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$113+ 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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — BUF
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheapflights Tip: The best prices from San Juan to Buffalo are usually found in September or February, 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 September 17, 2025.

Round-trip from

$225
(Delta)

One-way from

$113
(Delta)

Popular in

December

Cheapest in

September

Average price

$255
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 ($8 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 17, 2025.

This Delta deal was found by Cheapflights users on 9/15. 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.
Thu 10/237:15 amSJU - BUF
1 stop11h 10mDelta
Mon 10/273:57 pmBUF - SJU
1 stop7h 59mDelta
Deal found 9/15$225
This American Airlines deal was found by Cheapflights users on 9/15. 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 10/245:30 amSJU - BUF
1 stop15h 17mAmerican Airlines
Sun 10/268:00 amBUF - SJU
1 stop15h 59mAmerican Airlines
Deal found 9/15$235
This American Airlines deal was found by Cheapflights users on 9/17. 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.
Thu 11/134:44 pmSJU - BUF
1 stop8h 24mAmerican Airlines
Tue 11/185:20 amBUF - SJU
2 stops10h 45mAmerican Airlines
Deal found 9/17$239
This Delta deal was found by Cheapflights users on 9/16. 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.
Thu 11/133:20 pmSJU - BUF
1 stop8h 37mDelta
Tue 11/187:00 amBUF - SJU
1 stop9h 20mDelta
Deal found 9/16$240
This Frontier deal was found by Cheapflights users on 9/15. 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.
Thu 10/239:06 pmSJU - BUF
2 stops19h 23mFrontier
Mon 10/279:13 pmBUF - SJU
2 stops20h 41mFrontier
Deal found 9/15$248
This American Airlines deal was found by Cheapflights users on 9/15. 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 10/245:30 amSJU - BUF
1 stop17h 23mAmerican Airlines
Sat 11/110:45 amBUF - SJU
2 stops13h 10mAmerican Airlines
Deal found 9/15$258
This Southwest deal was found by Cheapflights users on 9/17. 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 10/175:30 pmSJU - BUF
1 stop6h 20mSouthwest
Fri 10/244:15 pmBUF - SJU
1 stop8h 30mSouthwest
Deal found 9/17$261
This Priceline deal was found by Cheapflights users on 9/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/259:07 amSJU - BUF
1 stop8h 20mFrontier
Mon 9/296:59 pmBUF - SJU
1 stop25h 32mFrontier
Deal found 9/15$264
This Mytrip deal was found by Cheapflights users on 9/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/243:39 amSJU - BUF
1 stop13h 48mFrontier
Sat 9/277:11 pmBUF - SJU
1 stop12h 51mFrontier
Deal found 9/16$274
This Mytrip deal was found by Cheapflights users on 9/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/163:40 amSJU - BUF
1 stop16h 38mFrontier
Fri 10/249:13 pmBUF - SJU
1 stop29h 17mFrontier
Deal found 9/17$276

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 September 17, 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

Thu 10/23

7:15 am-3:28 pm

1 stop8h 13m

Buffalo

Tue 10/28

3:57 pm-11:56 pm

1 stop7h 59m

$225

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Fri 10/24

5:30 am-10:53 pm

1 stop17h 23m

Buffalo

Sun 11/2

5:00 am-10:52 pm

1 stop16h 52m

$235

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Fri 10/24

5:30 am-6:18 pm

1 stop12h 48m

Buffalo

Tue 10/28

10:35 am-10:10 pm

2 stops11h 35m

$235

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Thu 11/13

3:20 pm-10:57 pm

1 stop8h 37m

Buffalo

Tue 11/18

7:00 am-5:20 pm

1 stop9h 20m

$240

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Tue 10/7

7:00 am-3:10 pm

1 stop8h 10m

Buffalo

Tue 10/14

3:57 pm-11:56 pm

1 stop7h 59m

$240

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Fri 10/24

5:30 pm-11:50 pm

1 stop6h 20m

Buffalo

Sat 11/1

3:50 pm-11:45 pm

1 stop7h 55m

$261

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Tue 10/28

6:10 am-12:30 pm

1 stop6h 20m

Buffalo

Tue 10/28

4:15 pm-10:45 pm

1 stop6h 30m

$276

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Tue 11/25

2:00 am-8:48 am

1 stop7h 48m

Buffalo

Mon 12/1

2:08 pm-1:15 am

1 stop10h 07m

$290

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Fri 12/5

5:15 am-11:33 am

1 stop7h 18m

Buffalo

Wed 12/10

6:45 am-6:13 pm

1 stop10h 28m

$290

San JuanBuffalo

SJU - BUF

SJUBUF

San Juan Luis Munoz Marin Intl

Mon 11/17

6:27 am-3:39 pm

1 stop10h 12m

Buffalo

Mon 11/17

7:28 pm-3:48 am

1 stop7h 20m

$303

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 19 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 September 12, 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 September 17, 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 September 17, 2025.
Read through reviews of airlines operating flights from San Juan to Buffalo, such as Southwest, Delta, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,961 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
JetBlue
7.2
Good
2,914 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,173 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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.

  • How long is the flight from San Juan to Buffalo?

    For as low as $225, Delta can have you in Buffalo from San Juan in 8h 13m. There are 1848 mi between San Juan and Buffalo. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Delta, at $102, was found to be the cheapest airline from San Juan to Buffalo.Alternate airlines to your destination round-trip include Frontier and American Airlines. Delta is currently priced 71% below the average price you’ll pay for this route.

  • 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
Lockport
Orchard Park
Batavia
Williamsville
Eden
Amherst
West Seneca

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Alternative routes for San Juan to Buffalo

See prices for flight routes from nearby airports that may be better suited for you.
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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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$102Average$314FlexibilityNo cancel feeOn-timeN/A
FrontierCheapest$129Average$172FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$215Average$352FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$261Average$442FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$264Average$432FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$370Average$488FlexibilityNo cancel feeOn-time69%

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