CA $181 Cheap Flights from Buffalo (BUF) to San Juan (SJU)

View CA $181 flight on Sat, Jun 6, 2026Opens in a new window

Popular airlines from Buffalo Niagara Intl. Airport (BUF) to Luis Munoz Marin Intl. Airport (SJU)

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Cheap flights from Buffalo (BUF) to San Juan (SJU)

Prices were available within the past 7 days and start at CA $181 for one-way flights and CA $375 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Sat, May 30 - Sat, Jun 6
BUF
Buffalo
SJU
San Juan
CA $375 Roundtrip, found 4 days ago
CA $375
Roundtrip
found 4 days ago
Select JetBlue Airways flight, departing Sat, May 30 from Buffalo to San Juan, returning Sat, Jun 6, priced at CA $375 found 4 days ago
JetBlue Airways
Mon, Jun 1 - Wed, Jun 17
BUF
Buffalo
SJU
San Juan
CA $381 Roundtrip, found 6 days ago
CA $381
Roundtrip
found 6 days ago
Select JetBlue Airways flight, departing Mon, Jun 1 from Buffalo to San Juan, returning Wed, Jun 17, priced at CA $381 found 6 days ago
JetBlue Airways
Sat, Jun 6 - Mon, Jun 15
BUF
Buffalo
SJU
San Juan
CA $383 Roundtrip, found 15 hours ago
CA $383
Roundtrip
found 15 hours ago
Select JetBlue Airways flight, departing Sat, Jun 6 from Buffalo to San Juan, returning Mon, Jun 15, priced at CA $383 found 15 hours ago
JetBlue Airways
Fri, Jun 5 - Thu, Jun 11
BUF
Buffalo
SJU
San Juan
CA $387 Roundtrip, found 6 days ago
CA $387
Roundtrip
found 6 days ago
Select JetBlue Airways flight, departing Fri, Jun 5 from Buffalo to San Juan, returning Thu, Jun 11, priced at CA $387 found 6 days ago
JetBlue Airways
Sat, May 30 - Sat, Jun 6
BUF
Buffalo
SJU
San Juan
CA $402 Roundtrip, found 4 days ago
CA $402
Roundtrip
found 4 days ago
Select JetBlue Airways flight, departing Sat, May 30 from Buffalo to San Juan, returning Sat, Jun 6, priced at CA $402 found 4 days ago
JetBlue Airways
Sat, May 30 - Sat, Jun 6
BUF
Buffalo
SJU
San Juan
CA $403 Roundtrip, found 4 days ago
CA $403
Roundtrip
found 4 days ago
Select JetBlue Airways flight, departing Sat, May 30 from Buffalo to San Juan, returning Sat, Jun 6, priced at CA $403 found 4 days ago
Delta
Wed, Nov 11 - Thu, Nov 12
BUF
Buffalo
SJU
San Juan
CA $406 Roundtrip, found 19 hours ago
CA $406
Roundtrip
found 19 hours ago
Select Delta flight, departing Wed, Nov 11 from Buffalo to San Juan, returning Thu, Nov 12, priced at CA $406 found 19 hours ago
American Airlines
Thu, Mar 11 - Sun, Mar 21
BUF
Buffalo
SJU
San Juan
CA $412 Roundtrip, found 6 days ago
CA $412
Roundtrip
found 6 days ago
Select American Airlines flight, departing Thu, Mar 11 from Buffalo to San Juan, returning Sun, Mar 21, priced at CA $412 found 6 days ago
Delta
Sun, Nov 1 - Wed, Nov 11
BUF
Buffalo
SJU
San Juan
CA $414 Roundtrip, found 14 hours ago
CA $414
Roundtrip
found 14 hours ago
Select Delta flight, departing Sun, Nov 1 from Buffalo to San Juan, returning Wed, Nov 11, priced at CA $414 found 14 hours ago
United
Tue, Sep 15 - Thu, Sep 17
BUF
Buffalo
SJU
San Juan
CA $535 Roundtrip, found 1 day ago
CA $535
Roundtrip
found 1 day ago
Select United flight, departing Tue, Sep 15 from Buffalo to San Juan, returning Thu, Sep 17, priced at CA $535 found 1 day ago

Alternative airports near San Juan

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Luis Munoz Marin Intl. SJU. Cheapest option available. Average driving time to city centre is 16 minutes. Flights from CA $858
SJU
Luis Munoz Marin Intl.
Cheapest
Average driving time to city centre16 min
Flights from CA $858

Find the cheapest month to fly from Buffalo (BUF) to San Juan (SJU)

April is typically the cheapest month to fly

From CA $267 - CA $526 per traveller.

