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 return flight from Buffalo Niagara to San Juan? Find the lowest prices on one-way and return 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 foundج.م.‏ 4,686
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 ج.م.‏ 9,360. 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 ج.م.‏ 9,360.
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, 18 April 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.

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

  • San Juan's timezone is UTC-4, which is the same as Buffalo (the location of Buffalo Niagara International Airport).

  • For hassle-free travel, arrive at the airport two hours ahead of international flights and an hour before domestic departures. That way, you can comfortably board your BUF to San Juan flight.

  • If you're heading away during a major holiday or another peak period, allow for even more time. A good general rule is two hours before domestic flights and up to four hours before international departures. Queues at check-in and security will be longer.

  • A stopover is the perfect opportunity to take a break from travelling and perhaps even visit a new city. When browsing for flight tickets from BUF to San Juan, deselect the 'Direct flights only' box to see where you can stop along the way. Here are some options to consider:

    • Hartsfield-Jackson Atlanta International Airport (ATL)

    • John F. Kennedy International Airport (JFK)

    • Baltimore/Wash International Thurgood Marshall Airport (BWI)

  • Located around 13 kilometres from central Buffalo, BUF can be reached in about 20 minutes by car. The journey on public transport takes roughly 1 hour 15 minutes.

  • Searching for a hotel near BUF? If you're boarding an early flight from Buffalo Niagara International Airport to San Juan, these stays will put you moments from your departure gate:

  • When it comes to Buffalo Niagara International Airport's on-time performance, data shows 75.46% of flights complete their journey on time.

  • The address for BUF is Genesee Street.

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

  • The lowest price we've seen for a one-way Buffalo Niagara International Airport to San Juan flight is ج.م.‏ 4,679. The cheapest price for a return flight is ج.م.‏ 9,374. Remember fares can change due to availability at the time of booking.

  • Don't leave things to the last moment. You're more likely to land cheap flights from BUF to San Juan if you book in advance. Airlines often offer some amazing early bird rates.

  • If you have flexibility with your trip dates, use the 'Whole month' tool. It'll show you the lowest price across every month when looking for a Buffalo Niagara International Airport to San Juan ticket.

  • Snapping up a cheap flight from BUF to San Juan is easy with Price Alerts. All you need to do is create one of these automatic notifications and we'll let you know as soon as a cheaper option becomes available.

  • Tailor your trip with filters. Select your ideal departure and arrival times, total journey duration and airlines. You can also sort results by 'Fastest,' 'Best' or 'Cheapest' flights from Buffalo Niagara International Airport to San Juan.

Airports in San Juan

Luis Munoz Marin International Airport (SJU)

  • The distance from Luis Munoz Marin International Airport (SJU) to central San Juan is roughly 8 kilometres. It'll take you about 10 minutes to get to the centre driving.

  • It'll take around 55 minutes to get there using public transport.

  • Look into staying at a hotel near SJU if you have a late flight from Buffalo Niagara International Airport to San Juan. Choose one of these accommodation options and make your first night all about catching up on rest:

  • Go wherever you want, whenever you want with a Luis Munoz Marin International Airport rental car. Pick up your wheels from Sixt, Ace Rent a Car or U-Save and discover more of San Juan and beyond.

  • To secure the lowest price, reserve your vehicle from Luis Munoz Marin International Airport around two weeks ahead of your flight from BUF to San Juan.

Fernando Luis Ribas Dominicci Airport (SIG)

  • Once your flight from Buffalo Niagara International Airport to San Juan has arrived, you can make your way to the city centre in about 15 minutes by car. Central San Juan is roughly 8 kilometres from Fernando Luis Ribas Dominicci Airport (SIG).

  • If you travel by public transport, the journey will take you 1 hour or so.

  • After stepping off your BUF to San Juan flight, kick back at a hotel close to SIG. These are some great accommodation options that'll help you switch to relaxation mode:

Best time to go to San Juan

  • Carefully consider your trip dates before booking your flight from Buffalo Niagara International Airport to San Juan. The city buzzes in high season, but hotel prices are often higher and attractions can get crowded. Go to San Juan in the off-season for a quieter vibe.

  • The warmest month in San Juan is September, with temperatures ranging between 23ºC and 33ºC. Lock in your Buffalo Niagara International Airport to San Juan flight ticket then if you enjoy this type of weather.

  • February has average temperatures of between 20ºC and 28ºC. Look for a cheap ticket from BUF to San Juan around that time if you want to travel in cooler conditions.

More about San Juan

  • Start your San Juan trip off on the right foot by choosing the ideal place to stay. As soon as you've booked your flight from Buffalo Niagara International Airport to San Juan, browse our selection of hotels including:

  • La Garita del morro de san juan bahia and Castillo San Felipe del Morro are just the start of the big attractions to put on your San Juan must-do list. Keep the adventure rolling by checking out Fortaleza Street.

Explore more of Puerto Rico

  • Aguadilla is just one of the many cities in Puerto Rico waiting to be discovered once you've seen the sights of San Juan. Around 113 kilometres away to the west, top sights here include El Parterre, Aguadilla Ice Skating Arena and Bandera de los Reyes Magos.

  • Isabela is another well-known destination in Puerto Rico and is around 105 kilometres west of San Juan. No trip is complete without dropping by Amarillo Mango, Urb. Llanos Piscina Park and Noches de Artesania.

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