San Juan

$116+ Cheap flights from Buffalo (BUF) to San Juan

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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SJU
Jan 17 — Jan 241
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Cheapflights Tip: The best prices from Buffalo to San Juan are usually found in September or May, booked 72 days in advance, depart on a Tuesday or Monday and return on a Thursday

Cheap flight deals from Buffalo to San Juan

Cheapest flights from Buffalo to San Juan
Explore the most affordable flight options available from Buffalo to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This Priceline deal was found by Cheapflights users on 12/16. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/199:42 amBUF - SJU
1 stop16h 08mFrontier
Tue 12/236:00 amSJU - BUF
1 stop7h 52mFrontier
Deal found 12/16$284
This Orbitz deal was found by Cheapflights users on 12/16. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/307:58 pmBUF - SJU
1 stop12h 00mFrontier
Wed 1/77:18 pmSJU - BUF
1 stop13h 55mFrontier
Deal found 12/16$302
This United Airlines deal was found by Cheapflights users on 12/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/167:00 amBUF - SJU
2 stops13h 26mUnited Airlines
Wed 12/247:45 amSJU - BUF
2 stops16h 48mUnited Airlines
Deal found 12/16$307
This Priceline deal was found by Cheapflights users on 12/17. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2210:43 amBUF - SJU
1 stop21h 40mFrontier
Mon 12/295:22 pmSJU - BUF
1 stop25h 15mFrontier
Deal found 12/17$323
This CheapOair deal was found by Cheapflights users on 12/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2411:08 amBUF - SJU
1 stop21h 15mFrontier
Thu 1/16:00 amSJU - BUF
1 stop8h 12mFrontier
Deal found 12/16$325
This CheapOair deal was found by Cheapflights users on 12/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2210:43 amBUF - SJU
1 stop21h 40mFrontier
Thu 1/16:00 amSJU - BUF
1 stop8h 12mFrontier
Deal found 12/16$326
This Priceline deal was found by Cheapflights users on 12/16. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1811:32 amBUF - SJU
1 stop9h 37mMultiple Airlines
Wed 12/2410:33 amSJU - BUF
1 stop11h 07mMultiple Airlines
Deal found 12/16$328
This Priceline deal was found by Cheapflights users on 12/17. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/238:50 amBUF - SJU
1 stop9h 35mMultiple Airlines
Mon 12/296:00 amSJU - BUF
1 stop16h 08mMultiple Airlines
Deal found 12/17$340
This Priceline deal was found by Cheapflights users on 12/16. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/209:28 amBUF - SJU
1 stop22h 30mFrontier
Mon 12/226:00 amSJU - BUF
1 stop16h 08mFrontier
Deal found 12/16$353

Find flight deals from Buffalo to San Juan

Discover tips and strategies to find the most affordable flight options for your journey from Buffalo (BUF) to San Juan (PR1). 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 December 18, 2025.

Round-trip from

$228
(JetBlue)

One-way from

$116
(American Airlines)

Popular in

December

Cheapest in

September

Average price

$540
From Buffalo to San Juan
One-way flight from Buffalo to San Juan
Highest demand for flights based on searches. 7% potential increase in price ($30 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).
Average for round-trip flights in December 2025

Cheapflights Fare Finder

 
Customize your flight search to find flights from Buffalo to San Juan 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 December 18, 2025.
Use the filters below to find and compare flights from Buffalo to San Juan that are best for you.

