OnTimeStats

Historical on-time performance

Raleigh-durham to Newark

416 miData through May 2026Source: US DOT · BTS

Flights on RDU–EWR arrive on time 73% of the time over the last 12 months.

On-time rate73%arrived within 15 min
p90 delay75 min1 in 10 flights is worse (tail risk)
Cancelled2.3%of scheduled flights

based on 1,727 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.

  • Republic Airways
    On-time77%
    Medianon time
    p9050 min
    Cancel3.2%
    Flights189
  • United Airlines
    On-time74%
    Medianon time
    p9075 min
    Cancel2.1%
    Flights1,507
  • Spirit Airlines
    On-time29%
    Median20 min
    p90105 min
    Cancel3.2%
    Flights31

Why flights run late

Delay causes

  • Airline13%
  • Weather2%
  • Air traffic (NAS)60%
  • Late aircraft26%
  • Security0%

Most delay minutes here are attributed to Air traffic (NAS).

When flights don't go

Why flights were cancelled

  • Airline8%
  • Weather77%
  • Air traffic (NAS)15%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 39 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 RDU → EWR

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 — 86% on time.

  • Mornings86% on time · p90 20 min · 2,201 flights
  • Middays80% on time · p90 40 min · 1,646 flights
  • Afternoons69% on time · p90 105 min · 880 flights
  • Evenings56% on time · p90 120 min · 2,073 flights
  • Overnights56% on time · p90 105 min · 140 flights · limited

Best day of week

On-time rates are fairly even by day on this route — ranging from 69% to 76% on time.

  • Saturdays76% on time · p90 65 min · 816 flights
  • Tuesdays76% on time · p90 45 min · 980 flights
  • Wednesdays76% on time · p90 65 min · 978 flights
  • Mondays72% on time · p90 70 min · 1,063 flights
  • Thursdays71% on time · p90 70 min · 1,053 flights
  • Sundays70% on time · p90 75 min · 980 flights
  • Fridays69% on time · p90 85 min · 1,070 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.