OnTimeStats

Historical on-time performance

Birmingham to Las Vegas

1,618 miData through Dec 2025Source: US DOT · BTS

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

On-time rate83%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.3%of scheduled flights

based on 337 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlines
    On-time83%
    Medianon time
    p9035 min
    Cancel0.3%
    Flights337

Why flights run late

Delay causes

  • Airline21%
  • Weather1%
  • Air traffic (NAS)15%
  • Late aircraft63%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly BHM → LAS

All airlines · rolling 36 months (2023-01 .. 2025-12).

Best time of day

Mornings are the most reliable time of day to fly this route — 91% on time.

  • Mornings91% on time · p90 10 min · 118 flights · limited
  • Middays84% on time · p90 25 min · 492 flights
  • Afternoons71% on time · p90 50 min · 218 flights
  • Evenings59% on time · p90 45 min · 54 flights · limited

Best day of week

On-time rates are fairly even by day on this route — ranging from 74% to 85% on time.

  • Tuesdays85% on time · p90 25 min · 117 flights · limited
  • Wednesdays85% on time · p90 25 min · 117 flights · limited
  • Mondays81% on time · p90 30 min · 118 flights · limited
  • Saturdays81% on time · p90 25 min · 143 flights · limited
  • Sundays79% on time · p90 25 min · 153 flights · limited
  • Thursdays74% on time · p90 60 min · 117 flights · limited
  • Fridays74% on time · p90 50 min · 117 flights · limited
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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.