No delays reported for B6 304 (SJU → JFK) as of 6:51 PM ET. It arrived on time 60.3% of the time in June-August 2026. When it was late, the average delay was 1h 9m. 9.9% of flights were cancelled. Right now there are no reported delays at SJU, JFK.
High cancellation risk
Should be in the air from SJU, scheduled to land at JFK at 10:28 PM local time. This flight number flew about 6 days a week in June-August 2026, so it may not operate today. Line up a backup option.
9.9% of its flights were cancelled in June-August 2026.
Estimate from the schedule, live position and airport conditions, if this flight operates today. Check JetBlue for official times.
Book a backup seat SJU → JFKThis flight is cancelled often; a refundable backup costs little
What to do now
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Route and schedule
| Leg | Scheduled | On time |
|---|---|---|
| SJU → JFK San Juan, PR to New York, NY | 6:30 PM → 10:28 PM | 60% |
Local times. Schedules change; check your booking.
How reliable is B6 304?
| Arrived on time (within 15 min) | 60.3% |
| Average delay when late | 69 min |
| Cancelled | 9.9% |
| Diverted | 0% |
| Flights tracked | 81 |
Best and worst days to fly B6 304
B6 304 was most reliable on Tuesdays (80% on time) and least reliable on Wednesdays (36%).
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Why it runs late
| Late-arriving plane | |
| Airline (crew, maintenance) | |
| Air traffic system | |
| Extreme weather |
Share of delay minutes by cause, as reported by JetBlue to the Department of Transportation.
Other flights SJU → JFK
All flights on this route, ranked
Live status at its airports
We show airport-wide airport status, not this flight's gate or live position. For that, check the JetBlue app.
JetBlue delays and what you're owed · Airline phone numbers
About this data
On-time history: U.S. Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, June-August 2026. Live conditions: live airport status. "On time" means arriving within 15 minutes of schedule.
Common questions
Is B6 304 delayed today?
Right now there are no reported delays at SJU, JFK. Checked 6:51 PM ET. For this flight's gate and exact status, check the JetBlue app.
Is B6 304 usually on time?
B6 304 arrived within 15 minutes of schedule 60.3% of the time in June-August 2026, with an average delay of 69 minutes when late.
How often is B6 304 cancelled?
9.9% of B6 304 flights were cancelled in June-August 2026.