Fly from

Buffalo

Fly to

San Juan

Route

Depart

Return

Price

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sat 4/4

6:00 am-1:15 pm

1 stop7h 15m

San Juan Luis Munoz Marin Intl

Fri 4/10

6:20 pm-10:45 pm

Nonstop4h 25m

$228

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sat 1/24

11:24 am-10:22 pm

2 stops9h 58m

San Juan Luis Munoz Marin Intl

Fri 1/30

2:05 am-1:24 pm

2 stops12h 19m

$229

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Tue 2/24

6:46 am-8:36 pm

2 stops12h 50m

San Juan Luis Munoz Marin Intl

Wed 3/4

1:58 pm-10:37 pm

2 stops9h 39m

$231

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Fri 1/23

3:25 pm-11:48 pm

1 stop7h 23m

San Juan Luis Munoz Marin Intl

Thu 1/29

6:01 am-2:30 pm

1 stop9h 29m

$240

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Wed 3/18

3:56 pm-10:18 pm

1 stop6h 22m

San Juan Luis Munoz Marin Intl

Mon 3/23

6:15 am-3:59 pm

1 stop9h 44m

$243

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Mon 3/2

12:14 pm-11:58 pm

1 stop10h 44m

San Juan Luis Munoz Marin Intl

Wed 3/4

7:00 am-2:56 pm

1 stop8h 56m

$244

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Mon 3/2

7:30 pm-3:50 am

1 stop7h 20m

San Juan Luis Munoz Marin Intl

Tue 3/10

10:59 pm-9:27 am

1 stop10h 28m

$247

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Mon 3/2

7:30 pm-3:50 am

1 stop7h 20m

San Juan Luis Munoz Marin Intl

Wed 3/4

11:59 pm-9:28 am

1 stop10h 29m

$247

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sat 2/7

12:29 pm-11:59 pm

1 stop10h 30m

San Juan Luis Munoz Marin Intl

Sun 2/15

3:53 am-10:07 am

1 stop7h 14m

$249

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Mon 3/2

7:30 pm-3:50 am

1 stop7h 20m

San Juan Luis Munoz Marin Intl

Thu 3/12

5:10 am-12:34 pm

1 stop7h 24m

$253

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 21 results
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Best time to book a flight from Buffalo to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan from Buffalo 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 Buffalo to San Juan

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

Use this chart to determine the optimal time to book a round-trip flight from Buffalo to San Juan. Price data was last updated on December 12, 2025.

To ensure you get the cheapest price possible for a flight from Buffalo to San Juan, you should look to book at least 72 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, May is the cheapest month in which you can book a flight from Buffalo to San Juan (average of $141). Flying from Buffalo to San Juan in December is currently the most expensive (average of $261). 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 BUF to SJU?

Find hourly flight availability from Buffalo to San Juan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

A simple way to save on the total cost of your ticket is to fly from Buffalo to San Juan in the afternoon. If you’re flexible enough to do this you can expect to save up to 16% on your trip compared to booking a flight at noon.

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

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

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

Reviews of airlines servicing San Juan

Get insights into the airlines that provide service to San Juan. 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 San Juan. Reviews last updated December 18, 2025.
Get a feel of what it's like to fly with Southwest, Delta, and American Airlines from Buffalo to San Juan by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Overall

7.9

Crew

8.6

Comfort

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Overall

7.9

Crew

8.6

Comfort

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Overall

7.9

Crew

8.6

Comfort

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Overall

7.9

Crew

8.6

Comfort

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Overall

7.9

Crew

8.6

Comfort

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Overall

7.9

Crew

8.6

Comfort

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from Buffalo to San Juan. 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 from for flights from Buffalo to San Juan?

    Buffalo (BUF) is the airport you will fly out of if you book a flight from Buffalo to San Juan. You should not have trouble finding flights to San Juan from Buffalo; the airport handles an average of 0 outbound flights to San Juan per day. You should also have plenty of airline options to choose from since 6 airlines have flights from the Buffalo airport to San Juan. It is only a 8.3 mi journey to Buffalo (BUF) from Buffalo’s city center.

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

    For as low as $228, JetBlue can have you in San Juan from Buffalo in 7h 15m. The distance from Buffalo to San Juan is about 1848 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Frontier, at $129, was found to be the cheapest airline from Buffalo to San Juan.Alternate airlines to your destination round-trip include Delta and JetBlue. These flights start at 67% lower than the current average price 3 months from now.

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

    The cheapest airlines for a one-way flight from Buffalo to San Juan are Southwest ($102), Delta ($102), and American Airlines ($118).

  • Where are the most common layover locations when flying from Buffalo to San Juan?

  • What are some popular things to do or see while on a layover in New York?

    New York travelers tend to visit Times Square, New York City Center, and Madison Square Garden more than anywhere else. Travelers on a layover in New York can visit Times Square, New York City Center, and Madison Square Garden, by traveling 13.6 mi, 13.6 mi, and 13.6 mi, respectively after landing at New York John F Kennedy Intl. Travelers can book a car rental at New York John F Kennedy Intl for about $57 per day to make their sightseeing more efficient.

  • Where are the least popular layover locations for Buffalo to San Juan flights?

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Buffalo to San Juan 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 Buffalo to San Juan?

    Currently, May is the cheapest month in which you can book a flight from Buffalo to San Juan (average of $141). Flying from Buffalo to San Juan in December is currently the most expensive (average of $261). 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

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Alternative routes for Buffalo to San Juan

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from Buffalo to San Juan

Discover the top 6 airlines that operate flights from Buffalo to San Juan. 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$130Average$269FlexibilityNo cancel feeOn-time62%
DeltaCheapest$152Average$325FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$225Average$487FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$239Average$415FlexibilityNo cancel feeOn-time69%
JetBlueCheapest$245Average$407FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$264Average$428FlexibilityNo cancel feeOn-time71%

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