OnTimeStats

Historical on-time performance

ORDFSD

Chicago to Sioux Falls

462 miData through Dec 2025Source: US DOT · BTS

Flights on ORD–FSD arrive on time 62% of the time over the last 12 months.

On-time rate62%arrived within 15 min
Median delayon timetypical arrival
p90 delay90 min1 in 10 flights is worsetail risk
Cancelled2.9%of scheduled flights

based on 1,475 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Republic Airways
    On-time54%
    Median5 min
    p9070 min
    Cancel5.1%
    Flights39
  • Envoy Airbest
    On-time76%
    Medianon time
    p9035 min
    Cancel1.5%
    Flights262
  • SkyWest Airlines
    On-time61%
    Medianon time
    p9095 min
    Cancel3.5%
    Flights931
  • United Airlines
    On-time51%
    Median10 min
    p90100 min
    Cancel1.6%
    Flights243

Why flights run late

Delay causes

  • Airline50%
  • Weather17%
  • Air traffic (NAS)10%
  • Late aircraft23%
  • Security0%

Most delay minutes here are attributed to Airline.

Over time

On-time trend

By season

On-time rate by month

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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.