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San Juan

$69+ 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 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SJU
dic. 5 — dic. 121
vie. 12/5
vie. 12/12
1 adult, Economy
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Cheapflights Tip: The best prices from Buffalo to San Juan are usually found in September or March, booked 44 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 noviembre 5, 2025.

Round-trip from

$264
(Trip.com)

One-way from

$69
(Priceline)

Popular in

December

Cheapest in

September

Average price

$361
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. 2% potential increase in price ($12 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in November 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 noviembre 5, 2025.

This CheapOair deal was found by Cheapflights users on 11/3. 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.
jue. 11/138:54 pmBUF - SJU
1 stop14h 07mFrontier
dom. 11/163:59 amSJU - BUF
1 stop8h 45mFrontier
Deal found 11/3$266
This United Airlines deal was found by Cheapflights users on 11/2. 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. 11/126:00 amBUF - SJU
2 stops14h 26mUnited Airlines
mar. 11/188:10 amSJU - BUF
1 stop9h 38mUnited Airlines
Deal found 11/2$268
This Kiwi.com deal was found by Cheapflights users on 11/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/63:18 pmBUF - SJU
1 stop10h 32mFrontier
mar. 12/93:55 amSJU - BUF
2 stops32h 15mFrontier
Deal found 11/2$273
This Gotogate deal was found by Cheapflights users on 11/4. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/2011:40 amBUF - SJU
1 stop14h 14mFrontier
dom. 11/233:59 amSJU - BUF
1 stop13h 21mFrontier
Deal found 11/4$278
This CheapOair deal was found by Cheapflights users on 11/5. 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.
jue. 12/44:55 pmBUF - SJU
1 stop20h 34mFrontier
jue. 12/117:00 amSJU - BUF
1 stop10h 00mFrontier
Deal found 11/5$281
This JetBlue deal was found by Cheapflights users on 11/3. 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.
sáb. 12/66:29 pmBUF - SJU
1 stop8h 19mJetBlue
mié. 12/1010:00 amSJU - BUF
1 stop6h 59mJetBlue
Deal found 11/3$282
This United Airlines deal was found by Cheapflights users on 11/4. 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.
dom. 11/167:00 amBUF - SJU
2 stops13h 26mUnited Airlines
jue. 11/208:10 amSJU - BUF
2 stops11h 36mUnited Airlines
Deal found 11/4$289
This American Airlines deal was found by Cheapflights users on 11/5. 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.
mié. 12/1011:39 amBUF - SJU
2 stops9h 30mAmerican Airlines
sáb. 12/136:25 amSJU - BUF
1 stop17h 29mAmerican Airlines
Deal found 11/5$290

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 noviembre 5, 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

mié. 11/12

6:00 am-9:26 pm

2 stops14h 26m

San Juan Luis Munoz Marin Intl

mar. 11/18

8:10 am-4:48 pm

1 stop9h 38m

$268

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

jue. 1/29

11:51 am-11:59 pm

1 stop11h 08m

San Juan Luis Munoz Marin Intl

dom. 2/15

7:00 am-2:58 pm

1 stop8h 58m

$284

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

dom. 12/7

11:39 am-10:05 pm

2 stops9h 26m

San Juan Luis Munoz Marin Intl

sáb. 12/13

8:18 am-4:31 pm

2 stops9h 13m

$290

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

mié. 1/7

6:03 am-2:10 pm

1 stop7h 07m

San Juan Luis Munoz Marin Intl

mar. 1/13

7:00 am-2:58 pm

1 stop8h 58m

$305

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

sáb. 11/8

3:57 pm-1:15 am

1 stop8h 18m

San Juan Luis Munoz Marin Intl

lun. 11/17

1:57 pm-11:50 pm

1 stop10h 53m

$352

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

dom. 11/23

7:57 pm-3:48 am

1 stop6h 51m

San Juan Luis Munoz Marin Intl

jue. 11/27

2:53 pm-9:51 pm

1 stop7h 58m

$364

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

jue. 12/11

12:10 pm-10:05 pm

1 stop8h 55m

San Juan Luis Munoz Marin Intl

lun. 12/15

5:45 am-11:30 am

1 stop6h 45m

$364

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

sáb. 11/8

12:15 pm-9:54 pm

1 stop8h 39m

San Juan Luis Munoz Marin Intl

lun. 11/17

12:30 pm-8:34 pm

1 stop9h 04m

$366

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

mié. 11/12

12:40 pm-12:35 am

2 stops10h 55m

San Juan Luis Munoz Marin Intl

mar. 11/18

5:45 am-2:20 pm

2 stops9h 35m

$371

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

sáb. 11/8

10:45 am-6:40 pm

1 stop6h 55m

San Juan Luis Munoz Marin Intl

lun. 11/10

7:40 am-6:00 pm

1 stop11h 20m

$381

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/5

Showing 1-10 of 22 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 October 31, 2025.

To ensure you get the cheapest price possible for a flight from Buffalo to San Juan, you should look to book at least 44 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 June is currently the most expensive (average of $254). 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 noviembre 5, 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 29% 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.

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 noviembre 5, 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.
Southwest
8.0
Very good
4,239 reviews

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Crew

8.6

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
4,239 reviews
Southwest
8.0
Very good
4,239 reviews

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Crew

8.6

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
7.9
Good
8,004 reviews
Southwest
8.0
Very good
4,239 reviews

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Crew

8.6

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
11,039 reviews
Southwest
8.0
Very good
4,239 reviews

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Crew

8.6

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
2,908 reviews
Southwest
8.0
Very good
4,239 reviews

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Crew

8.6

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
3,115 reviews
Southwest
8.0
Very good
4,239 reviews

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Crew

8.6

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 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 $290, United Airlines can have you in San Juan from Buffalo in 9h 26m. 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 $134, was found to be the cheapest airline from Buffalo to San Juan.Alternate airlines to your destination round-trip include Delta and Southwest. These flights start at 65% 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 Frontier ($69), Delta ($113), and Southwest ($141).

  • 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 $61 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 New York.

  • 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 June is currently the most expensive (average of $254). 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 noviembre 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$134Average$271FlexibilityNo cancel feeOn-time62%
DeltaCheapest$160Average$317FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$225Average$491FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$254Average$414FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$264Average$394FlexibilityNo cancel feeOn-time71%
JetBlueCheapest$277Average$408FlexibilityNo cancel feeOn-time62%

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