OnTimeStats

Historical on-time performance

Rapid City to Chicago

779 miData through May 2026Source: US DOT · BTS

Flights on RAP–ORD arrive on time 67% of the time over the last 12 months.

On-time rate67%arrived within 15 min
p90 delay60 min1 in 10 flights is worse (tail risk)
Cancelled1.8%of scheduled flights

based on 546 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

Not enough comparable data to name a most-on-time carrier — low-data carriers aren't ranked.

  • United Airlines
    On-time74%
    Medianon time
    p9055 min
    Cancel0.8%
    Flights127
  • Envoy Air
    On-time65%
    Medianon time
    p9060 min
    Cancel1.3%
    Flights233
  • SkyWest Airlines
    On-time65%
    Medianon time
    p9075 min
    Cancel3.2%
    Flights186

Why flights run late

Delay causes

  • Airline30%
  • Weather10%
  • Air traffic (NAS)29%
  • Late aircraft32%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline0%
  • Weather70%
  • Air traffic (NAS)30%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 10 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 RAP → ORD

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 70% to 76% on time.

  • Middays76% on time · p90 45 min · 1,042 flights
  • Mornings71% on time · p90 60 min · 205 flights
  • Afternoons70% on time · p90 70 min · 112 flights · limited

Best day of week

On-time rates are fairly even by day on this route — ranging from 69% to 77% on time.

  • Saturdays77% on time · p90 55 min · 205 flights
  • Mondays77% on time · p90 50 min · 213 flights
  • Wednesdays76% on time · p90 35 min · 197 flights · limited
  • Tuesdays73% on time · p90 50 min · 201 flights
  • Thursdays72% on time · p90 55 min · 212 flights
  • Fridays71% on time · p90 55 min · 214 flights
  • Sundays69% on time · p90 45 min · 215 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.