HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Luis Munoz Marin Intl

$137+ 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 6/26. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SJU
Jul 10 — Jul 171
Fri 7/10
Fri 7/17
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Buffalo to Luis Munoz Marin Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.
Cheapflights Tip: The best prices from Buffalo to San Juan Luis Munoz Marin Intl are usually found in September or March, booked 88 days in advance, depart on a Thursday or Tuesday and return on a Tuesday

Cheap 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 June 10, 2026.

This American Airlines deal was found by Cheapflights users on 6/9. 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.
Wed 9/26:50 am
BUF
-
SJU
1 stop8h 01m
American Airlines
Mon 9/2810:16 am
SJU
-
BUF
2 stops13h 38m
American Airlines
Deal found 6/9$293
This American Airlines deal was found by Cheapflights users on 6/8. 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.
Wed 9/96:00 am
BUF
-
SJU
2 stops9h 40m
American Airlines
Thu 10/83:50 pm
SJU
-
BUF
1 stop8h 21m
American Airlines
Deal found 6/8$300
This United Airlines deal was found by Cheapflights users on 6/9. 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.
Tue 10/2710:50 am
BUF
-
SJU
2 stops12h 46m
United Airlines
Wed 10/287:30 am
SJU
-
BUF
2 stops10h 29m
United Airlines
Deal found 6/9$303
This Cheapflightsfares deal was found by Cheapflights users on 6/6. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/247:00 am
BUF
-
SJU
Nonstop4h 43m
JetBlue
Sat 7/186:29 pm
SJU
-
BUF
Nonstop4h 38m
JetBlue
Deal found 6/6$310
This United Airlines deal was found by Cheapflights users on 6/6. 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.
Sat 9/56:55 am
BUF
-
SJU
1 stop7h 49m
United Airlines
Thu 9/104:55 pm
SJU
-
BUF
1 stop6h 49m
United Airlines
Deal found 6/6$312
This American Airlines deal was found by Cheapflights users on 6/10. 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.
Wed 8/1910:26 am
BUF
-
SJU
2 stops11h 29m
American Airlines
Wed 9/22:33 pm
SJU
-
BUF
2 stops9h 03m
American Airlines
Deal found 6/10$317
This American Airlines deal was found by Cheapflights users on 6/9. 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 9/36:50 am
BUF
-
SJU
1 stop17h 09m
American Airlines
Wed 9/306:27 am
SJU
-
BUF
2 stops11h 01m
American Airlines
Deal found 6/9$319
This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/77:00 am
BUF
-
SJU
Nonstop4h 33m
JetBlue
Fri 8/146:20 pm
SJU
-
BUF
Nonstop4h 38m
JetBlue
Deal found 6/10$320
This JetBlue deal was found by Cheapflights users on 6/9. 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.
Fri 9/47:00 am
BUF
-
SJU
Nonstop4h 33m
JetBlue
Sat 10/36:15 pm
SJU
-
BUF
Nonstop4h 38m
JetBlue
Deal found 6/9$325
This Cheapflightsfares deal was found by Cheapflights users on 6/8. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/127:35 am
BUF
-
SJU
Nonstop4h 33m
JetBlue
Mon 6/156:20 pm
SJU
-
BUF
Nonstop4h 38m
JetBlue
Deal found 6/8$330

Find 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 June 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$293
(American Airlines)

One-way from

$137
(Cheapflightsfares)

Popular in

December

Cheapest in

September

Average price

$381

Good round-trip deal

$370 or less

Good one-way deal

$158 or less
Provider with most accurate pricing for Buffalo-San Juan Luis Munoz Marin Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Buffalo-San Juan Luis Munoz Marin Intl flights.
Search Deals
From Buffalo to San Juan Luis Munoz Marin Intl
Search Deals
One-way flight from Buffalo to San Juan Luis Munoz Marin Intl
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($51 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from Buffalo to San Juan Luis Munoz Marin Intl.
Search Deals
Price to beat on a one-way flight from Buffalo to San Juan Luis Munoz Marin Intl.
Search Deals

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 June 10, 2026.
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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sat 10/3

