Flight history · Aug 2025 – Jul 2026 · US DOT on-time records
DL 1877 · New York (JFK) → San Juan (SJU)
Sold by Delta. Not in the Jun 6 – Jul 31, 2026 schedule; last flew 2025-12-19.
Arrives on time87%within 15 minutes, of 61 flights
Cancelled0.0%of scheduled flights
An hour or more late3%of flights that operated
When late, on average55 minlate, among flights 15+ min late
Schedule
Typical times in the Jun 6 – Jul 31, 2026 schedule, local at each airport.
- Leaves JFK
- 08:00
- Arrives SJU
- 12:56
- Flight time
- 3h 56m
- Days flown, last 8 weeks
- 0 of 56
Each square is a day, Sat Jun 6 to Fri Jul 31, two weeks per row (each column is the same weekday); filled = flew.
How late it arrives
Share of flights that operated arriving more than this late.
Horizontal: minutes late at arrival (0 to 3 hours). Vertical: share of flights later than that.
Its hour at JFK
All flights leaving New York (JFK) at 8–9 am, wherever they’re going: 87% left within 15 minutes and 3.0% were cancelled (10,302 flights in the year). Other Delta flights on this route →
Upcoming forecasts
Our odds that this flight is late or cancelled on the days we publish.