San Juan (SJU) to Buffalo (BUF) flights
JetBlue flies nonstop from Luis Munoz Marin International Airport to Buffalo Niagara International Airport, with about 4 flights a week in July 2026. The 1,845-mile flight takes about 4h 21m gate to gate.
- Distance
- 1,845 mi · 2,969 km
- Flight time
- 4h 21m
- Airlines
- 1
- Seats filled
- 81%
Airlines flying SJU to BUF
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| JetBlue | 4 | Airbus A320-100/200 | 9,426 | 4h 21m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
SJU to BUF flight schedule
1 flight numbers flew this route in August 2026. The first usually leaves at 6:29pm and the last at 6:29pm. 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 634JetBlue | 6:29pm | 11:07pm | 18 | 81% |
Is SJU to BUF on time?
From September 2025 to August 2026, 81% of 91 flights arrived within 15 minutes of schedule and 1.1% were cancelled. Flights leaving around 7pm were the most punctual (91%), those around 6pm the least (77%). Most delay time was caused by late-arriving aircraft (53%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| JetBlue | 91 | 81% | 25 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 | 361 | |
| April 2026 | 17 | 2,066 | |
| May 2026 | 18 | 2,241 | |
| June 2026 | 17 | 2,296 | |
| July 2026 | 17 | 2,462 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.