OnTimeStats

Historical on-time performance

Norfolk to Denver

1,553 miData through Dec 2025Source: US DOT · BTS

Flights on ORF–DEN arrive on time 79% of the time over the last 12 months.

On-time rate79%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.4%of scheduled flights

based on 552 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • United Airlinesbest
    On-time84%
    Medianon time
    p9025 min
    Cancel0.6%
    Flights340
  • Southwest Airlines
    On-time71%
    Medianon time
    p9050 min
    Cancel0.0%
    Flights212

Why flights run late

Delay causes

  • Airline53%
  • Weather3%
  • Air traffic (NAS)28%
  • Late aircraft16%
  • Security0%

Most delay minutes here are attributed to Airline.

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly ORF → DEN

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 59% to 83% on time.

  • Mornings83% on time · p90 25 min · 1,152 flights
  • Middays81% on time · p90 25 min · 140 flights · limited
  • Afternoons68% on time · p90 50 min · 328 flights
  • Evenings59% on time · p90 60 min · 83 flights · limited

Best day of week

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

  • Tuesdays81% on time · p90 30 min · 233 flights
  • Mondays80% on time · p90 30 min · 224 flights
  • Wednesdays79% on time · p90 25 min · 197 flights · limited
  • Thursdays78% on time · p90 35 min · 264 flights
  • Sundays77% on time · p90 35 min · 307 flights
  • Saturdays76% on time · p90 50 min · 281 flights
  • Fridays76% on time · p90 40 min · 226 flights
Advertisement

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.