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CA $146 Cheap Flights from Buffalo (BUF) to San Juan (SJU)

View CA $146 flight on Tue, Sep 1, 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 $146 for one-way flights and CA $292 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon, Feb 1 - Fri, Feb 5
BUF
Buffalo
SJU
San Juan
CA $292 Roundtrip, found 6 hours ago
CA $292
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Mon, Feb 1 from Buffalo to San Juan, returning Fri, Feb 5, priced at CA $292 found 6 hours ago
American Airlines
Sun, Nov 1 - Wed, Nov 11
BUF
Buffalo
SJU
San Juan
CA $293 Roundtrip, found 12 hours ago
CA $293
Roundtrip
found 12 hours ago
Select American Airlines flight, departing Sun, Nov 1 from Buffalo to San Juan, returning Wed, Nov 11, priced at CA $293 found 12 hours ago
American Airlines
Fri, Oct 23 - Fri, Oct 30
BUF
Buffalo
SJU
San Juan
CA $300 Roundtrip, found 10 hours ago
CA $300
Roundtrip
found 10 hours ago
Select American Airlines flight, departing Fri, Oct 23 from Buffalo to San Juan, returning Fri, Oct 30, priced at CA $300 found 10 hours ago
American Airlines
Mon, Aug 31 - Mon, Sep 7
BUF
Buffalo
SJU
San Juan
CA $341 Roundtrip, found 1 day ago
CA $341
Roundtrip
found 1 day ago
Select American Airlines flight, departing Mon, Aug 31 from Buffalo to San Juan, returning Mon, Sep 7, priced at CA $341 found 1 day ago
American Airlines
Sun, Nov 1 - Wed, Nov 11
BUF
Buffalo
SJU
San Juan
CA $341 Roundtrip, found 12 hours ago
CA $341
Roundtrip
found 12 hours ago
Select American Airlines flight, departing Sun, Nov 1 from Buffalo to San Juan, returning Wed, Nov 11, priced at CA $341 found 12 hours ago
American Airlines
Wed, Sep 2 - Mon, Sep 7
BUF
Buffalo
SJU
San Juan
CA $345 Roundtrip, found 6 hours ago
CA $345
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Wed, Sep 2 from Buffalo to San Juan, returning Mon, Sep 7, priced at CA $345 found 6 hours ago
JetBlue Airways
Fri, Oct 23 - Fri, Oct 30
BUF
Buffalo
SJU
San Juan
CA $352 Roundtrip, found 10 hours ago
CA $352
Roundtrip
found 10 hours ago
Select JetBlue Airways flight, departing Fri, Oct 23 from Buffalo to San Juan, returning Fri, Oct 30, priced at CA $352 found 10 hours ago
American Airlines
Mon, Feb 1 - Fri, Feb 5
BUF
Buffalo
SJU
San Juan
CA $355 Roundtrip, found 6 hours ago
CA $355
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Mon, Feb 1 from Buffalo to San Juan, returning Fri, Feb 5, priced at CA $355 found 6 hours ago
Delta
Mon, Feb 1 - Fri, Feb 5
BUF
Buffalo
SJU
San Juan
CA $358 Roundtrip, found 6 hours ago
CA $358
Roundtrip
found 6 hours ago
Select Delta flight, departing Mon, Feb 1 from Buffalo to San Juan, returning Fri, Feb 5, priced at CA $358 found 6 hours ago
United
Mon, Oct 19 - Fri, Oct 30
BUF
Buffalo
SJU
San Juan
CA $433 Roundtrip, found 6 days ago
CA $433
Roundtrip
found 6 days ago
Select United flight, departing Mon, Oct 19 from Buffalo to San Juan, returning Fri, Oct 30, priced at CA $433 found 6 days 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 $373
SJU
Luis Munoz Marin Intl.
Cheapest
Average driving time to city centre16 min
Flights from CA $373

