--- title: "Buffalo (BUF) to San Juan (SJU) flights: who flies it" description: "JetBlue Airways flies nonstop from BUF to SJU, about 4 flights a week as B6 635, scheduled at 4h 33m to 4h 50m. See award seats by date on 2LNR, the next 14 days free." canonical: "https://2lnr.com/routes/buf-sju" url: "https://2lnr.com/routes/buf-sju.md" date_modified: "2026-10-18T05:10:47Z" --- # Buffalo to San Juan (BUF-SJU): nonstop flights and award space JetBlue Airways flies the BUF to SJU nonstop about 4 times a week. In the timetable below it flies as B6 635, scheduled at 4h 33m to 4h 50m for the 1,849 miles. 2LNR tracks award seats on JetBlue Airways across every BUF to SJU date, so you can see whether a seat exists before you move points. Schedule last confirmed October 18, 2026. Departure times come from 2LNR's schedule data; confirm with the airline before you book. Updated October 22, 2026. See BUF to SJU on the interactive map [Get started free](https://2lnr.com/login) 4 Flights a week, 4-week average 4h 33m to 4h 50m Scheduled flight time 1,849 mi Nonstop distance Free To get started ## Buffalo to San Juan flight schedule Scheduled nonstop departures for BUF to SJU starting October 22, 2026, last checked against our schedule feed on October 18, 2026. Airlines retime and cancel flights, so confirm with the airline before you book. Scheduled nonstop departures from Buffalo (BUF) to San Juan (SJU) | Date | Flight | Airline | Departs BUF | Arrives SJU | Duration | Aircraft | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | Fri, Oct 23 | B6 635 | JetBlue Airways | 08:15 | 12:54 | 4h 39m | [Airbus A320](https://2lnr.com/seatmaps/b6/a320.md) | | Sat, Oct 24 | B6 635 | JetBlue Airways | 08:15 | 12:54 | 4h 39m | Airbus A320 | | Mon, Oct 26 | B6 635 | JetBlue Airways | 08:00 | 12:50 | 4h 50m | Airbus A320 | | Wed, Oct 28 | B6 635 | JetBlue Airways | 08:00 | 12:50 | 4h 50m | Airbus A320 | | Fri, Oct 30 | B6 635 | JetBlue Airways | 08:00 | 12:50 | 4h 50m | Airbus A320 | | Sat, Oct 31 | B6 635 | JetBlue Airways | 08:00 | 12:50 | 4h 50m | Airbus A320 | | Mon, Nov 2 | B6 635 | JetBlue Airways | 07:55 | 13:28 | 4h 33m | Airbus A320 | Showing all 7 scheduled BUF to SJU departures across 7 days with service, starting October 22, 2026. Later dates are on the interactive map. Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline hasn't filed that value in the schedule data we hold. Aircraft are the equipment the airline filed, named where the code pins down one type and shown as the family or the bare code where it doesn't. Swaps can happen up to departure. See every BUF to SJU date on the interactive map ## Aircraft on the Buffalo to San Juan nonstop JetBlue Airways flies the [Airbus A320](https://2lnr.com/seatmaps/b6/a320.md) on every departure in the schedule table on this page. Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure. ## Award seats on BUF to SJU departures 2LNR tracks award seats on JetBlue Airways, date by date. Open the calendar for Buffalo to San Juan to see whether a seat exists before you move points, the next 14 days free on every product and the full horizon on Pro. JetBlue Airways award space was open on 7 of the 8 Buffalo to San Juan departure dates from October 19 to November 1 that 2LNR checked in the 7 days to October 19, 2026. ### See real availability Award seats by date on the BUF to SJU departures 2LNR tracks, checked against live inventory so you know what's open before you book. ### Set an alert Premium inventory turns over fast. Watch this route on Pro and 2LNR notifies you when space appears on a date you're tracking. ### Plan on the map See BUF to SJU on the interactive route map, with schedules, connections, and route statistics. ## Airlines flying Buffalo to San Juan nonstop Carriers operating BUF to SJU nonstop in the current schedule. Where 2LNR tracks the carrier, its departures show award space by date. - [JetBlue Airways (B6) route map](https://2lnr.com/routes/airlines/b6.md)\ [The aircraft B6 flies](https://2lnr.com/seatmaps/b6.md) See BUF to SJU on the interactive map → ## Frequently asked questions about BUF to SJU **How long is the flight from Buffalo (BUF) to San Juan (SJU)?** Scheduled flight times from Buffalo (BUF) to San Juan (SJU) run from 4h 33m to 4h 50m across the departures in the schedule table on this page. The nonstop covers about 1,849 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book. **Which airlines fly nonstop from BUF to SJU?** JetBlue Airways is currently the only airline flying BUF to SJU nonstop. 2LNR tracks award seats on JetBlue Airways. **How many flights a week are there from BUF to SJU?** About 4 nonstop flights a week run between Buffalo (BUF) and San Juan (SJU) in the current schedule, operated by JetBlue Airways. Frequency shifts by season, and the schedule table on this page shows what is scheduled next. **What time do flights from BUF to SJU depart?** Scheduled BUF to SJU nonstops in the next 7 days with service leave between 07:55 and 08:15, local time at Buffalo. The schedule table on this page lists every departure by date, with its arrival time and aircraft. **Which flights operate BUF to SJU nonstop?** JetBlue Airways flies B6 635 nonstop from Buffalo (BUF) to San Juan (SJU), the only flight number in the schedule table on this page. The table lists each date with its departure and arrival times and aircraft. **How do I check award availability on BUF to SJU?** Open the BUF to SJU route on the interactive map or the matrix to see award seats by date on JetBlue Airways, the next 14 days free and the full horizon on Pro. On Pro you can also set an alert on the route and 2LNR notifies you when space opens. Flying the other way? See [SJU to BUF nonstop flights and award space](https://2lnr.com/routes/sju-buf.md). Award seats rather than schedules? See [JetBlue Airways award availability](https://2lnr.com/awards/b6.md). Looking beyond this route? See [every route from Buffalo (BUF)](https://2lnr.com/routes/buf.md), or [every route from San Juan (SJU)](https://2lnr.com/routes/sju.md). Nonstops to San Juan (SJU) from other airports within 150 miles of Buffalo (BUF): - [Toronto (YYZ) to San Juan (SJU)](https://2lnr.com/routes/yyz-sju.md), 68 miles from BUF Distances are great-circle between the airports, not driving distance. - [How to plan an upgrade by route](https://2lnr.com/guides/upgrade-strategy.md) - [How to read award availability by date](https://2lnr.com/guides/award-availability.md) ## See BUF to SJU award space by date See what's open by date on this route, the next 14 days free on every product and the full horizon on Pro. [Get started free](https://2lnr.com/login)