OnTimeStats

Historical on-time performance

Las Vegas to Memphis

1,416 miData through May 2026Source: US DOT · BTS

Flights on LAS–MEM arrive on time 79% of the time over the last 12 months.

On-time rate79%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled1.6%of scheduled flights

based on 182 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.

  • Spirit Airlines
    On-time90%
    Medianon time
    p9010 min
    Cancel0.0%
    Flights60
  • Southwest Airlines
    On-time73%
    Medianon time
    p9030 min
    Cancel2.5%
    Flights122

Why flights run late

Delay causes

  • Airline48%
  • Weather0%
  • Air traffic (NAS)24%
  • Late aircraft28%
  • Security0%

Most delay minutes here are attributed to Airline.

When flights don't go

Why flights were cancelled

  • Airline0%
  • Weather100%
  • Air traffic (NAS)0%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 3 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 → MEM

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

Best time of day

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

  • Mornings94% on time · p90 5 min · 745 flights
  • Middays77% on time · p90 35 min · 497 flights
  • Afternoons76% on time · p90 45 min · 509 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 79% to 88% on time.

  • Wednesdays88% on time · p90 20 min · 179 flights · limited
  • Tuesdays85% on time · p90 20 min · 185 flights · limited
  • Mondays84% on time · p90 25 min · 349 flights
  • Fridays83% on time · p90 30 min · 355 flights
  • Saturdays83% on time · p90 20 min · 185 flights · limited
  • Thursdays83% on time · p90 40 min · 281 flights
  • Sundays79% on time · p90 35 min · 293 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.