OnTimeStats

Historical on-time performance

Detroit to Savannah

705 miData through Dec 2025Source: US DOT · BTS

Flights on DTW–SAV arrive on time 79% of the time over the last 12 months.

On-time rate79%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.8%of scheduled flights

based on 249 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Delta Air Linesbest
    On-time92%
    Medianon time
    p905 min
    Cancel0.6%
    Flights157
  • SkyWest Airlines
    On-time58%
    Median5 min
    p9060 min
    Cancel1.1%
    Flights92

Why flights run late

Delay causes

  • Airline67%
  • Weather11%
  • Air traffic (NAS)18%
  • Late aircraft5%
  • Security0%

Most delay minutes here are attributed to Airline.

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly DTW → SAV

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 63% to 90% on time.

  • Mornings90% on time · p90 10 min · 217 flights
  • Middays87% on time · p90 15 min · 473 flights
  • Afternoons63% on time · p90 65 min · 234 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 72% to 89% on time.

  • Wednesdays89% on time · p90 15 min · 132 flights · limited
  • Tuesdays84% on time · p90 30 min · 128 flights · limited
  • Thursdays83% on time · p90 30 min · 127 flights · limited
  • Mondays83% on time · p90 25 min · 131 flights · limited
  • Fridays81% on time · p90 25 min · 128 flights · limited
  • Saturdays79% on time · p90 25 min · 151 flights · limited
  • Sundays72% on time · p90 75 min · 127 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.