OnTimeStats

Historical on-time performance

Philadelphia to Las Vegas

2,176 miData through Dec 2025Source: US DOT · BTS

Flights on PHL–LAS arrive on time 72% of the time over the last 12 months.

On-time rate72%arrived within 15 min
p90 delay55 min1 in 10 flights is worse (tail risk)
Cancelled1.7%of scheduled flights

based on 1,494 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

Too close to call — no single carrier is clearly more on-time here.

  • American Airlines
    On-time72%
    Medianon time
    p9055 min
    Cancel1.7%
    Flights1,277
  • Spirit Airlines
    On-time74%
    Medianon time
    p9045 min
    Cancel2.4%
    Flights125
  • Frontier Airlines
    On-time74%
    Medianon time
    p9060 min
    Cancel1.1%
    Flights92

Why flights run late

Delay causes

  • Airline40%
  • Weather3%
  • Air traffic (NAS)24%
  • Late aircraft33%
  • Security1%

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 PHL → LAS

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 63% to 85% on time.

  • Middays85% on time · p90 30 min · 203 flights
  • Mornings84% on time · p90 25 min · 1,753 flights
  • Afternoons68% on time · p90 85 min · 922 flights
  • Overnights67% on time · p90 75 min · 649 flights
  • Evenings63% on time · p90 75 min · 1,424 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 67% to 75% on time.

  • Wednesdays75% on time · p90 50 min · 680 flights
  • Saturdays75% on time · p90 50 min · 635 flights
  • Tuesdays75% on time · p90 50 min · 684 flights
  • Mondays73% on time · p90 70 min · 744 flights
  • Thursdays72% on time · p90 60 min · 726 flights
  • Fridays71% on time · p90 60 min · 743 flights
  • Sundays67% on time · p90 70 min · 739 flights
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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.