1:10 pm-10:05 pm

1 stop8h 55m

San Juan Luis Munoz Marin Intl

Fri 10/9

9:45 pm-9:15 am

1 stop11h 30m

$312

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sat 9/5

6:55 am-2:44 pm

1 stop7h 49m

San Juan Luis Munoz Marin Intl

Thu 9/10

4:55 pm-11:44 pm

1 stop6h 49m

$312

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Fri 10/9

3:10 pm-11:10 pm

1 stop8h 00m

San Juan Luis Munoz Marin Intl

Tue 10/13

5:35 am-2:50 pm

2 stops9h 15m

$312

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sun 9/6

6:05 am-4:38 pm

1 stop10h 33m

San Juan Luis Munoz Marin Intl

Sat 9/12

3:10 pm-11:03 pm

1 stop7h 53m

$334

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sun 11/1

5:20 am-5:00 pm

1 stop10h 40m

San Juan Luis Munoz Marin Intl

Tue 11/3

5:45 am-3:10 pm

2 stops10h 25m

$348

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Fri 8/28

7:00 am-4:33 pm

1 stop9h 33m

San Juan Luis Munoz Marin Intl

Mon 8/31

12:56 pm-11:59 pm

1 stop11h 03m

$369
Quickest round-trip

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Tue 9/22

6:00 am-3:56 pm

1 stop9h 56m

San Juan Luis Munoz Marin Intl

Wed 9/23

6:15 pm-10:53 pm

Nonstop4h 38m

$372

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Mon 8/10

3:55 pm-10:50 pm

1 stop6h 55m

San Juan Luis Munoz Marin Intl

Sat 8/22

6:25 am-4:45 pm

1 stop10h 20m

$380

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Wed 11/4

8:25 am-10:15 pm

1 stop12h 50m

San Juan Luis Munoz Marin Intl

Mon 11/9

6:35 am-2:25 pm

1 stop8h 50m

$387

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Tue 9/22

10:30 am-11:50 pm

2 stops13h 20m

San Juan Luis Munoz Marin Intl

Wed 9/23

4:20 pm-9:29 am

2 stops17h 09m

$459

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

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 June.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star
BudgetAirPrice Accuracy2 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy1 starTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
Super.comPrice Accuracy-Trust 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Buffalo-San Juan Luis Munoz Marin Intl Airport flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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?

The best time to book flights from Buffalo to San Juan Luis Munoz Marin Intl Airport is 87 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, September is the cheapest month in which you can book a flight from Buffalo to San Juan Luis Munoz Marin Intl Airport (average of $305). Flying from Buffalo to San Juan Luis Munoz Marin Intl Airport in December is currently the most expensive (average of $565). 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 June 10, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Buffalo to San Juan Luis Munoz Marin Intl Airport as you normally would.

How much does it cost to fly round-trip from Buffalo to San Juan Luis Munoz Marin Intl Airport?

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 June 10, 2026.
Peruse reviews from past customers who have flown with Southwest,Delta, andAmerican 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
7.9
Good
4,237 reviews

Boarding

8.1

Food

7.0

Overall

7.9

Entertainment

7.5

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.
Southwest
7.9
Good
4,237 reviews
Southwest
7.9
Good
4,237 reviews

Boarding

8.1

Food

7.0

Overall

7.9

Entertainment

7.5

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.
Delta
7.9
Good
8,395 reviews
Southwest
7.9
Good
4,237 reviews

Boarding

8.1

Food

7.0

Overall

7.9

Entertainment

7.5

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.
American Airlines
7.1
Good
11,640 reviews
Southwest
7.9
Good
4,237 reviews

Boarding

8.1

Food

7.0

Overall

7.9

Entertainment

7.5

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.
JetBlue
7.1
Good
2,980 reviews
Southwest
7.9
Good
4,237 reviews

Boarding

8.1

Food

7.0

Overall

7.9

Entertainment

7.5

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.
Frontier
5.6
Fair
2,898 reviews
Southwest
7.9
Good
4,237 reviews

Boarding

8.1

Food

7.0

Overall

7.9

Entertainment

7.5

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.

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, United Airlines, and JetBlue fly from Buffalo to San Juan Luis Munoz Marin Intl Airport in about 4h 43m. The time it takes to get you to your destination can typically vary by up to 8h 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, Delta ($106), Frontier ($129), and JetBlue ($207) offers the cheapest pricing from Buffalo to San Juan Luis Munoz Marin Intl Airport. Delta is 72% 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 $96. Users have also found prices from $102 and $102 on Delta and Southwest, respectively.

  • What are the cheapest flights from Buffalo to San Juan Luis Munoz Marin Intl Airport?

    The cheapest flight price from Buffalo to San Juan Luis Munoz Marin Intl Airport is $158. On average you can expect to pay $310. The most popular route, (Buffalo - San Juan Luis Munoz Marin Intl), can usually be booked for $265.

  • 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 $72 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, September is the cheapest month in which you can book a flight from Buffalo to San Juan Luis Munoz Marin Intl Airport (average of $305). Flying from Buffalo to San Juan Luis Munoz Marin Intl Airport in December is currently the most expensive (average of $565). 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
Fajardo
Luquillo
Rio Grande
Dorado
Humacao
Bayamón

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 June 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$106Average$306FlexibilityNo cancel feeOn-timeN/A
FrontierCheapest$129Average$266FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$207Average$382FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$211Average$474FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$225Average$397FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$231Average$453FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.