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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 5/28. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SJU
May 4 — May 111
Sun 5/4
Sun 5/11
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 April 29, 2025.

Round-trip from

$251
(Delta)

One-way from

$126
(American Airlines)

Popular in

December

Cheapest in

September

Average price

$424
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. 6% potential increase in price ($27 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 29, 2025.

This Delta deal was found by Cheapflights users on 4/29. 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.
Wed 10/13:30 pmBUF - SJU
1 stop6h 38mDelta
Wed 10/87:00 amSJU - BUF
1 stop8h 16mDelta
Deal found 4/29$251
This American Airlines deal was found by Cheapflights users on 4/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/208:14 amBUF - SJU
2 stops11h 56mAmerican Airlines
Sat 9/273:55 pmSJU - BUF
1 stop8h 19mAmerican Airlines
Deal found 4/29$258
This Frontier deal was found by Cheapflights users on 4/29. 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 5/1011:38 amBUF - SJU
1 stop7h 52mFrontier
Sat 5/109:30 pmSJU - BUF
1 stop11h 31mFrontier
Deal found 4/29$293
This JetBlue deal was found by Cheapflights users on 4/29. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/203:55 pmBUF - SJU
1 stop7h 06mJetBlue
Fri 8/291:10 pmSJU - BUF
1 stop9h 19mJetBlue
Deal found 4/29$311
This Southwest deal was found by Cheapflights users on 4/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/186:55 amBUF - SJU
1 stop8h 15mSouthwest
Tue 9/231:35 pmSJU - BUF
1 stop6h 45mSouthwest
Deal found 4/29$329
This United Airlines deal was found by Cheapflights users on 4/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/110:50 amBUF - SJU
2 stops13h 07mUnited Airlines
Tue 10/71:05 amSJU - BUF
2 stops8h 41mUnited Airlines
Deal found 4/29$331
This Trip.com deal was found by Cheapflights users on 4/28. 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.
Thu 5/159:51 amBUF - SJU
2 stops25h 40mMultiple Airlines
Sun 5/189:30 pmSJU - BUF
1 stop11h 31mMultiple Airlines
Deal found 4/28$445

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 April 29, 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

Wed 10/1

3:30 pm-10:08 pm

1 stop6h 38m

San Juan Luis Munoz Marin Intl

Wed 10/8

7:00 am-3:16 pm

1 stop8h 16m

$251

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sat 9/20

8:14 am-8:10 pm

2 stops11h 56m

San Juan Luis Munoz Marin Intl

Sat 9/27

3:55 pm-12:14 am

1 stop8h 19m

$258

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sat 5/10

11:38 am-7:30 pm

1 stop7h 52m

San Juan Luis Munoz Marin Intl

Sat 5/10

9:30 pm-9:01 am

1 stop11h 31m

$293

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Wed 8/20

3:55 pm-11:01 pm

1 stop7h 06m

San Juan Luis Munoz Marin Intl

Fri 8/29

1:10 pm-10:29 pm

1 stop9h 19m

$311

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Thu 9/18

6:55 am-3:10 pm

1 stop8h 15m

San Juan Luis Munoz Marin Intl

Tue 9/23

1:35 pm-8:20 pm

1 stop6h 45m

$329

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Wed 10/1

10:50 am-11:57 pm

2 stops13h 07m

San Juan Luis Munoz Marin Intl

Tue 10/7

1:05 am-9:46 am

2 stops8h 41m

$331

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Thu 5/15

9:51 am-11:31 am

2 stops25h 40m

San Juan Luis Munoz Marin Intl

Sun 5/18

9:30 pm-9:01 am

1 stop11h 31m

$445

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Wed 5/28

7:11 pm-11:10 am

1 stop15h 59m

$126

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Wed 7/2

3:53 pm-11:54 pm

1 stop8h 01m

$146

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Fri 5/16

7:28 pm-2:51 am

1 stop7h 23m

$147

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 14 results
1
2

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 April 25, 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 December is currently the most expensive (average of $336). 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 April 29, 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 April 29, 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
4,295 reviews

Entertainment

7.6

Boarding

8.2

Comfort

8.0

Food

7.1

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Southwest
8.0
Very good
4,295 reviews
Southwest
8.0
Very good
4,295 reviews

Entertainment

7.6

Boarding

8.2

Comfort

8.0

Food

7.1

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Delta
8.0
Very good
7,936 reviews
Southwest
8.0
Very good
4,295 reviews

Entertainment

7.6

Boarding

8.2

Comfort

8.0

Food

7.1

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
United Airlines
7.4
Good
8,696 reviews
Southwest
8.0
Very good
4,295 reviews

Entertainment

7.6

Boarding

8.2

Comfort

8.0

Food

7.1

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
JetBlue
7.3
Good
2,922 reviews
Southwest
8.0
Very good
4,295 reviews

Entertainment

7.6

Boarding

8.2

Comfort

8.0

Food

7.1

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,295 reviews

Entertainment

7.6

Boarding

8.2

Comfort

8.0

Food

7.1

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!

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?

    Delta, at $251, was found to be the cheapest airline from Buffalo to San Juan.Alternate airlines to your destination round-trip include American Airlines and Frontier. These flights start at 36% 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 American Airlines ($126), Delta ($146), and Frontier ($147).

  • 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 $70 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 December is currently the most expensive (average of $336). 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 April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$137Average$376FlexibilityNo cancel feeOn-time62%
DeltaCheapest$240Average$347FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$254Average$439FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$254Average$444FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$280Average$475FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$338Average$525FlexibilityNo cancel feeOn-time63%

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