OnTimeStats

Historical on-time performance

Atlanta to Greensboro

306 miData through Dec 2025Source: US DOT · BTS

Flights on ATL–GSO 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 2,667 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Delta Air Lines
    On-time80%
    Medianon time
    p9040 min
    Cancel1.4%
    Flights2,667

Why flights run late

Delay causes

  • Airline46%
  • Weather9%
  • Air traffic (NAS)15%
  • Late aircraft30%
  • 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 ATL → 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 77% to 89% on time.

  • Mornings89% on time · p90 10 min · 1,091 flights
  • Middays87% on time · p90 15 min · 1,978 flights
  • Afternoons82% on time · p90 30 min · 1,344 flights
  • Overnights80% on time · p90 35 min · 1,871 flights
  • Evenings77% on time · p90 45 min · 1,152 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 79% to 88% on time.

  • Wednesdays88% on time · p90 15 min · 1,033 flights
  • Tuesdays86% on time · p90 25 min · 1,031 flights
  • Mondays84% on time · p90 25 min · 1,137 flights
  • Saturdays84% on time · p90 25 min · 909 flights
  • Thursdays83% on time · p90 30 min · 1,120 flights
  • Fridays80% on time · p90 35 min · 1,120 flights
  • Sundays79% on time · p90 40 min · 1,086 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.