About 1 in 3 B6 2321 flights from Boston arrived 15+ minutes late, diverted or cancelled over the past year (36%); 3.8% were cancelled. The typical flight landed 2 minutes early.
B6 2321: BOS → PBI
Scheduled to leave Boston at 3:39 p.m. local time. Over the past year it arrived on time 64% of the time (315 flights), better than other B6 flights on the route at that hour (53%). Last seen in the data Jul 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 45 | 64% |
| Tuesday | 46 | 65% |
| Wednesday | 45 | 69% |
| Thursday | 46 | 65% |
| Friday | 45 | 76% |
| Saturday | 43 | 63% |
| Sunday | 45 | 49% |
Why it was late
All flights BOS → PBI · Connecting off B6 2321? Check the risk
Questions
How often is B6 2321 from BOS to PBI late?
JetBlue 2321 from Boston, MA to West Palm Beach/Palm Beach, FL arrived 15 or more minutes late, was diverted or was cancelled on 36% of 315 scheduled flights between September 2025 and August 2026. 3.8% were cancelled.
Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check JetBlue for today's flight. Method.