Frequently asked questions

How much does a flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Juan (SJU-Luis Munoz Marin Intl.) cost?
One-way flights typically cost between $469 and $2,739 and return flights often range between $980 and $4,795. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Anaa (AAA) to Toronto, ON (YYZ-Pearson Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Juan (SJU-Luis Munoz Marin Intl.)?
October is typically the cheapest month to fly from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Juan (SJU-Luis Munoz Marin Intl.), with average round-trip fares around 854 CAD. This is about 20% lower than the average price throughout the year. October often sees lower prices as the peak summer travel season has ended, and the holiday rush hasn't yet begun, leading to reduced demand. Other cheap months to fly from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Juan (SJU-Luis Munoz Marin Intl.) include January and September.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Juan (SJU-Luis Munoz Marin Intl.)?
Enter BUF to SJU and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Juan (SJU-Luis Munoz Marin Intl.)?
To find a cheap flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Juan (SJU-Luis Munoz Marin Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Juan (SJU-Luis Munoz Marin Intl.)?
The best airline to fly with from Buffalo Niagara Intl. (BUF) to San Juan (SJU-Luis Munoz Marin Intl.) will differ from traveler to traveler. If you like to fly early, B6 offers early morning flights. If price is the most important factor, B6 typically offers the lowest fares. AA offers the most daily flights from Buffalo Niagara Intl. (BUF) to San Juan (SJU-Luis Munoz Marin Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Juan (SJU-Luis Munoz Marin Intl.)?
When planning your trip from Buffalo Niagara Intl. (BUF) to Luis Munoz Marin Intl. (SJU), you'll find the cheapest months to fly are typically September and October, with average round-trip flights around 854 CAD. However, the most popular months for travel are February and March, which means more flight options but potentially higher prices. Since there isn't an overlap between the cheapest and most popular months, you'll need to decide what's most important for your trip: saving money or having the widest selection of flights. This information is based on booking data from the past year.*Prices based on flights available on Expedia in the last year.
How many flights per day from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Juan (SJU-Luis Munoz Marin Intl.)?
There are approximately 57 connecting flights per day from Buffalo Niagara Intl. (BUF) to Luis Munoz Marin Intl. (SJU). Some common connection points include Baltimore Washington Intl. Thurgood Marshall (BWI), Logan Intl. (BOS), and Philadelphia Intl. (PHL).
What is the earliest flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Juan (SJU-Luis Munoz Marin Intl.)?
The earliest flight from Buffalo Niagara International Airport (BUF) to Luis Munoz Marin International Airport (SJU) typically departs at approximately 5:00 AM local time, operated by American Airlines. This is a seasonal service active in April and May. An early departure like this can help maximize your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Juan (SJU-Luis Munoz Marin Intl.)?
You'll typically find the most flights from Buffalo Niagara Intl. (BUF) to San Juan (SJU) on a Saturday, with around 39 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include American Airlines, Southwest Airlines, and United Airlines. Flight schedules are consistent throughout the week, so you'll have a good selection of flights no matter which day you choose.
What are the most popular departure times for flights from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Juan (SJU-Luis Munoz Marin Intl.)?
The most popular departure times for flights from Buffalo Niagara Intl. (BUF) to Luis Munoz Marin Intl. (SJU) are in the early morning, from 6am to 9am. About 46% of passengers prefer this time. Many major carriers, including United Airlines and JetBlue Airways, offer flights during this window. This timing works well because it allows you to start your travel day early and arrive at your destination with plenty of time to settle in.
How long does it take to fly from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Juan (SJU-Luis Munoz Marin Intl.)?
Direct flights from BUF to SJU usually take about 4 hours 30 minutes, traveling roughly 1,849 miles. If you opt for a connecting flight, expect to add around 3 hours 20 minutes to your journey. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Juan (SJU-Luis Munoz Marin Intl.)?
Select the "Business class" and "First class" filters when looking for BUF to SJU flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Juan (SJU-Luis Munoz Marin Intl.) flight with Expedia?
It's easy to earn miles on a Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Juan (SJU-Luis Munoz Marin Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for San Juan from Buffalo Niagara Intl. (BUF)?
From Buffalo Niagara Intl. (BUF), you can fly into Luis Munoz Marin Intl. (SJU) to reach San Juan. Some flights may connect through major hubs like O'Hare Intl. (ORD), Liberty Intl. (EWR), Ronald Reagan Washington National (DCA) before reaching San Juan. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Juan (SJU-Luis Munoz Marin Intl.) at the last minute?
Typically, booking a last minute flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Juan (SJU-Luis Munoz Marin Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Juan (SJU-Luis Munoz Marin Intl.) flight and hotel package?
Securing a Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Juan (SJU-Luis Munoz Marin Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Juan (SJU-Luis Munoz Marin Intl.)?
If you booked your Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Juan (SJU-Luis Munoz Marin Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Buffalo Niagara Intl.
Destination airport
Luis Munoz Marin Intl.
Airlines serving
American Airlines, Delta, JetBlue Airways, United
Roundtrip price
CA $374
Distance
2957 km
Average flight time
2 hours 54 mins

Book with confidence

Buffalo to San Juan Flights

The easy way to book your flights from Buffalo to San Juan 

With Expedia, it’s simple to find and book flights to San Juan from Buffalo whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Luis Munoz Marin Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Buffalo to San Juan today, tomorrow, or this week.  

 

Save dollars with cheap flights from Buffalo Niagara Intl., BUF to Luis Munoz Marin Intl., SJU 

Sort your search results by price to find great deals on your flight from Buffalo to San Juan—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to San Juan from Buffalo currently is just CA $375 rising to CA $535.  

Here are more money-saving tips: 

  • Fly in May when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to San Juan  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to San Juan from Buffalo 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to San Juan with Expedia today.

Buffalo to San Juan Flights

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*Available to Expedia members.