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Flight Reliability

B6 734 · JetBlue Airways

San Francisco → Boston (SFO–BOS)

78
Usually Fine
WanderNerd Reliability Score
80%
Arrive within 15 minutes
4 min
Average arrival delay
2.4%
Cancelled
11 min early
Median arrival delay

Based on 334 historical flights. Data through May 2026.

What the data says

The late departure is the smart one here.

B6 734 departing between 6–9 PM arrived on time 83% of the time, versus 73% between 9 PM–12 AM.

Skip Thursday if you can.

B6 734 arrived on time 87% of the time on Saturdays. On Thursdays: 74%.

Better than the JetBlue Airways network average.

B6 734 arrived on time 80% of the time, versus 73% across the JetBlue Airways network.

The breakdown

On-time by weekday
  • Mon80%(50 flights)
  • Tue85%(47 flights)
  • Wed85%(47 flights)
  • Thu74%(50 flights)
  • Fri79%(52 flights)
  • Sat87%(30 flights)
  • Sun76%(49 flights)
On-time by departure window
  • 12–3 PM82%(78 flights)
  • 3–6 PM79%(71 flights)
  • 6–9 PM83%(128 flights)
  • 9 PM–12 AM73%(48 flights)
On-time trend by month
86%
May

Jun 85% → May 86% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202585%27
July 202556%27
August 202592%26
September 202578%18
October 202581%26
November 202567%27
December 202580%30
January 202690%29
February 202685%26
March 202677%31
April 202686%29
May 202686%29
Departures on time
79%
Diverted
0.3%
Flights flown
325
Months covered
12

Same route, other flights

Keep nerding

Based on 334 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.