OnTimeStats

Historical on-time performance

Savannah to Chicago

773 miData through May 2026Source: US DOT · BTS

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

On-time rate73%arrived within 15 min
p90 delay55 min1 in 10 flights is worse (tail risk)
Cancelled1.4%of scheduled flights

based on 1,254 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • SkyWest Airlines
    On-time87%
    Medianon time
    p9015 min
    Cancel3.3%
    Flights60
  • Republic Airways
    On-time83%
    Medianon time
    p9020 min
    Cancel2.7%
    Flights110
  • Envoy Airbest
    On-time81%
    Medianon time
    p9025 min
    Cancel1.2%
    Flights250
  • American Airlines
    On-time70%
    Medianon time
    p9095 min
    Cancel2.5%
    Flights159
  • United Airlines
    On-time68%
    Medianon time
    p9065 min
    Cancel0.9%
    Flights675

Why flights run late

Delay causes

  • Airline31%
  • Weather9%
  • Air traffic (NAS)35%
  • Late aircraft26%
  • Security0%

Most delay minutes here are attributed to Air traffic (NAS).

When flights don't go

Why flights were cancelled

  • Airline11%
  • Weather72%
  • Air traffic (NAS)17%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 18 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 SAV → ORD

All airlines · rolling 36 months (2023-06 .. 2026-05).

Best time of day

Mornings are the most reliable time of day to fly this route — 88% on time.

  • Mornings88% on time · p90 15 min · 650 flights
  • Middays84% on time · p90 25 min · 1,793 flights
  • Afternoons68% on time · p90 50 min · 724 flights
  • Evenings64% on time · p90 45 min · 419 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 77% to 82% on time.

  • Wednesdays82% on time · p90 30 min · 470 flights
  • Thursdays82% on time · p90 25 min · 520 flights
  • Tuesdays80% on time · p90 30 min · 459 flights
  • Mondays79% on time · p90 40 min · 512 flights
  • Fridays79% on time · p90 35 min · 518 flights
  • Saturdays78% on time · p90 45 min · 574 flights
  • Sundays77% on time · p90 40 min · 537 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.