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Luis Munoz Marin Intl

$69+ Cheap flights from Buffalo (BUF) to Luis Munoz Marin Intl (SJU)

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
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
1 adult, Economy
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Cheapflights Tip: The best prices from Buffalo to San Juan Luis Munoz Marin Intl are usually found in September or March, booked 72 days in advance, depart on a Tuesday or Monday and return on a Thursday

Cheap flight deals from Buffalo to Luis Munoz Marin Intl

Discover tips and strategies to find the most affordable flight options for your journey from Buffalo (BUF) to Luis Munoz Marin Intl (SJU). 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 November 13, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$251
(CheapOair)

One-way from

$69
(Expedia)

Popular in

December

Cheapest in

September

Average price

$368
Provider with most accurate pricing for Buffalo-San Juan Luis Munoz Marin Intl flight deals.
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Provider most trusted by Cheapflights users for Buffalo-San Juan Luis Munoz Marin Intl flights.
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From Buffalo to San Juan Luis Munoz Marin Intl
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One-way flight from Buffalo to San Juan Luis Munoz Marin Intl
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Highest demand for flights based on searches. 5% potential increase in price ($24 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($13 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 Luis Munoz Marin Intl

Cheapest flights from Buffalo to Luis Munoz Marin Intl
Explore the most affordable flight options available from Buffalo to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 13, 2025.

This CheapOair deal was found by Cheapflights users on 11/12. 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.
Thu 12/44:55 pmBUF - SJU
1 stop20h 34mFrontier
Sat 12/63:55 amSJU - BUF
1 stop11h 28mFrontier
Deal found 11/12$251
This American Airlines deal was found by Cheapflights users on 11/12. 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.
Thu 12/47:20 pmBUF - SJU
1 stop16h 41mAmerican Airlines
Mon 12/84:50 pmSJU - BUF
1 stop7h 01mAmerican Airlines
Deal found 11/12$258
This Southwest deal was found by Cheapflights users on 11/12. 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 12/1112:10 pmBUF - SJU
1 stop11h 25mSouthwest
Thu 12/185:55 pmSJU - BUF
1 stop6h 45mSouthwest
Deal found 11/12$262
This SmartFares deal was found by Cheapflights users on 11/11. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/105:00 pmBUF - SJU
1 stop9h 48mJetBlue
Sat 12/135:10 amSJU - BUF
1 stop7h 23mJetBlue
Deal found 11/11$263
This CheapOair deal was found by Cheapflights users on 11/12. 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.
Thu 12/44:55 pmBUF - SJU
1 stop20h 34mFrontier
Sun 12/73:55 amSJU - BUF
1 stop11h 20mFrontier
Deal found 11/12$266
This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Fri 11/213:28 pmBUF - SJU
1 stop7h 59mFrontier
Sun 11/232:25 amSJU - BUF
2 stops14h 55mFrontier
Deal found 11/12$268
This JetBlue deal was found by Cheapflights users on 11/11. 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.
Thu 11/279:45 amBUF - SJU
1 stop7h 07mJetBlue
Tue 12/28:05 amSJU - BUF
1 stop8h 54mJetBlue
Deal found 11/11$279
This American Airlines deal was found by Cheapflights users on 11/12. 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 12/611:54 amBUF - SJU
1 stop9h 11mAmerican Airlines
Mon 12/86:25 amSJU - BUF
1 stop17h 26mAmerican Airlines
Deal found 11/12$281
This Priceline deal was found by Cheapflights users on 11/12. 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 11/197:00 amBUF - SJU
1 stop10h 20mJetBlue
Wed 3/1812:59 amSJU - BUF
1 stop7h 30mJetBlue
Deal found 11/12$282
This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Fri 12/1211:30 amBUF - SJU
2 stops11h 46mMultiple Airlines
Fri 12/197:30 amSJU - BUF
1 stop10h 15mMultiple Airlines
Deal found 11/12$286
This American Airlines deal was found by Cheapflights users on 11/11. 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.
Sun 12/76:00 amBUF - SJU
1 stop15h 05mAmerican Airlines
Wed 12/104:50 pmSJU - BUF
1 stop7h 01mAmerican Airlines
Deal found 11/11$290

Cheapflights Fare Finder

 
Customize your flight search to find flights from Buffalo to Luis Munoz Marin Intl 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 November 13, 2025.
Use the filters below to find and compare flights from Buffalo to San Juan Luis Munoz Marin Intl Airport that are best for you.

