OnTimeStats

Historical on-time performance

Detroit to Greensboro

460 miData through Dec 2025Source: US DOT · BTS

Flights on DTW–GSO arrive on time 72% of the time over the last 12 months.

On-time rate72%arrived within 15 min
p90 delay70 min1 in 10 flights is worse (tail risk)
Cancelled0.5%of scheduled flights

based on 206 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • SkyWest Airlines
    On-time72%
    Medianon time
    p9070 min
    Cancel0.5%
    Flights206

Why flights run late

Delay causes

  • Airline50%
  • Weather46%
  • Air traffic (NAS)4%
  • Late aircraft0%
  • 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 → GSO

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 81% to 88% on time.

  • Middays88% on time · p90 20 min · 205 flights
  • Overnights86% on time · p90 20 min · 492 flights
  • Afternoons81% on time · p90 40 min · 357 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 81% to 87% on time.

  • Wednesdays87% on time · p90 15 min · 165 flights · limited
  • Tuesdays87% on time · p90 30 min · 162 flights · limited
  • Mondays86% on time · p90 25 min · 170 flights · limited
  • Thursdays86% on time · p90 20 min · 170 flights · limited
  • Saturdays84% on time · p90 15 min · 83 flights · limited
  • Fridays82% on time · p90 45 min · 171 flights · limited
  • Sundays81% on time · p90 45 min · 162 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.