OnTimeStats

Historical on-time performance

Reno to Chicago

1,671 miData through Dec 2025Source: US DOT · BTS

Flights on RNO–ORD arrive on time 82% of the time over the last 12 months.

On-time rate82%arrived within 15 min
p90 delay20 min1 in 10 flights is worse (tail risk)
Cancelled1.0%of scheduled flights

based on 307 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • United Airlines
    On-time82%
    Medianon time
    p9020 min
    Cancel1.0%
    Flights307

Why flights run late

Delay causes

  • Airline32%
  • Weather0%
  • Air traffic (NAS)50%
  • Late aircraft18%
  • Security0%

Most delay minutes here are attributed to Air traffic (NAS).

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly RNO → ORD

All airlines · rolling 36 months (2023-01 .. 2025-12).

Best time of day

On-time rates are fairly even by time of day on this route — ranging from 76% to 81% on time.

  • Mornings81% on time · p90 20 min · 489 flights
  • Overnights76% on time · p90 55 min · 378 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 78% to 85% on time.

  • Tuesdays85% on time · p90 20 min · 123 flights · limited
  • Wednesdays81% on time · p90 30 min · 129 flights · limited
  • Saturdays79% on time · p90 45 min · 140 flights · limited
  • Sundays79% on time · p90 50 min · 135 flights · limited
  • Fridays78% on time · p90 20 min · 130 flights · limited
  • Thursdays78% on time · p90 55 min · 127 flights · limited
  • Mondays78% on time · p90 30 min · 120 flights · limited
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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.