Fly from

Buffalo

Fly to

Luis Munoz Marin Intl

Route

Depart

Return

Price

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sat 12/6

11:39 am-10:05 pm

2 stops9h 26m

San Juan Luis Munoz Marin Intl

Wed 12/10

2:36 pm-11:44 pm

2 stops10h 08m

$258

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Thu 12/11

12:10 pm-12:35 am

1 stop11h 25m

San Juan Luis Munoz Marin Intl

Thu 12/18

5:55 pm-11:40 pm

1 stop6h 45m

$262

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Thu 2/5

2:30 pm-12:05 am

1 stop8h 35m

San Juan Luis Munoz Marin Intl

Tue 2/10

6:10 am-4:15 pm

2 stops11h 05m

$277

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sat 1/31

5:50 am-6:30 pm

2 stops11h 40m

San Juan Luis Munoz Marin Intl

Sat 2/7

6:00 am-4:00 pm

1 stop11h 00m

$284

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Tue 12/16

3:00 pm-10:22 pm

1 stop6h 22m

San Juan Luis Munoz Marin Intl

Wed 1/7

8:35 am-4:44 pm

1 stop9h 09m

$315

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Tue 11/18

8:05 am-6:35 pm

2 stops9h 30m

San Juan Luis Munoz Marin Intl

Wed 11/19

5:45 am-2:20 pm

2 stops9h 35m

$317

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Wed 12/10

5:03 am-5:03 pm

2 stops11h 00m

San Juan Luis Munoz Marin Intl

Sat 12/13

8:18 am-4:31 pm

2 stops9h 13m

$352

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Tue 12/16

7:05 am-3:22 pm

1 stop7h 17m

San Juan Luis Munoz Marin Intl

Sat 12/20

2:20 pm-11:54 pm

1 stop10h 34m

$357

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sun 11/16

6:25 am-2:40 pm

1 stop7h 15m

San Juan Luis Munoz Marin Intl

Tue 11/18

8:30 am-2:20 pm

1 stop6h 50m

$363

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Thu 11/20

7:42 pm-4:25 am

1 stop7h 43m

San Juan Luis Munoz Marin Intl

Sat 11/22

1:59 am-9:21 am

1 stop8h 22m

$364

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/11

Showing 1-10 of 19 results
1
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Compare providers for flights from Buffalo to Luis Munoz Marin Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Buffalo to Luis Munoz Marin Intl in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Buffalo-San Juan Luis Munoz Marin Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Buffalo-San Juan Luis Munoz Marin Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Buffalo-San Juan Luis Munoz Marin Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Buffalo-San Juan Luis Munoz Marin Intl Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Buffalo-San Juan Luis Munoz Marin Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Buffalo to Luis Munoz Marin Intl

Have a flexible travel schedule? Discover the best time to fly to Luis Munoz Marin Intl 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 Luis Munoz Marin Intl Airport

How far ahead should I book a flight from Buffalo to San Juan Luis Munoz Marin Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Buffalo to Luis Munoz Marin Intl. Price data was last updated on November 7, 2025.

The best time to book flights from Buffalo to San Juan Luis Munoz Marin Intl Airport is 72 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Buffalo to San Juan Luis Munoz Marin Intl Airport?

Currently, May is the cheapest month in which you can book a flight from Buffalo to San Juan Luis Munoz Marin Intl Airport (average of $141). Flying from Buffalo to San Juan Luis Munoz Marin Intl Airport 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 Luis Munoz Marin Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 13, 2025.

A simple way to save on the total cost of your ticket is to fly from Buffalo to San Juan Luis Munoz Marin Intl Airport in the evening. If you’re flexible enough to do this you can expect to save up to 30% on your trip compared to booking a flight at noon.

