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Flight Reliability

B6 1604 · JetBlue Airways

San Juan → New York (SJU–JFK)

86
Pretty Reliable
WanderNerd Reliability Score
87%
Arrive within 15 minutes
2 min early
Average arrival delay
2.0%
Cancelled
10 min early
Median arrival delay

Based on 347 historical flights. Data through May 2026.

What the data says

Morning flights do better here.

B6 1604 departing between 6–9 AM arrived on time 92% of the time, versus 83% between 12–3 PM.

Saturday is the weak spot.

B6 1604 arrived on time 92% of the time on Fridays. On Saturdays: 81%.

Better than the SJU–JFK route average.

B6 1604 arrived on time 87% of the time, versus 80% across the SJU–JFK route.

Better than the JetBlue Airways network average.

B6 1604 arrived on time 87% of the time, versus 73% across the JetBlue Airways network.

The breakdown

On-time by weekday
  • Mon92%(48 flights)
  • Tue89%(47 flights)
  • Wed85%(48 flights)
  • Thu83%(48 flights)
  • Fri92%(49 flights)
  • Sat81%(48 flights)
  • Sun86%(51 flights)
On-time by departure window
  • 3–6 AM90%(10 flights)
  • 6–9 AM92%(145 flights)
  • 9 AM–12 PM—(7 flights)
  • 12–3 PM83%(157 flights)
  • 6–9 PM87%(15 flights)
  • 9 PM–12 AM—(5 flights)
On-time trend by month
94%
May

Jun 90% → May 94% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202590%30
July 202580%30
August 202574%31
September 202590%30
October 202577%31
November 202597%29
December 202594%31
January 202678%27
February 202689%26
March 202693%30
April 202693%28
May 202694%16
Departures on time
83%
Diverted
0.3%
Flights flown
339
Months covered
12

Same route, other flights

Keep nerding

Based on 347 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.