OnTimeStats

Historical on-time performance

Las Vegas to Atlanta

1,747 miData through May 2026Source: US DOT · BTS

Flights on LAS–ATL 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)
Cancelled1.1%of scheduled flights

based on 4,670 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.

  • Delta Air Lines
    On-time85%
    Medianon time
    p9025 min
    Cancel1.0%
    Flights3,356
  • Southwest Airlines
    On-time83%
    Medianon time
    p9020 min
    Cancel0.7%
    Flights721
  • Spirit Airlines
    On-time78%
    Medianon time
    p9060 min
    Cancel1.0%
    Flights105
  • Frontier Airlines
    On-time70%
    Medianon time
    p9050 min
    Cancel2.9%
    Flights488

Why flights run late

Delay causes

  • Airline52%
  • Weather0%
  • Air traffic (NAS)15%
  • Late aircraft32%
  • Security0%

Most delay minutes here are attributed to Airline.

When flights don't go

Why flights were cancelled

  • Airline52%
  • Weather48%
  • Air traffic (NAS)0%
  • Security0%

Most cancellations here are attributed to Airline. Shares are among 52 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 → ATL

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 — 89% on time.

  • Mornings89% on time · p90 15 min · 4,464 flights
  • Early mornings80% on time · p90 35 min · 805 flights
  • Afternoons79% on time · p90 35 min · 1,686 flights
  • Overnights79% on time · p90 35 min · 3,736 flights
  • Middays78% on time · p90 40 min · 3,345 flights
  • Evenings72% on time · p90 45 min · 966 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 78% to 87% on time.

  • Wednesdays87% on time · p90 20 min · 2,072 flights
  • Tuesdays86% on time · p90 20 min · 2,046 flights
  • Saturdays83% on time · p90 25 min · 2,075 flights
  • Thursdays79% on time · p90 35 min · 2,191 flights
  • Mondays79% on time · p90 35 min · 2,202 flights
  • Fridays78% on time · p90 35 min · 2,207 flights
  • Sundays78% on time · p90 40 min · 2,209 flights

Keep exploring

Related pages

Delay predictorfor this route→LAS airportLas Vegas→ATL airportAtlanta→Delta Air Linesairline profile→Southwest Airlinesairline profile→Frontier Airlinesairline profile→Seasonal delay patternsguide→

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.