What is the cheapest day to fly from Buffalo to San Juan Luis Munoz Marin Intl Airport?

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

Travelers seeking maximum savings on their Buffalo to San Juan Luis Munoz Marin Intl Airport 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 Luis Munoz Marin Intl

Get insights into the airlines that provide service to Luis Munoz Marin Intl. 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 Luis Munoz Marin Intl. Reviews last updated November 13, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and American Airlines from Buffalo to San Juan Luis Munoz Marin Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,236 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

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
4,236 reviews
Southwest
8.0
Very good
4,236 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

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
8,007 reviews
Southwest
8.0
Very good
4,236 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

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
11,050 reviews
Southwest
8.0
Very good
4,236 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

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
2,907 reviews
Southwest
8.0
Very good
4,236 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

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
3,114 reviews
Southwest
8.0
Very good
4,236 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

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 Luis Munoz Marin Intl. 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 Luis Munoz Marin Intl?

    Buffalo (BUF) is the airport you will fly out of if you book a flight from Buffalo to San Juan Luis Munoz Marin Intl. You should not have trouble finding flights to San Juan Luis Munoz Marin Intl from Buffalo; the airport handles an average of 0 outbound flights to San Juan Luis Munoz Marin Intl 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 Luis Munoz Marin Intl. 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 Luis Munoz Marin Intl Airport?

    Airlines like American Airlines, Southwest, and United Airlines fly from Buffalo to San Juan Luis Munoz Marin Intl Airport in about 6h 22m. The time it takes to get you to your destination can typically vary by up to 5h 03m. Airlines will cover a distance of 1848 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Buffalo to San Juan Luis Munoz Marin Intl Airport round-trip?

    According to our current data, Frontier ($134), Delta ($160), and Southwest ($225) offers the cheapest pricing from Buffalo to San Juan Luis Munoz Marin Intl Airport. Frontier is 65% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Buffalo to San Juan Luis Munoz Marin Intl Airport one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $84. Users have also found prices from $113 and $120 on Delta and American Airlines, respectively.

  • Where are the most common layover locations when flying from Buffalo to San Juan Luis Munoz Marin Intl Airport?

    The most popular layover on flights from Buffalo to San Juan Luis Munoz Marin Intl Airport is New York.

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

    The majority of New York visitors spend their time at Times Square, New York City Center, and Madison Square Garden. Times Square, New York City Center, and Madison Square Garden are located about 13.6 mi, 13.6 mi, and 13.6 mi, respectively from New York John F Kennedy Intl. Those landing in New York looking to spend some time exploring during their layover can rent a car for about $61 per day.

  • Where are the least popular layover locations for Buffalo to San Juan Luis Munoz Marin Intl Airport flights?

    Buffalo to San Juan Luis Munoz Marin Intl Airport flights have a layover in New York the least frequently.

  • Can I find deals for flights from Buffalo to Luis Munoz Marin Intl that include hotel bookings?

    Yes. In addition to deals on Buffalo to Luis Munoz Marin Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Buffalo to Luis Munoz Marin Intl?

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

  • Can I find deals for business class flights from Buffalo to Luis Munoz Marin Intl?

    Yes. Cheapflights offers flight deals from Buffalo to Luis Munoz Marin Intl 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 Luis Munoz Marin Intl Airport?

    Currently, May is the cheapest month in which you can book a flight from Buffalo to San Juan Luis Munoz Marin Intl Airport (average of $141). Flying from Buffalo to San Juan Luis Munoz Marin Intl Airport 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

Traveling to a place near San Juan Luis Munoz Marin Intl Airport?

Book flights to San Juan Luis Munoz Marin Intl Airport if you plan to visit one of these locations
Dorado
Fajardo
Rio Grande
Humacao
Luquillo

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Top 6 airlines flying from Buffalo to Luis Munoz Marin Intl

Discover the top 6 airlines that operate flights from Buffalo to Luis Munoz Marin Intl. 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 November 13, 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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