OnTimeStats

Historical on-time performance

RDUBOS

Raleigh-durham to Boston

612 miData through Dec 2025Source: US DOT · BTS

Flights on RDU–BOS arrive on time 77% of the time over the last 12 months.

On-time rate77%arrived within 15 min
Median delayon timetypical arrival
p90 delay55 min1 in 10 flights is worsetail 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

  • Republic Airwaysbest
    On-time82%
    Medianon time
    p9040 min
    Cancel0.0%
    Flights39
  • Delta Air Lines
    On-time78%
    Medianon time
    p9060 min
    Cancel1.2%
    Flights1,469
  • JetBlue Airways
    On-time77%
    Medianon time
    p9055 min
    Cancel1.5%
    Flights1,199

Why flights run late

Delay causes

  • Airline22%
  • Weather2%
  • Air traffic (NAS)33%
  • Late aircraft43%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

Over time

On-time trend

By season

On-time rate by month

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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.