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Flight Reliability

B6 821 · JetBlue Airways

Boston → West Palm Beach (BOS–PBI)

56
A Little Dicey
WanderNerd Reliability Score
72%
Arrive within 15 minutes
8 min
Average arrival delay
6.0%
Cancelled
0 min
Median arrival delay

Based on 183 historical flights. Data through May 2026.

What the data says

Morning flights do better here.

B6 821 departing between 6–9 AM arrived on time 77% of the time, versus 26% between 3–6 PM.

Sunday scaries are real for this one.

B6 821 arrived on time 92% of the time on Wednesdays and just 64% on Sundays. That gap is worth planning around.

A bit ahead of the BOS–PBI route.

B6 821 arrived on time 72% of the time, versus 67% across the BOS–PBI route.

Keep a backup plan handy.

B6 821 was cancelled 6.0% of the time. Typical for U.S. flights is around 1–2%.

The breakdown

On-time by weekday
  • Mon64%(25 flights)
  • Tue79%(24 flights)
  • Wed92%(25 flights)
  • Thu65%(26 flights)
  • Fri68%(25 flights)
  • Sat68%(22 flights)
  • Sun64%(25 flights)
On-time by departure window
  • 3–6 AM—(1 flights)
  • 6–9 AM77%(152 flights)
  • 3–6 PM26%(19 flights)
On-time trend by month
74%
Apr

Nov 82% → Apr 74% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
November 202582%28
December 202552%31
January 202652%27
February 202676%25
March 202693%28
April 202674%27
Departures on time
83%
Diverted
0%
Flights flown
172
Months covered
7

Same route, other flights

Keep nerding

Based on 183 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.