C$130 Cheap Flights from Buffalo Niagara to San Juan

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Flight deals from Buffalo Niagara to San Juan

Looking for a cheap last-minute deal or the best round-trip flight from Buffalo Niagara to San Juan? Find the lowest prices on one-way and round-trip tickets right here.

Find the cheapest month to fly from Buffalo Niagara to San Juan

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Buffalo Niagara to San Juan flights are currently cheapest in April.

Direct flights from Buffalo Niagara to San Juan

Buffalo to San Juan: Flight information

The things to know before you go.
Cheapest flight foundC$130
Cheapest month to flyApril
Average flight time3 hrs, 58 mins
Most popular airlinejetBlue
Average flights per week5

Finding cheap flights from Buffalo Niagara to San Juan: Frequently asked questions

There are 6 airports in San Juan: San Juan Isla Grande, San Juan Luis Munoz Marin, Roosevelt Roads, Ponce, Vieques, and Culebra.
The best price we found for a return flight from Buffalo Niagara to San Juan is C$260. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
3 hours and 58 minutes is the average flight time from Buffalo Niagara to San Juan.
jetBlue flies direct from Buffalo Niagara to San Juan.
As of March 2026, there are 5 flights per week flying from Buffalo Niagara to San Juan.
The cheapest month to fly from Buffalo Niagara to San Juan is usually April.
If you're flying from Buffalo Niagara Airport, the cheapest airport near San Juan is San Juan Luis Munoz Marin – which is 11.3 km away from the centre of San Juan. We've found flights into this airport from C$260.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Buffalo Niagara Airport to San Juan on Saturday, April 18, 2026.
Yes – the average flight time is 3 hours and 58 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Juan but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Juan is around 40 days in advance, so don’t leave your flight to the last minute.
In March, the average temperature is usually around 25°C. August is typically the warmest month in San Juan, when it usually averages around 29°C. You can expect the least rain in February. The coldest month is January, with temperatures averaging 23°C. The rainiest month is September.
Currently, Southwest Airlines and jetBlue offer the cheapest flight tickets to San Juan.

Flying from Buffalo Niagara International Airport (BUF) to San Juan: what you need to know

  • San Juan and Buffalo (where Buffalo Niagara International Airport is located) share the UTC-4 timezone. That means you won't have to adjust your watch once you arrive.

  • To ensure you get on your flight from BUF to San Juan, leave plenty of time to navigate the airport and find your gate. Arriving two hours ahead of international departures and an hour before domestic flights is the general travel rule.

  • Peak months like August or vacation times such as summer and spring break will mean bigger waits at check-in and security. Travelling then? Play it safe and get to the terminal even earlier. Arriving two hours before a domestic flight and up four hours ahead of international flights is a wise move.

  • We make it a breeze to find a flight from BUF to San Juan that includes a stopover. To see all your options, deselect 'Direct flights only.' Next, select a flight offering a stop long enough to see the sights of the city of your choice. Some popular stopovers include:

    • Hartsfield-Jackson Atlanta International Airport (ATL)

    • Baltimore/Wash International Thurgood Marshall Airport (BWI)

    • John F. Kennedy International Airport (JFK)

  • You can enter Puerto Rico for tourism purposes without a visa if you hold a passport from United States. But before booking your flight tickets from Buffalo Niagara International Airport to San Juan, double-check for the newest rules and regulations. Visa rules can change, and you may need some documentation if your trip is for work or other reasons.

  • Located around 18 kilometres from central Buffalo, BUF can be reached in about 21 minutes by car, depending on traffic. The same journey on public transport takes roughly 1 hour and 15 minutes.

  • After a hassle-free start to your journey? Stay near BUF. Whether you're boarding an early flight from Buffalo Niagara International Airport to San Juan or just don't want to be rushed, these hotels are the answer:

How to find the cheapest flights from Buffalo Niagara International Airport (BUF) to San Juan

  • The lowest price we've found for a one-way ticket from Buffalo Niagara International Airport to San Juan is C$130. The cheapest price for a return flight is C$260. Remember fares can change due to availability at the time of booking.

  • Don't wait until the last moment. You're more likely to find cheap tickets from BUF to San Juan if you book ahead. Airlines often have some fantastic early bird deals.

  • If you're willing to be flexible with your travel dates, try using the 'Whole month' tool. It'll find the lowest price across every month when looking for a ticket from Buffalo Niagara International Airport to San Juan.

  • Set up a Price Alert for cheap tickets from BUF to San Juan. You don't need to check back in every day to see if fares have dropped. We'll let you know the moment there's a change in price.

  • Use the filters to tailor your flights from Buffalo Niagara International Airport to San Juan. Enter your preferred departure and arrival times, airlines and number of stops. Or sort your results by 'Cheapest' to get the best deals.

Airports in San Juan

Luis Munoz Marin International Airport (SJU)

Fernando Luis Ribas Dominicci Airport (SIG)

  • The centre of San Juan is located around 8 kilometres from Fernando Luis Ribas Dominicci Airport (SIG). Once your flight from Buffalo Niagara International Airport to San Juan has landed and you've made your way through the terminal, the drive should be around 14 minutes.

  • You can also travel by public transport, which typically takes 58 minutes.

  • Place the 'Do not disturb' sign on your door and rest at a hotel close to SIG. Here are a few options where you can tuck yourself in after your flight from BUF to San Juan:

Best time to go to San Juan

  • It's time to work out your dates for your flight from Buffalo Niagara International Airport to San Juan. July is the busiest month for a trip to San Juan. If you want a more peaceful vibe, go in May.

  • Book your flight from Buffalo Niagara International Airport to San Juan for September to experience the city during its warmest month. You can expect temperatures to range from 23ºC to 33ºC.

  • February has average temperatures of between 20ºC and 28ºC. Look for cheap flights from BUF to San Juan sometime then if you'd rather travel in cooler conditions.

More about San Juan

  • When it comes to searching for somewhere to rest your head, you'll find the top stays in San Juan right here. Check out these options after you've booked your flight from Buffalo Niagara International Airport to San Juan:

  • There are so many things to do and see in this city it can be hard to know where to begin. Castillo San Felipe del Morro, La Garita del morro de san juan bahia and Fortaleza Street are major attractions which should be on any well-planned San Juan itinerary.

Complete your San Juan trip with a car rental

  • We use the same magic that helped you find your cheap flight from Buffalo Niagara International Airport to San Juan to track down amazing deals on car rentals. Search for your ride in seconds and easily compare your options. Plus we give you all the info on car rentals in San Juan, from the most popular car type to the average daily price.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.