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Flight Reliability

B6 276 · JetBlue Airways

San Juan → Hartford (SJU–BDL)97% of its flights flew this route. The rest (MCO–PVD) are included in these numbers.

61
A Little Dicey
WanderNerd Reliability Score
67%
Arrive within 15 minutes
26 min
Average arrival delay
1.4%
Cancelled
0 min
Median arrival delay

Based on 221 historical flights. Data through May 2026.

What the data says

The 12–3 PM departure wins.

B6 276 departing between 12–3 PM arrived on time 77% of the time, versus 65% between 6–9 PM.

Sunday scaries are real for this one.

B6 276 arrived on time 87% of the time on Wednesdays and just 55% on Sundays. That gap is worth planning around.

A bit behind the SJU–BDL route.

B6 276 arrived on time 67% of the time, versus 72% across the SJU–BDL route.

A bit behind the JetBlue Airways network.

B6 276 arrived on time 67% of the time, versus 73% across the JetBlue Airways network.

The breakdown

On-time by weekday
  • Mon69%(32 flights)
  • Tue65%(31 flights)
  • Wed87%(30 flights)
  • Thu65%(31 flights)
  • Fri72%(32 flights)
  • Sat58%(31 flights)
  • Sun55%(31 flights)
On-time by departure window
  • 9 AM–12 PM—(3 flights)
  • 12–3 PM77%(13 flights)
  • 3–6 PM67%(96 flights)
  • 6–9 PM65%(106 flights)
On-time trend by month
82%
May

Jun 93% → May 82% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202593%30
July 202561%31
August 202548%31
September 202563%30
October 202544%25
December 202564%14
January 202679%29
February 202673%11
May 202682%11
Departures on time
71%
Diverted
0%
Flights flown
218
Months covered
10

Same route, other flights

Keep nerding

Based on 221 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.