OnTimeStats

Historical on-time performance

Chicago to Lansing

179 miData through Dec 2025Source: US DOT · BTS

Flights on ORD–LAN arrive on time 73% of the time over the last 12 months.

On-time rate73%arrived within 15 min
p90 delay45 min1 in 10 flights is worse (tail risk)
Cancelled1.8%of scheduled flights

based on 742 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Envoy Air
    On-time73%
    Medianon time
    p9045 min
    Cancel1.8%
    Flights742

Why flights run late

Delay causes

  • Airline20%
  • Weather7%
  • Air traffic (NAS)22%
  • Late aircraft51%
  • Security0%

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 ORD → LAN

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 70% to 81% on time.

  • Evenings81% on time · p90 35 min · 96 flights · limited
  • Mornings81% on time · p90 25 min · 216 flights
  • Middays73% on time · p90 45 min · 173 flights · limited
  • Afternoons71% on time · p90 35 min · 152 flights · limited
  • Overnights70% on time · p90 55 min · 276 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 65% to 85% on time.

  • Tuesdays85% on time · p90 25 min · 125 flights · limited
  • Saturdays79% on time · p90 30 min · 126 flights · limited
  • Mondays77% on time · p90 30 min · 133 flights · limited
  • Thursdays74% on time · p90 45 min · 132 flights · limited
  • Wednesdays72% on time · p90 50 min · 129 flights · limited
  • Sundays72% on time · p90 50 min · 135 flights · limited
  • Fridays65% on time · p90 45 min · 133 flights · limited
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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.