OnTimeStats

Historical on-time performance

Greenville to Atlanta

153 miData through May 2026Source: US DOT · BTS

Flights on GSP–ATL arrive on time 88% of the time over the last 12 months.

On-time rate88%arrived within 15 min
p90 delay15 min1 in 10 flights is worse (tail risk)
Cancelled1.7%of scheduled flights

based on 2,807 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-time88%
    Medianon time
    p9015 min
    Cancel1.7%
    Flights2,807

Why flights run late

Delay causes

  • Airline32%
  • Weather1%
  • Air traffic (NAS)24%
  • Late aircraft43%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline52%
  • Weather48%
  • Air traffic (NAS)0%
  • Security0%

Most cancellations here are attributed to Airline. Shares are among 48 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 GSP → 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 81% to 92% on time.

  • Mornings92% on time · p90 5 min · 3,056 flights
  • Middays92% on time · p90 5 min · 2,505 flights
  • Afternoons87% on time · p90 20 min · 1,371 flights
  • Overnights83% on time · p90 20 min · 126 flights · limited
  • Evenings81% on time · p90 35 min · 1,832 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 85% to 91% on time.

  • Wednesdays91% on time · p90 10 min · 1,233 flights
  • Tuesdays90% on time · p90 10 min · 1,234 flights
  • Thursdays90% on time · p90 10 min · 1,334 flights
  • Fridays89% on time · p90 10 min · 1,338 flights
  • Mondays88% on time · p90 15 min · 1,340 flights
  • Saturdays88% on time · p90 15 min · 1,084 flights
  • Sundays85% on time · p90 20 min · 1,327 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.