Flight Reliability
B6 321 · JetBlue Airways
Boston → West Palm Beach (BOS–PBI)
47
Bring Snacks
WanderNerd Reliability Score
- 61%
- Arrive within 15 minutes
- 24 min
- Average arrival delay
- 3.9%
- Cancelled
- 4 min
- Median arrival delay
Based on 153 historical flights. Data through May 2026.
What the data says
Morning-you made the right choice.
B6 321 departing between 9 AM–12 PM arrived on time 77% of the time, versus 58% between 3–6 PM.
Sunday scaries are real for this one.
B6 321 arrived on time 75% of the time on Mondays and just 38% on Sundays. That gap is worth planning around.
A bit behind the BOS–PBI route.
B6 321 arrived on time 61% of the time, versus 67% across the BOS–PBI route.
Lagging the JetBlue Airways network.
B6 321 arrived on time 61% of the time, versus 73% across the JetBlue Airways network.
The breakdown
- Mon75%(20 flights)
- Tue67%(18 flights)
- Wed74%(19 flights)
- Thu65%(23 flights)
- Fri64%(22 flights)
- Sat50%(24 flights)
- Sun38%(21 flights)
- 9 AM–12 PM77%(22 flights)
- 3–6 PM58%(38 flights)
- 6–9 PM58%(86 flights)
- 9 PM–12 AM—(1 flights)
75%
May
Dec 36% → May 75% on time
| Month | On-time percentage | Flights |
|---|---|---|
| December 2025 | 36% | 14 |
| January 2026 | 59% | 29 |
| February 2026 | 54% | 24 |
| March 2026 | 64% | 25 |
| April 2026 | 67% | 27 |
| May 2026 | 75% | 20 |
- Departures on time
- 65%
- Diverted
- 0%
- Flights flown
- 147
- Months covered
- 7
Same route, other flights
Keep nerding
Based on 153 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.