OnTimeStats

Historical on-time performance

Los Angeles to Raleigh-durham

2,239 miData through Dec 2025Source: US DOT · BTS

Flights on LAX–RDU arrive on time 80% of the time over the last 12 months.

On-time rate80%arrived within 15 min
p90 delay30 min1 in 10 flights is worse (tail risk)
Cancelled0.3%of scheduled flights

based on 609 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-time80%
    Medianon time
    p9025 min
    Cancel0.3%
    Flights361
  • American Airlines
    On-time79%
    Medianon time
    p9040 min
    Cancel0.4%
    Flights248

Why flights run late

Delay causes

  • Airline43%
  • Weather0%
  • Air traffic (NAS)17%
  • Late aircraft40%
  • Security0%

Most delay minutes here are attributed to Airline.

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly LAX → RDU

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

Best time of day

On-time rates are fairly even by time of day on this route — ranging from 73% to 84% on time.

  • Middays84% on time · p90 25 min · 1,085 flights
  • Afternoons83% on time · p90 40 min · 58 flights · limited
  • Mornings80% on time · p90 40 min · 782 flights
  • Overnights73% on time · p90 40 min · 237 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 77% to 85% on time.

  • Tuesdays85% on time · p90 25 min · 297 flights
  • Mondays84% on time · p90 25 min · 338 flights
  • Thursdays83% on time · p90 40 min · 335 flights
  • Wednesdays82% on time · p90 25 min · 297 flights
  • Saturdays80% on time · p90 30 min · 222 flights
  • Sundays79% on time · p90 40 min · 336 flights
  • Fridays77% on time · p90 35 min · 337 flights
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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.