San Juan, PR → Boston, MA flight delays
SJU → BOS · all airlines · 215 flights · April 2026 · source: US BTS
This route is delayed
30%of the time, by +46 min on average when it does.
This is history, not a promise — your specific flight could well be on time.
On-time rate
70%
Delayed 3h+
0%
Cancelled
0%
Avg when late
+46m
Best & worst day to fly
Most on-time
Tuesday
delayed 18%
Worst
Wednesday
delayed 48%
Which airline is most punctual on SJU → BOS?
JetBluedelayed 29%
Deltadelayed 35%
Frequently asked
How often is the San Juan, PR to Boston, MA flight delayed?
About 30% of SJU → BOS flights arrive late (15+ minutes), by an average of 46 minutes when they do, based on 215 flights in April 2026.
Which airline is most punctual on SJU → BOS?
JetBlue, delayed 29% of the time — the best of the 2 airlines flying this route.
What is the best day to fly SJU → BOS?
Tuesday is the most on-time (delayed 18%), while Wednesday is the worst (delayed 48%).
Airport overviews