OnTimeStats

Historical on-time performance

Las Vegas to Raleigh-durham

2,027 miData through May 2026Source: US DOT · BTS

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

On-time rate79%arrived within 15 min
p90 delay30 min1 in 10 flights is worse (tail risk)
Cancelled2.0%of scheduled flights

based on 461 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.

  • Delta Air Lines
    On-time89%
    Medianon time
    p9010 min
    Cancel1.1%
    Flights277
  • Southwest Airlines
    On-time64%
    Medianon time
    p9055 min
    Cancel3.3%
    Flights184

Why flights run late

Delay causes

  • Airline43%
  • Weather1%
  • Air traffic (NAS)16%
  • Late aircraft40%
  • Security0%

Most delay minutes here are attributed to Airline.

When flights don't go

Why flights were cancelled

  • Airline44%
  • Weather56%
  • Air traffic (NAS)0%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 9 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 → RDU

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

Best time of day

Overnights are the most reliable time of day to fly this route — 85% on time.

  • Overnights85% on time · p90 25 min · 1,214 flights
  • Afternoons69% on time · p90 55 min · 304 flights
  • Middays66% on time · p90 55 min · 227 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 73% to 90% on time.

  • Tuesdays90% on time · p90 10 min · 218 flights
  • Wednesdays86% on time · p90 25 min · 245 flights
  • Saturdays81% on time · p90 25 min · 274 flights
  • Mondays78% on time · p90 40 min · 257 flights
  • Fridays74% on time · p90 45 min · 281 flights
  • Sundays73% on time · p90 35 min · 307 flights
  • Thursdays73% on time · p90 45 min · 277 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.