OnTimeStats

Airport on-time performance

GSP

Greenville

Data through Dec 2025Source: US DOT · BTS
On-time rate79%flights departing here that arrived on time
Median delayon timetypical departure delay
p90 delay45 min1 in 10 departures is worsetail risk
Cancelled2.1%of scheduled departures
Left the gate on time81%departures that pushed back within 15 min of schedule (DepDel15)

based on 14,179 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

As a connection hub

Arriving here (inbound performance)

These figures reflect inbound flights arriving at this airport — relevant for connections and layovers.

73%arrived on time here
(within 15 min, inbound flights)
  • On time73%
  • 15–59 min late15%
  • 1–2 hr late6%
  • 2 hr+ late4%
  • Cancelled or diverted2%

Arrival outcomes for inbound flights. Last segment = cancelled or diverted.

Bad day: 1 in 10 flights arrives more than 55 min late.

By airline

Carriers departing here (last 12 months)

Delay = arrival delay (ArrDel15-based)

  • Delta Air Linesbest
    On-time88%
    Medianon time
    p9015 min
    Cancel1.1%
    Flights2,873
  • Southwest Airlines
    On-time84%
    Medianon time
    p9025 min
    Cancel0.6%
    Flights1,249
  • United Airlines
    On-time79%
    Medianon time
    p9065 min
    Cancel0.3%
    Flights305
  • Republic Airways
    On-time78%
    Medianon time
    p9050 min
    Cancel4.5%
    Flights1,829
  • Envoy Air
    On-time77%
    Medianon time
    p9040 min
    Cancel1.4%
    Flights1,535
  • PSA Airlines
    On-time76%
    Medianon time
    p9055 min
    Cancel3.1%
    Flights3,344
  • American Airlines
    On-time74%
    Medianon time
    p9065 min
    Cancel1.7%
    Flights1,016
  • SkyWest Airlines
    On-time74%
    Medianon time
    p9060 min
    Cancel2.8%
    Flights390

Over time

Departure on-time trend

By season

On-time rate by month

Where flights go

Busiest routes

GSP → ATL→GSP → ORD→GSP → DFW→GSP → CLT→GSP → EWR→GSP → DTW→GSP → IAH→GSP → IAD→GSP → LGA→GSP → CVG→
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Will you make a connection at GSP? →

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.