · p90 70 min · 140 flights · limited
  • Overnights68% on time · p90 55 min · 426 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 64% to 81% on time.

  • Tuesdays81% on time · p90 35 min · 146 flights · limited
  • Saturdays75% on time · p90 35 min · 138 flights · limited
  • Wednesdays72% on time · p90 70 min · 149 flights · limited
  • Thursdays71% on time · p90 45 min · 150 flights · limited
  • Sundays71% on time · p90 55 min · 150 flights · limited
  • Mondays70% on time · p90 50 min · 150 flights · limited
  • Fridays64% on time · p90 50 min · 151 flights · limited

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.