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$126+ 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 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SJU
jun. 23 — jun. 301
lun. 6/23
lun. 6/30
1 adult, Economy
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Cheapflights Tip: The best prices from Buffalo to San Juan are usually found in September or May, booked 42 days in advance, depart on a Tuesday or Monday and return on a Thursday

Cheap 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 junio 18, 2025.

Round-trip from

$203
(Priceline)

One-way from

$126
(Delta)

Popular in

December

Cheapest in

September

Average price

$452
From Buffalo to San Juan
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One-way flight from Buffalo to San Juan
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Highest demand for flights based on searches. 4% potential increase in price ($18 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find 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 junio 18, 2025.

This Priceline deal was found by Cheapflights users on 6/16. 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.
sáb. 7/59:37 pmBUF - SJU
1 stop11h 27mFrontier
sáb. 7/129:30 pmSJU - BUF
1 stop11h 22mFrontier
Deal found 6/16$203
This Delta deal was found by Cheapflights users on 6/16. 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.
mié. 10/112:09 pmBUF - SJU
1 stop9h 59mDelta
mié. 10/81:10 pmSJU - BUF
1 stop10h 40mDelta
Deal found 6/16$251
This Southwest deal was found by Cheapflights users on 6/15. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 7/195:25 pmBUF - SJU
1 stop6h 45mSouthwest
sáb. 7/261:25 pmSJU - BUF
1 stop9h 05mSouthwest
Deal found 6/15$290
This American Airlines deal was found by Cheapflights users on 6/18. 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.
mar. 9/27:35 amBUF - SJU
1 stop7h 25mAmerican Airlines
mié. 9/106:10 amSJU - BUF
2 stops17h 40mAmerican Airlines
Deal found 6/18$291
This JetBlue deal was found by Cheapflights users on 6/16. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/137:22 amBUF - SJU
1 stop8h 27mJetBlue
jue. 8/211:10 pmSJU - BUF
1 stop9h 19mJetBlue
Deal found 6/16$306
This United Airlines deal was found by Cheapflights users on 6/16. 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.
mié. 10/17:07 amBUF - SJU
1 stop7h 37mUnited Airlines
mar. 10/71:05 amSJU - BUF
2 stops8h 38mUnited Airlines
Deal found 6/16$341
This Mytrip deal was found by Cheapflights users on 6/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 7/311:23 amBUF - SJU
2 stops31h 56mMultiple Airlines
sáb. 7/121:37 amSJU - BUF
2 stops33h 13mMultiple Airlines
Deal found 6/15$473

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 junio 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

sáb. 7/5

9:37 pm-9:04 am

1 stop11h 27m

San Juan Luis Munoz Marin Intl

sáb. 7/12

9:30 pm-8:52 am

1 stop11h 22m

$203

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

mar. 9/2

6:10 am-5:25 pm

1 stop11h 15m

San Juan Luis Munoz Marin Intl

mié. 9/10

7:20 am-5:55 pm

1 stop10h 35m

$251

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

mié. 7/16

7:00 am-4:31 pm

1 stop9h 31m

San Juan Luis Munoz Marin Intl

mié. 7/23

7:00 am-3:12 pm

1 stop8h 12m

$283

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

mar. 9/2

7:35 am-3:00 pm

1 stop7h 25m

San Juan Luis Munoz Marin Intl

mié. 9/10

6:10 am-11:50 pm

2 stops17h 40m

$291

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

mié. 8/13

7:22 am-3:49 pm

1 stop8h 27m

San Juan Luis Munoz Marin Intl

jue. 8/21

1:10 pm-10:29 pm

1 stop9h 19m

$306

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

lun. 8/18

7:00 am-2:44 pm

1 stop7h 44m

San Juan Luis Munoz Marin Intl

mié. 9/3

1:05 am-9:45 am

2 stops8h 40m

$417

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

jue. 7/3

11:23 am-7:19 pm

2 stops31h 56m

San Juan Luis Munoz Marin Intl

sáb. 7/12

1:37 am-10:50 am

2 stops33h 13m

$473

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

mar. 8/26

7:00 am-4:27 pm

1 stop9h 27m

$126

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

dom. 8/10

9:12 pm-9:04 am

1 stop11h 52m

$127

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

mar. 8/12

10:04 am-10:49 pm

1 stop12h 45m

$129

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/15

Showing 1-10 of 14 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 June 13, 2025.

To ensure you get the cheapest price possible for a flight from Buffalo to San Juan, you should look to book at least 42 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, September is the cheapest month in which you can book a flight from Buffalo to San Juan (average of $254). Flying from Buffalo to San Juan in June is currently the most expensive (average of $339). 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 junio 18, 2025.

A simple way to save on the total cost of your ticket is to fly from Buffalo to San Juan in the evening. If you’re flexible enough to do this you can expect to save up to 31% 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 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.

Rainfall in San Juan by month

Plan your trip to San Juan by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Juan ranges from 2.2 - 6.1 inches per month. November is typically the wettest month, when rainfall can reach 6.1 in. February is typically the driest time to visit San Juan when rainfall is around 2.2 in.

Temperature in San Juan by month

Plan your trip to San Juan by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Juan, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 77.0 F).

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 junio 18, 2025.
Read through reviews of airlines operating flights from Buffalo to San Juan, such as Southwest, Delta and United Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,280 reviews

Crew

8.6

Entertainment

7.6

Comfort

8.0

Food

7.1

Overall

8.0

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Southwest
8.0
Very good
4,280 reviews
Southwest
8.0
Very good
4,280 reviews

Crew

8.6

Entertainment

7.6

Comfort

8.0

Food

7.1

Overall

8.0

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Delta
8.0
Very good
7,964 reviews
Southwest
8.0
Very good
4,280 reviews

Crew

8.6

Entertainment

7.6

Comfort

8.0

Food

7.1

Overall

8.0

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
United Airlines
7.4
Good
8,810 reviews
Southwest
8.0
Very good
4,280 reviews

Crew

8.6

Entertainment

7.6

Comfort

8.0

Food

7.1

Overall

8.0

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
JetBlue
7.3
Good
2,924 reviews
Southwest
8.0
Very good
4,280 reviews

Crew

8.6

Entertainment

7.6

Comfort

8.0

Food

7.1

Overall

8.0

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,280 reviews

Crew

8.6

Entertainment

7.6

Comfort

8.0

Food

7.1

Overall

8.0

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

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.

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

    Frontier, at $203, was found to be the cheapest airline from Buffalo to San Juan.Alternate airlines to your destination round-trip include Southwest and Delta. These flights start at 49% 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 Delta ($126), Frontier ($127), and American Airlines ($129).

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

    Most of the time, Buffalo to San Juan flights that have layovers will stop in New York.

  • 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 $71 per day to make their sightseeing more efficient.

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

    Buffalo to San Juan flights that have layovers will least frequently stop in Orlando.

  • 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, September is the cheapest month in which you can book a flight from Buffalo to San Juan (average of $254). Flying from Buffalo to San Juan in June is currently the most expensive (average of $339). 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.
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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 junio 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$129Average$282FlexibilityNo cancel feeOn-time62%
DeltaCheapest$167Average$334FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$255Average$504FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$288Average$466FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$290Average$463FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$334Average$526FlexibilityNo cancel feeOn-time63%

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