OnTimeStats

Historical on-time performance

San Juan to Raleigh-durham

1,433 miData through Dec 2025Source: US DOT · BTS

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

On-time rate80%arrived within 15 min
p90 delay45 min1 in 10 flights is worse (tail risk)
Cancelled0.4%of scheduled flights

based on 229 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • JetBlue Airways
    On-time80%
    Medianon time
    p9045 min
    Cancel0.4%
    Flights229

Why flights run late

Delay causes

  • Airline34%
  • Weather3%
  • Air traffic (NAS)10%
  • Late aircraft53%
  • 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 SJU → 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 58% to 78% on time.

  • Mornings78% on time · p90 35 min · 511 flights
  • Evenings75% on time · p90 80 min · 144 flights · limited
  • Middays73% on time · p90 55 min · 643 flights
  • Afternoons58% on time · p90 85 min · 212 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 67% to 80% on time.

  • Fridays80% on time · p90 40 min · 254 flights
  • Wednesdays77% on time · p90 35 min · 186 flights · limited
  • Sundays73% on time · p90 45 min · 222 flights
  • Thursdays71% on time · p90 50 min · 215 flights
  • Saturdays70% on time · p90 70 min · 223 flights
  • Tuesdays69% on time · p90 75 min · 185 flights · limited
  • Mondays67% on time · p90 70 min · 252 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.