OnTimeStats

Historical on-time performance

GSPORD

Greenville to Chicago

577 miData through Dec 2025Source: US DOT · BTS

Flights on GSP–ORD arrive on time 75% of the time over the last 12 months.

On-time rate75%arrived within 15 min
Median delayon timetypical arrival
p90 delay50 min1 in 10 flights is worsetail risk
Cancelled2.8%of scheduled flights

based on 1,205 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • United Airlinesbest
    On-time93%
    Medianon time
    p905 min
    Cancel0.0%
    Flights30
  • Republic Airways
    On-time87%
    Medianon time
    p9015 min
    Cancel2.8%
    Flights324
  • PSA Airlines
    On-time80%
    Medianon time
    p9025 min
    Cancel2.4%
    Flights123
  • SkyWest Airlines
    On-time61%
    Median5 min
    p9090 min
    Cancel5.7%
    Flights140
  • Envoy Air
    On-time70%
    Medianon time
    p9050 min
    Cancel2.4%
    Flights588

Why flights run late

Delay causes

  • Airline22%
  • Weather6%
  • Air traffic (NAS)29%
  • Late aircraft42%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

Over time

On-time trend

By season

On-time rate by month

Advertisement

Keep exploring

Related pages

Delay predictorfor this route→GSP airportGreenville→ORD airportChicago→United Airlines on this routecarrier detail→United Airlinesairline profile→

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.