OnTimeStats

Historical on-time performance

Chicago to South Bend

84 miData through May 2026Source: US DOT · BTS

Flights on ORD–SBN arrive on time 59% of the time over the last 12 months.

On-time rate59%arrived within 15 min
p90 delay100 min1 in 10 flights is worse (tail risk)
Cancelled3.9%of scheduled flights

based on 2,662 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • SkyWest Airlines
    On-time59%
    Medianon time
    p90100 min
    Cancel3.9%
    Flights2,662

Why flights run late

Delay causes

  • Airline36%
  • Weather7%
  • Air traffic (NAS)19%
  • Late aircraft38%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline1%
  • Weather85%
  • Air traffic (NAS)14%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 104 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 → SBN

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 62% to 72% on time.

  • Overnights72% on time · p90 55 min · 1,083 flights
  • Middays71% on time · p90 70 min · 1,485 flights
  • Mornings67% on time · p90 70 min · 265 flights
  • Afternoons67% on time · p90 75 min · 1,698 flights
  • Evenings62% on time · p90 100 min · 2,152 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 61% to 70% on time.

  • Tuesdays70% on time · p90 70 min · 948 flights
  • Saturdays69% on time · p90 70 min · 942 flights
  • Thursdays68% on time · p90 65 min · 947 flights
  • Wednesdays68% on time · p90 95 min · 947 flights
  • Mondays67% on time · p90 85 min · 956 flights
  • Fridays67% on time · p90 85 min · 961 flights
  • Sundays61% on time · p90 110 min · 982 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.