OnTimeStats

Historical on-time performance

Boston to Raleigh-durham

612 miData through Dec 2025Source: US DOT · BTS

Flights on BOS–RDU arrive on time 74% of the time over the last 12 months.

On-time rate74%arrived within 15 min
p90 delay65 min1 in 10 flights is worse (tail risk)
Cancelled1.3%of scheduled flights

based on 2,707 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.

  • Republic Airways
    On-time77%
    Medianon time
    p9035 min
    Cancel0.0%
    Flights39
  • Delta Air Lines
    On-time76%
    Medianon time
    p9070 min
    Cancel1.2%
    Flights1,470
  • JetBlue Airways
    On-time73%
    Medianon time
    p9060 min
    Cancel1.4%
    Flights1,198

Why flights run late

Delay causes

  • Airline38%
  • Weather1%
  • Air traffic (NAS)11%
  • Late aircraft50%
  • 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 BOS → RDU

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 — 85% on time.

  • Mornings85% on time · p90 25 min · 2,764 flights
  • Middays79% on time · p90 45 min · 2,347 flights
  • Afternoons73% on time · p90 65 min · 1,259 flights
  • Evenings64% on time · p90 100 min · 1,716 flights
  • Overnights62% on time · p90 90 min · 878 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 71% to 80% on time.

  • Wednesdays80% on time · p90 40 min · 1,258 flights
  • Tuesdays79% on time · p90 45 min · 1,250 flights
  • Saturdays77% on time · p90 55 min · 1,011 flights
  • Thursdays76% on time · p90 65 min · 1,348 flights
  • Mondays75% on time · p90 60 min · 1,387 flights
  • Fridays72% on time · p90 75 min · 1,385 flights
  • Sundays71% on time · p90 75 min · 1,325 flights
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Keep exploring

Related pages

Delay predictorfor this route→BOS airportBoston→RDU airportRaleigh-durham→American Airlines on this routecarrier detail→American Airlinesairline profile→

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.