Buffalo to San Juan BUF → SJU
Buffalo Niagara International Airport (BUF) → Luis Munoz Marin International Airport (SJU)
The cheapest return found recently is $346 with American Airlines, 12 Dec – 19 Dec, found yesterday.
Return
The cheapest return fare on each of 3 departure dates is usually $367 to $390.
Cheapest return found recently
$346
12 Dec – 19 Dec · American Airlines
Buffalo Niagara International Airport (BUF) → Luis Munoz Marin International Airport (SJU)
Leaves 12:50 p.m. · Return leaves 6:26 p.m. · 14 h 10 min of travel, both ways together
out 1 stop, back 1 stop
found yesterday
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$346 12 Dec – 19 Decfound yesterdaySee prices for these dates
It is also the cheapest return we hold, of any age.
What have prices looked like?
Over 7 days, 24 Sept to 18 Oct, the cheapest return we saw each day was $346 to $436.
At $346, the cheapest return found recently is at the low end of that range.
7 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 3 departure dates from 12 Dec to 16 Dec, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
No. We hold 7-night return fares on 1 other departure date within 3 days of 12 Dec, and it is not cheaper.
Every date we hold
4 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 12 Dec – 19 Dec | $346 | American Airlines | Buffalo Niagara International Airport (BUF) → Luis Munoz Marin International Airport (SJU) | out 1 stop, back 1 stop | found yesterday | See prices for these dates |
| 15 Dec – 22 Dec | $392 | American Airlines | Buffalo Niagara International Airport (BUF) → Luis Munoz Marin International Airport (SJU) | out 1 stop, back 1 stop | found 3 days ago | See prices for these dates |
| 16 Dec – 23 Dec | $387 | Frontier Airlines | Buffalo Niagara International Airport (BUF) → Luis Munoz Marin International Airport (SJU) | out 2 stops, back 1 stop | found 3 days ago | See prices for these dates |
Airlines on the cheapest dates: American Airlines, Frontier Airlines.
Premium cabin fares from Buffalo to San Juan
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 12 Dec – 19 Dec in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Buffalo to San Juan?
Return
Not enough history yet: in 7 days of return prices, 24 Sept to 18 Oct, fewer than 3 booking ranges had prices on 7 days or more.
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Toronto → San Juan
95 km from Buffalo
C$457 (US$323)
C$33 (US$23) less than flying from Buffalo
25 Jan 2027 – 5 Feb 2027 · YYZ → SJU · out 1 stop, back 1 stop
found today
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
Niagara Falls → San Juan
24 km from Buffalo
$354
11 Nov · IAG → SJU · 3 stops
found 5 days ago
Cheapest recent price on each route — one way, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest return found recently is for 12 Dec – 19 Dec. A live search on this page shows what those dates cost now, for one adult in economy.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work