Flight Reliability
B6 1219 · JetBlue Airways
Boston → Miami (BOS–MIA)
83
Pretty Reliable
WanderNerd Reliability Score
- 84%
- Arrive within 15 minutes
- 3 min early
- Average arrival delay
- 1.1%
- Cancelled
- 11 min early
- Median arrival delay
Based on 94 historical flights. Data through May 2026.
What the data says
The 6–9 AM departure wins.
B6 1219 departing between 6–9 AM arrived on time 87% of the time, versus 74% between 9 AM–12 PM.
Friday is doing you no favors.
B6 1219 arrived on time 100% of the time on Mondays and just 58% on Fridays. That gap is worth planning around.
A bit ahead of the BOS–MIA route.
B6 1219 arrived on time 84% of the time, versus 77% across the BOS–MIA route.
Better than the JetBlue Airways network average.
B6 1219 arrived on time 84% of the time, versus 73% across the JetBlue Airways network.
The breakdown
- Mon100%(13 flights)
- Tue100%(14 flights)
- Wed85%(13 flights)
- Thu69%(13 flights)
- Fri58%(12 flights)
- Sat77%(13 flights)
- Sun93%(14 flights)
- 6–9 AM87%(69 flights)
- 9 AM–12 PM74%(23 flights)
77%
Aug
Jun 87% → Aug 77% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 87% | 30 |
| July 2025 | 86% | 29 |
| August 2025 | 77% | 31 |
- Departures on time
- 85%
- Diverted
- 1.1%
- Flights flown
- 92
- Months covered
- 4
Same route, other flights
Keep nerding
Based on 94 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.