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Flight Reliability

B6 403 · JetBlue Airways

New York → San Juan (JFK–SJU)

71
Usually Fine
WanderNerd Reliability Score
75%
Arrive within 15 minutes
9 min
Average arrival delay
3.0%
Cancelled
4 min early
Median arrival delay

Based on 236 historical flights. Data through May 2026.

What the data says

Morning flights do better here.

B6 403 departing between 3–6 AM arrived on time 80% of the time, versus 71% between 9 PM–12 AM.

Saturdays have been rough.

B6 403 arrived on time 88% of the time on Tuesdays and just 58% on Saturdays. That gap is worth planning around.

A bit ahead of the JFK–SJU route.

B6 403 arrived on time 75% of the time, versus 72% across the JFK–SJU route.

Keep a backup plan handy.

B6 403 was cancelled 3.0% of the time. Typical for U.S. flights is around 1–2%.

The breakdown

On-time by weekday
  • Mon66%(32 flights)
  • Tue88%(33 flights)
  • Wed74%(31 flights)
  • Thu73%(33 flights)
  • Fri84%(32 flights)
  • Sat58%(33 flights)
  • Sun83%(35 flights)
On-time by departure window
  • 3–6 AM80%(102 flights)
  • 6–9 AM—(1 flights)
  • 9 AM–12 PM—(3 flights)
  • 9 PM–12 AM71%(123 flights)
On-time trend by month
100%
May

Jun 80% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202580%30
July 202586%29
August 202568%31
November 202579%29
December 202567%30
February 202660%15
March 202673%30
April 202685%13
May 2026100%11
Departures on time
71%
Diverted
0%
Flights flown
229
Months covered
12

Same route, other flights

Keep nerding

Based on 236 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.