OnTimeStats

Historical on-time performance

Greensboro to Atlanta

306 miData through May 2026Source: US DOT · BTS

Flights on GSO–ATL arrive on time 87% of the time over the last 12 months.

On-time rate87%arrived within 15 min
p90 delay15 min1 in 10 flights is worse (tail risk)
Cancelled2.3%of scheduled flights

based on 2,748 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-time87%
    Medianon time
    p9015 min
    Cancel2.3%
    Flights2,748

Why flights run late

Delay causes

  • Airline42%
  • Weather11%
  • Air traffic (NAS)8%
  • Late aircraft39%
  • Security0%

Most delay minutes here are attributed to Airline.

When flights don't go

Why flights were cancelled

  • Airline57%
  • Weather41%
  • Air traffic (NAS)2%
  • Security0%

Most cancellations here are attributed to Airline. Shares are among 63 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 GSO → ATL

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

Best time of day

On-time rates are fairly even by time of day on this route — ranging from 79% to 91% on time.

  • Mornings91% on time · p90 10 min · 2,602 flights
  • Middays90% on time · p90 10 min · 2,018 flights
  • Afternoons85% on time · p90 25 min · 1,325 flights
  • Evenings84% on time · p90 35 min · 1,420 flights
  • Overnights79% on time · p90 55 min · 246 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 84% to 90% on time.

  • Wednesdays90% on time · p90 10 min · 1,055 flights
  • Thursdays90% on time · p90 10 min · 1,154 flights
  • Tuesdays89% on time · p90 15 min · 1,055 flights
  • Saturdays89% on time · p90 10 min · 922 flights
  • Mondays87% on time · p90 15 min · 1,159 flights
  • Fridays87% on time · p90 15 min · 1,155 flights
  • Sundays84% on time · p90 30 min · 1,111 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.