Buffalo (BUF) to San Juan (SJU) flights
JetBlue flies nonstop from Buffalo Niagara International Airport to Luis Munoz Marin International Airport, with about 4 flights a week in July 2026. The 1,845-mile flight takes about 4h 7m gate to gate.
- Distance
- 1,845 mi · 2,969 km
- Flight time
- 4h 7m
- Airlines
- 1
- Seats filled
- 82%
Airlines flying BUF to SJU
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| JetBlue | 4 | Airbus A320-100/200 | 9,530 | 4h 7m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
BUF to SJU flight schedule
1 flight numbers flew this route in August 2026. The first usually leaves at 7:00am and the last at 7:00am. Times are local and can change; check with the airline before you book.
| Flight | Departs | Arrives | Days flown in August 2026 | On time (12 months) |
|---|---|---|---|---|
| B6 635JetBlue | 7:00am | 11:38am | 18 | 84% |
Is BUF to SJU on time?
From September 2025 to August 2026, 84% of 91 flights arrived within 15 minutes of schedule and 1.1% were cancelled. Most delay time was caused by air traffic control and airport congestion (37%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| JetBlue | 91 | 84% | 10 min | 1.1% |
Airlines as sold: flights operated by regional partners count under the airline on the ticket. Average delay is across all completed flights, early arrivals counted as zero.
On-time arrivals by departure time
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| March 2026 | 3 | 392 | |
| April 2026 | 17 | 1,872 | |
| May 2026 | 18 | 2,340 | |
| June 2026 | 17 | 2,360 | |
| July 2026 | 17 | 2,566 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.