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

October is typically the cheapest month to fly

From CA $306 - CA $512 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?
You can find cheap one-way flights from CA $146 and cheap return flights from CA $292 BUF to SJU with Expedia. One-way flights typically cost between CA$217 and CA$921, and return flights often range between CA$516 and CA$2384. 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 BUF to SJU ticket fares go up or down.
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 return fares around CA$488. October often sees lower prices because it falls outside of peak holiday and summer travel seasons, when demand tends to decrease. January and September are also good months to find deals on this route.
Which airlines fly direct from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Juan (SJU-Luis Munoz Marin Intl.)?
Only one airline offers direct flights from Buffalo Niagara Intl. (BUF) to San Juan (SJU-Luis Munoz Marin Intl.). JetBlue Airways operates 7 direct flights from Buffalo Niagara Intl. to San Juan every week.
What is the cheapest airline that flies from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Juan (SJU-Luis Munoz Marin Intl.)?
Frontier Airlines offers one of the cheapest connecting return flights for around CA$248. JetBlue Airways is one of the cheapest airlines offering nonstop return flights from Buffalo Niagara Intl. (BUF) to San Juan (SJU) for around CA$361 for flights that can be booked for departure within the next year. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.
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, NY (BUF-Buffalo Niagara Intl.) to San Juan (SJU-Luis Munoz Marin Intl.) will differ from traveler to traveler. If you like to fly early, JetBlue Airways offers early morning flights. If price is the most important factor, JetBlue Airways typically offers the lowest fares. American Airlines offers the most daily flights from Buffalo, NY (BUF-Buffalo Niagara Intl.) 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.)?
The cheapest months to fly from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Juan (SJU-Luis Munoz Marin Intl.) are typically October and September, with average return flights around CA$488. However, the most popular months for this route are March and February, meaning you'll find plenty of flight options during those times. If you're looking for the best balance of good prices and a wide selection of flights, you might consider travelling in the shoulder seasons around these popular and cheapest months.
How many flights per day from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Juan (SJU-Luis Munoz Marin Intl.)?
There are approximately 56 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 Intl. (BUF) to Luis Munoz Marin Intl. (SJU) typically departs around 5:00 AM. This service is offered by American Airlines. This is a seasonal service, active in April and May. An early departure like this can help you make the most of 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 find the most flights from Buffalo Niagara Intl. (BUF) to Luis Munoz Marin Intl. (SJU) on a Friday, with around 40 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include American Airlines, Southwest Airlines, and United. Fridays offer notably more flight options compared to other days of the week, so if flexibility is key, consider flying then.
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. Many major carriers, including JetBlue Airways, United and American Airlines, offer flights during this window. Many travellers prefer these times because it allows for an early start to their trip, getting you to 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.)?
When flying from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Juan (SJU-Luis Munoz Marin Intl.), you have a few options. A non-stop flight typically takes around 4 hours 30 minutes. If you opt for a one-stop flight, the journey usually extends to about 7 hours 48 minutes. For flights with two or more stops, you can expect a travel time of approximately 14 hours 30 minutes. The distance covered on this route is about 2,976 kilometers. Keep in mind that actual flight times can vary due to factors like wind patterns and air traffic, so it's always a good idea to factor in some extra time when planning your trip.
Can you fly business or first class from Buffalo, NY (BUF-Buffalo Niagara Intl.) to San Juan (SJU-Luis Munoz Marin Intl.)?
Yes, you can fly business or first class between Buffalo Niagara International Airport (BUF) and Luis Munoz Marin International Airport (SJU).You can fly business class with Frontier Airlines and Delta.First class cabins are available on United and Delta.
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 (SJU) from Buffalo, NY (BUF)?
If you're planning to travel to San Juan from Buffalo Niagara Intl. (BUF), you can fly directly into Luis Munoz Marin Intl. (SJU). Some flights may connect through major hubs like O'Hare Intl. (ORD), Liberty Intl. (EWR), or Baltimore Washington Intl. Thurgood Marshall (BWI) 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 $292
Distance
2957 km
Average flight time
3 hours 38 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 $292 rising to CA $588.  

Here are more money-saving tips: 

  • Fly in February 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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