OnTimeStats

Historical on-time performance

Chicago to South Bend

84 miData through Dec 2025Source: US DOT · BTS

Flights on ORD–SBN arrive on time 66% of the time over the last 12 months.

On-time rate66%arrived within 15 min
p90 delay90 min1 in 10 flights is worse (tail risk)
Cancelled2.5%of scheduled flights

based on 2,363 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • SkyWest Airlines
    On-time66%
    Medianon time
    p9090 min
    Cancel2.5%
    Flights2,363

Why flights run late

Delay causes

  • Airline34%
  • Weather11%
  • Air traffic (NAS)16%
  • Late aircraft38%
  • 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 → SBN

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 66% to 76% on time.

  • Overnights76% on time · p90 45 min · 1,083 flights
  • Mornings76% on time · p90 45 min · 115 flights · limited
  • Middays75% on time · p90 55 min · 1,147 flights
  • Afternoons69% on time · p90 70 min · 1,752 flights
  • Evenings66% on time · p90 95 min · 2,004 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 64% to 73% on time.

  • Tuesdays73% on time · p90 65 min · 873 flights
  • Mondays72% on time · p90 70 min · 875 flights
  • Saturdays72% on time · p90 60 min · 865 flights
  • Thursdays72% on time · p90 60 min · 857 flights
  • Wednesdays71% on time · p90 80 min · 871 flights
  • Fridays70% on time · p90 65 min · 867 flights
  • Sundays64% on time · p90 100 min · 893 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.