OnTimeStats

Historical on-time performance

Chicago to Savannah

773 miData through Dec 2025Source: US DOT · BTS

Flights on ORD–SAV arrive on time 80% of the time over the last 12 months.

On-time rate80%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled1.4%of scheduled flights

based on 927 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

Too close to call — no single carrier is clearly more on-time here.

  • United Airlines
    On-time83%
    Medianon time
    p9035 min
    Cancel0.2%
    Flights530
  • Republic Airways
    On-time86%
    Medianon time
    p9025 min
    Cancel2.5%
    Flights203
  • SkyWest Airlines
    On-time70%
    Medianon time
    p9045 min
    Cancel6.1%
    Flights66
  • American Airlines
    On-time66%
    Medianon time
    p9060 min
    Cancel2.3%
    Flights128

Why flights run late

Delay causes

  • Airline28%
  • Weather6%
  • Air traffic (NAS)12%
  • Late aircraft53%
  • 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 → SAV

All airlines · rolling 36 months (2023-01 .. 2025-12).

Best time of day

Mornings are the most reliable time of day to fly this route — 84% on time.

  • Mornings84% on time · p90 25 min · 1,131 flights
  • Middays79% on time · p90 30 min · 998 flights
  • Evenings78% on time · p90 35 min · 980 flights

Best day of week

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

  • Tuesdays82% on time · p90 30 min · 408 flights
  • Mondays82% on time · p90 25 min · 453 flights
  • Fridays81% on time · p90 30 min · 448 flights
  • Thursdays80% on time · p90 30 min · 445 flights
  • Saturdays80% on time · p90 35 min · 509 flights
  • Wednesdays80% on time · p90 30 min · 407 flights
  • Sundays77% on time · p90 40 min · 462 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.