OnTimeStats

Historical on-time performance

Las Vegas to Philadelphia

2,176 miData through May 2026Source: US DOT · BTS

Flights on LAS–PHL arrive on time 83% of the time over the last 12 months.

On-time rate83%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled1.8%of scheduled flights

based on 1,306 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.

  • American Airlines
    On-time83%
    Medianon time
    p9025 min
    Cancel1.9%
    Flights1,276
  • Spirit Airlines
    On-time77%
    Medianon time
    p9035 min
    Cancel0.0%
    Flights30

Why flights run late

Delay causes

  • Airline47%
  • Weather4%
  • Air traffic (NAS)16%
  • Late aircraft32%
  • Security0%

Most delay minutes here are attributed to Airline.

When flights don't go

Why flights were cancelled

  • Airline0%
  • Weather96%
  • Air traffic (NAS)4%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 24 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 LAS → PHL

All airlines · rolling 36 months (2023-06 .. 2026-05).

Best time of day

Early mornings are the most reliable time of day to fly this route — 94% on time.

  • Early mornings94% on time · p90 5 min · 125 flights · limited
  • Mornings81% on time · p90 25 min · 1,234 flights
  • Afternoons80% on time · p90 50 min · 133 flights · limited
  • Overnights79% on time · p90 35 min · 2,304 flights
  • Middays75% on time · p90 50 min · 1,074 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 75% to 85% on time.

  • Tuesdays85% on time · p90 20 min · 668 flights
  • Wednesdays84% on time · p90 20 min · 687 flights
  • Saturdays81% on time · p90 35 min · 630 flights
  • Mondays77% on time · p90 45 min · 707 flights
  • Fridays77% on time · p90 45 min · 735 flights
  • Thursdays76% on time · p90 40 min · 718 flights
  • Sundays75% on time · p90 40 min · 725 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.