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 1/19. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SJU
Jan 22 — Jan 291
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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 Wednesday or Tuesday 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 23, 2025.

This JetBlue deal was found by Cheapflights users on 12/21. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/284:30 pmBUF - SJU
1 stop10h 19mJetBlue
Fri 1/25:24 pmSJU - BUF
1 stop7h 30mJetBlue
Deal found 12/21$244
This Priceline deal was found by Cheapflights users on 12/21. 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.
Wed 12/2411:08 amBUF - SJU
1 stop14h 42mFrontier
Sat 1/104:07 pmSJU - BUF
1 stop17h 06mFrontier
Deal found 12/21$252
This CheapOair deal was found by Cheapflights users on 12/21. 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.
Tue 12/234:30 pmBUF - SJU
1 stop9h 29mJetBlue
Sun 12/281:59 amSJU - BUF
1 stop9h 36mJetBlue
Deal found 12/21$323
This CheapOair deal was found by Cheapflights users on 12/22. 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.
Sun 12/286:32 pmBUF - SJU
1 stop27h 43mFrontier
Sat 1/109:23 pmSJU - BUF
1 stop11h 50mFrontier
Deal found 12/22$353
This Priceline deal was found by Cheapflights users on 12/21. 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 12/256:00 amBUF - SJU
1 stop8h 10mMultiple Airlines
Wed 12/317:30 amSJU - BUF
1 stop10h 19mMultiple Airlines
Deal found 12/21$356
This Priceline deal was found by Cheapflights users on 12/20. 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.
Wed 12/2411:08 amBUF - SJU
1 stop25h 26mFrontier
Sat 12/2710:28 amSJU - BUF
1 stop7h 36mFrontier
Deal found 12/20$359
This CheapOair deal was found by Cheapflights users on 12/22. 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 stop14h 42mFrontier
Thu 1/19:37 pmSJU - BUF
1 stop24h 03mFrontier
Deal found 12/22$365
This JetBlue deal was found by Cheapflights users on 12/21. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/226:10 amBUF - SJU
1 stop9h 16mJetBlue
Mon 12/292:21 pmSJU - BUF
1 stop10h 33mJetBlue
Deal found 12/21$366
This Delta deal was found by Cheapflights users on 12/22. 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.
Mon 12/223:50 pmBUF - SJU
1 stop9h 37mDelta
Mon 12/294:48 pmSJU - BUF
1 stop7h 40mDelta
Deal found 12/22$403
This United Airlines deal was found by Cheapflights users on 12/21. 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.
Wed 12/245:35 pmBUF - SJU
2 stops11h 36mUnited Airlines
Fri 1/92:05 amSJU - BUF
1 stop9h 44mUnited Airlines
Deal found 12/21$413
This Frontier deal was found by Cheapflights users on 12/21. 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.
Wed 12/2411:08 amBUF - SJU
1 stop8h 19mFrontier
Sat 12/273:55 amSJU - BUF
1 stop9h 41mFrontier
Deal found 12/21$414

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 23, 2025.

Round-trip from

$180
(Priceline)

One-way from

$116
(American Airlines)

Popular in

December

Cheapest in

September

Average price

$535
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 ($29 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($14 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 23, 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

Sun 2/8

7:00 am-4:50 pm

1 stop8h 50m

San Juan Luis Munoz Marin Intl

Sat 2/14

7:00 am-2:56 pm

1 stop8h 56m

$211

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

6:10 am-2:08 pm

1 stop8h 58m

$226

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Mon 5/25

12:25 pm-8:03 pm

1 stop7h 38m

San Juan Luis Munoz Marin Intl

Sat 5/30

3:30 am-11:10 am

1 stop7h 40m

$227

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Fri 1/9

3:25 pm-1:22 am

1 stop8h 57m

San Juan Luis Munoz Marin Intl

Wed 1/14

2:20 pm-11:47 pm

1 stop10h 27m

$232

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

$239

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Wed 2/4

11:00 am-10:22 pm

2 stops10h 22m

San Juan Luis Munoz Marin Intl

Mon 2/9

2:05 am-1:24 pm

2 stops12h 19m

$241

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Wed 1/21

11:51 am-11:57 pm

1 stop11h 06m

San Juan Luis Munoz Marin Intl

Tue 1/27

7:30 am-5:54 pm

1 stop11h 24m

$243

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sun 1/18

2:05 pm-11:45 pm

1 stop8h 40m

San Juan Luis Munoz Marin Intl

Tue 1/27

7:30 am-5:54 pm

1 stop11h 24m

$243

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Tue 3/31

12:07 pm-8:18 pm

1 stop8h 11m

San Juan Luis Munoz Marin Intl

Tue 4/7

6:15 am-3:51 pm

1 stop9h 36m

$243

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Fri 1/23

3:25 pm-11:48 pm

1 stop7h 23m

$120

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/22

Showing 1-10 of 19 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 19, 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, February is the cheapest month in which you can book a flight from Buffalo to San Juan (average of $138). Flying from Buffalo to San Juan in December is currently the most expensive (average of $269). 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 23, 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 24% on your trip compared to booking a flight in the morning.

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 Tuesday evenings 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.

How much does it cost to fly round-trip from Buffalo to San Juan?

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 23, 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.

Food

7.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Crew

8.6

Comfort

8.0

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

Food

7.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Crew

8.6

Comfort

8.0

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

Food

7.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Crew

8.6

Comfort

8.0

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

Food

7.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Crew

8.6

Comfort

8.0

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

Food

7.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Crew

8.6

Comfort

8.0

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

Food

7.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Crew

8.6

Comfort

8.0

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 $226, Delta can have you in San Juan from Buffalo in 7h 20m. 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).

  • What are the cheapest flights from Buffalo to San Juan?

    Looking at all options, your cheapest flight can be booked for $79. While the most popular route (Buffalo - San Juan Luis Munoz Marin Intl) can be booked for $180 on average, our data indicates $420 when flying from Buffalo to San Juan.

  • 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 $58 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, February is the cheapest month in which you can book a flight from Buffalo to San Juan (average of $138). Flying from Buffalo to San Juan in December is currently the most expensive (average of $269). 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 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$130Average$270FlexibilityNo cancel feeOn-time62%
DeltaCheapest$152Average$325FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$225Average$484FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$235Average$406FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$239Average$414FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$264Average$428FlexibilityNo cancel feeOn-time71%

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