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$118+ Cheap flights from San Juan to Buffalo (BUF)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/13. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — BUF
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheapflights Tip: The best prices from San Juan to Buffalo are usually found in September or October, booked 50 days in advance, depart on a Thursday or Tuesday and return on a Tuesday

Cheap flight deals from San Juan to Buffalo

Discover tips and strategies to find the most affordable flight options for your journey from San Juan (PR1) to Buffalo (BUF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 31, 2025.

Round-trip from

$205
(Delta)

One-way from

$118
(Expedia)

Popular in

December

Cheapest in

September

Average price

$428
From San Juan to Buffalo
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One-way flight from San Juan to Buffalo
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Highest demand for flights based on searches. 9% potential increase in price ($37 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from San Juan to Buffalo

Cheapest flights from San Juan to Buffalo
Explore the most affordable flight options available from San Juan to Buffalo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

This Delta deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/197:30 amSJU - BUF
1 stop8h 03mDelta
Mon 9/227:00 amBUF - SJU
1 stop9h 20mDelta
Deal found 7/29$205
This American Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/105:30 amSJU - BUF
1 stop12h 48mAmerican Airlines
Wed 10/158:00 amBUF - SJU
1 stop15h 59mAmerican Airlines
Deal found 7/30$219
This Frontier deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/99:30 pmSJU - BUF
1 stop11h 22mFrontier
Sat 8/169:37 pmBUF - SJU
1 stop11h 27mFrontier
Deal found 7/29$238
This Southwest deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/194:05 pmSJU - BUF
1 stop7h 00mSouthwest
Mon 9/225:50 amBUF - SJU
2 stops9h 20mSouthwest
Deal found 7/31$261
This United Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/281:05 amSJU - BUF
2 stops8h 40mUnited Airlines
Mon 9/15:23 pmBUF - SJU
1 stop6h 34mUnited Airlines
Deal found 7/30$295
This Trip.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/58:25 amSJU - BUF
1 stop9h 19mJetBlue
Tue 8/269:45 amBUF - SJU
1 stop10h 19mJetBlue
Deal found 7/29$304

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Juan to Buffalo that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 31, 2025.
Use the filters below to find and compare flights from San Juan to Buffalo that are best for you.

Fly from

San Juan

Fly to

Buffalo

Route

Depart

Return

Price

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Fri 9/19

7:30 am-3:33 pm

1 stop8h 03m

Buffalo

Mon 9/22

7:00 am-4:20 pm

1 stop9h 20m

$205

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Fri 10/10

5:30 am-6:18 pm

1 stop12h 48m

Buffalo

Wed 10/15

8:00 am-11:59 pm

1 stop15h 59m

$219

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Sat 8/16

9:30 pm-8:52 am

1 stop11h 22m

Buffalo

Sat 8/23

7:05 pm-2:50 am

1 stop7h 45m

$238

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Fri 9/19

4:05 pm-11:05 pm

1 stop7h 00m

Buffalo

Mon 9/22

5:50 am-3:10 pm

2 stops9h 20m

$261

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Fri 10/24

1:05 am-4:53 pm

2 stops15h 48m

Buffalo

Sat 11/1

10:50 am-8:00 pm

1 stop9h 10m

$286

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Sat 10/25

2:05 pm-10:00 pm

1 stop7h 55m

Buffalo

Sat 11/1

7:02 pm-2:49 am

1 stop7h 47m

$323

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Wed 8/13

8:50 am-6:10 pm

1 stop9h 20m

$118

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Sat 8/9

9:30 pm-8:52 am

1 stop11h 22m

$119

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Sun 9/21

7:00 am-3:08 pm

1 stop8h 08m

$123

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Wed 11/5

6:00 am-4:53 pm

2 stops11h 53m

$138

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 13 results
1
2

Best time to book a flight from San Juan to Buffalo

Have a flexible travel schedule? Discover the best time to fly to Buffalo from San Juan with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from San Juan to Buffalo

How far ahead should I book a flight from San Juan to Buffalo?

Use this chart to determine the optimal time to book a round-trip flight from San Juan to Buffalo. Price data was last updated on July 25, 2025.

Booking 50 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Juan to Buffalo. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from San Juan to Buffalo?

Currently, January is the cheapest month in which you can book a flight from San Juan to Buffalo (average of $256). Flying from San Juan to Buffalo in December is currently the most expensive (average of $337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SJU to BUF?

Find hourly flight availability from San Juan to Buffalo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 31, 2025.

When flying from San Juan to Buffalo, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 22% versus a flight in the afternoon.

What is the cheapest day to fly from San Juan to Buffalo?

Use this chart to determine the cheapest time to fly round-trip from San Juan to Buffalo. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their San Juan to Buffalo flight should consider departing on Wednesday at noon when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Buffalo

Get insights into the airlines that provide service to Buffalo. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Buffalo. Reviews last updated July 31, 2025.
Read through reviews of airlines operating flights from San Juan to Buffalo, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Food

7.0

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,244 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Food

7.0

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Delta
8.0
Very good
7,980 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Food

7.0

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
United Airlines
7.4
Good
8,902 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Food

7.0

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
JetBlue
7.3
Good
2,913 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Food

7.0

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Food

7.0

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

Related info for your journey

Find useful and relevant information for your journey from San Juan to Buffalo. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Buffalo from San Juan?

    Most people fly into Buffalo (BUF) if they book a flight to Buffalo from San Juan. On average, Buffalo has 0 inbound flights from San Juan per day from 6 airlines. Buffalo is conveniently located just 8.3 mi from Buffalo’s city center.

  • What are the cheapest airlines flying from San Juan to Buffalo round-trip?

    Delta, at $205, was found to be the cheapest airline from San Juan to Buffalo.Alternate airlines to your destination round-trip include American Airlines and Frontier. Delta is currently priced 42% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from San Juan to Buffalo one-way?

    $118 is the cheapest one-way deal found within the past few days, from JetBlue. You may also be able to find cheap deals on Frontier and Delta, with prices starting from $119 and $123, respectively.

  • Can I find deals for flights from San Juan to Buffalo that include hotel bookings?

    Yes. In addition to deals on San Juan to Buffalo flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Juan to Buffalo?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Juan to Buffalo.

  • Can I find deals for business class flights from San Juan to Buffalo?

    Yes. Cheapflights offers flight deals from San Juan to Buffalo by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Juan to Buffalo?

    Currently, January is the cheapest month in which you can book a flight from San Juan to Buffalo (average of $256). Flying from San Juan to Buffalo in December is currently the most expensive (average of $337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Buffalo?

Book flights to Buffalo if you plan to visit one of these locations
Orchard Park
Batavia
Williamsville
Eden
Amherst
West Seneca

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Top 6 airlines flying from San Juan to Buffalo

Discover the top 6 airlines that operate flights from San Juan to Buffalo. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$130Average$311FlexibilityNo cancel feeOn-timeN/A
FrontierCheapest$159Average$178FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$248Average$290FlexibilityNo cancel feeOn-time71%
JetBlueCheapest$248Average$400FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$261Average$466FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$370Average$494FlexibilityNo cancel feeOn-time69%

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