$138 Cheap Flights from Buffalo (BUF) to San José (SJO)

View $138 flight on Tue, Oct 28, 2025Opens in a new window

Popular airlines from Buffalo Niagara Intl. Airport (BUF) to Juan Santamaria Intl. Airport (SJO)

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Cheap Flights from Buffalo to San José (BUF-SJO)

Prices were available within the past 7 days and start at $138 for one-way flights and $301 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Tue, Oct 28 - Tue, Nov 4
BUF
Buffalo
SJO
San José
$301 Roundtrip, found 5 days ago
$301
Roundtrip
found 5 days ago
Select Southwest Airlines flight, departing Tue, Oct 28 from Buffalo to San José, returning Tue, Nov 4, priced at $301 found 5 days ago
Southwest Airlines
Tue, Oct 28 - Tue, Nov 4
BUF
Buffalo
SJO
San José
$309 Roundtrip, found 5 days ago
$309
Roundtrip
found 5 days ago
Select Southwest Airlines flight, departing Tue, Oct 28 from Buffalo to San José, returning Tue, Nov 4, priced at $309 found 5 days ago
JetBlue Airways
Tue, Nov 11 - Sun, Nov 16
BUF
Buffalo
SJO
San José
$321 Roundtrip, found 20 hours ago
$321
Roundtrip
found 20 hours ago
Select JetBlue Airways flight, departing Tue, Nov 11 from Buffalo to San José, returning Sun, Nov 16, priced at $321 found 20 hours ago
Southwest Airlines
Tue, Oct 28 - Tue, Nov 4
BUF
Buffalo
SJO
San José
$322 Roundtrip, found 5 days ago
$322
Roundtrip
found 5 days ago
Select Southwest Airlines flight, departing Tue, Oct 28 from Buffalo to San José, returning Tue, Nov 4, priced at $322 found 5 days ago
Delta
Sun, Nov 23 - Thu, Dec 4
BUF
Buffalo
SJO
San José
$324 Roundtrip, found 2 days ago
$324
Roundtrip
found 2 days ago
Select Delta flight, departing Sun, Nov 23 from Buffalo to San José, returning Thu, Dec 4, priced at $324 found 2 days ago
American Airlines
Mon, Jan 5 - Fri, Jan 9
BUF
Buffalo
SJO
San José
$324 Roundtrip, found 3 days ago
$324
Roundtrip
found 3 days ago
Select American Airlines flight, departing Mon, Jan 5 from Buffalo to San José, returning Fri, Jan 9, priced at $324 found 3 days ago
American Airlines
Tue, Jan 13 - Wed, Jan 28
BUF
Buffalo
SJO
San José
$325 Roundtrip, found 2 days ago
$325
Roundtrip
found 2 days ago
Select American Airlines flight, departing Tue, Jan 13 from Buffalo to San José, returning Wed, Jan 28, priced at $325 found 2 days ago
American Airlines
Tue, Jan 13 - Wed, Jan 28
BUF
Buffalo
SJO
San José
$326 Roundtrip, found 2 days ago
$326
Roundtrip
found 2 days ago
Select American Airlines flight, departing Tue, Jan 13 from Buffalo to San José, returning Wed, Jan 28, priced at $326 found 2 days ago
American Airlines
Wed, Nov 5 - Wed, Nov 12
BUF
Buffalo
SJO
San José
$327 Roundtrip, found 1 day ago
$327
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Nov 5 from Buffalo to San José, returning Wed, Nov 12, priced at $327 found 1 day ago
United
Wed, Mar 11 - Wed, Mar 18
BUF
Buffalo
SJO
San José
$338 Roundtrip, found 1 day ago
$338
Roundtrip
found 1 day ago
Select United flight, departing Wed, Mar 11 from Buffalo to San José, returning Wed, Mar 18, priced at $338 found 1 day ago

Find the cheapest month to fly from Buffalo (BUF) to San José (SJO)

October is typically the cheapest month to fly

From $286 - $566 per traveler.

Graph displaying average flight prices per month

Flights from Buffalo (BUF) to San José (SJO)
Origin airport
Buffalo Niagara Intl.
Destination airport
Juan Santamaría Intl.
Airlines serving
Air Canada, American Airlines, Copa, Delta, JetBlue Airways, Southwest Airlines, United, avianca
Roundtrip price
$300
Distance
2299 mi

Buffalo to San José Flights

The cheapest times to fly from Buffalo to San José

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Buffalo to San José are during the month of October. You can find some of the cheapest flights from Buffalo to San José with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Buffalo to San José

Sunday is one of the best days to book for cheap flights from Buffalo to San José: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Buffalo to San José

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Buffalo to San José in 2025. You can also book with separate airlines for your outbound and return journeys, from $138 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Buffalo to San José flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Buffalo to San José airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Buffalo Niagara Intl. Airport (BUF) to Juan Santamaria Intl. Airport (SJO) cost?
Get a cheap one-way flight from $138 or cheap return flight from $301 from Buffalo Niagara Intl. Airport (BUF) to Juan Santamaria Intl. Airport (SJO) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Buffalo Niagara Intl. Airport (BUF) to Juan Santamaria Intl. Airport (SJO)?
October is the least expensive month to fly from BUF to SJO. Traveling during quieter months is often the key to better flight prices.
What is the cheapest airline that flies from Buffalo Niagara Intl. Airport (BUF) to Juan Santamaria Intl. Airport (SJO)?
To find the cheapest airline flying from BUF to SJO, use Expedia's filter tool. Tailor your search based on your travel needs, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Buffalo Niagara Intl. Airport (BUF) to Juan Santamaria Intl. Airport (SJO)?
There aren't any daily nonstop flights departing from Buffalo Niagara Intl. Airport (BUF) to Juan Santamaria Intl. Airport (SJO). But you can opt for flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be cruising above the clouds in no time.
What day of the week has the most flights from BUF to SJO?
Usually you'll have the most choice when it comes to flights on a Friday. Tuesdays are often the quietest.* However, this can change based on the season, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Buffalo Niagara Intl. Airport (BUF) to Juan Santamaria Intl. Airport (SJO)?
To avoid possible delays on the Buffalo Niagara Intl. Airport (BUF) to Juan Santamaria Intl. Airport (SJO) route, fly before 3 PM. Departures after this time have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Buffalo Niagara Intl. Airport (BUF) to Juan Santamaria Intl. Airport (SJO) last-minute?
Last-minute fares from BUF to SJO are typically more expensive. To lock in the best rates, start searching for flights as early as possible. That being said, if you're flexible with your travel plans, you may score a cheap fare just before your departure.
Is it cheaper to book a BUF to SJO flight and hotel package?
You can save money by booking a BUF to SJO flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one place. After selecting your preferred accommodations and flights, you can add extras such as activities, car rentals and tours.
Can I cancel or change the date of my flight from Buffalo Niagara Intl. Airport (BUF) to Juan Santamaria Intl. Airport (SJO)?
In most instances, you're able to reschedule or cancel your BUF to SJO flight. However, there may be additional charges, especially if your booking was made over 24 hours ago. Double-check your itinerary for the airline's guidelines and fees on flight changes, or if you need more details, visit our Customer Service portal.

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*Available to One Key members.