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Luis Munoz Marin Intl

$103+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SJU
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
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 November, booked 42 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 August 14, 2025.

Round-trip from

$215
(United Airlines)

One-way from

$103
(Delta)

Popular in

December

Cheapest in

September

Average price

$413
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. 0% potential increase in price ($1 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in August 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 August 14, 2025.

This United Airlines deal was found by Cheapflights users on 8/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/226:00 amBUF - SJU
2 stops14h 38mUnited Airlines
Fri 9/261:30 pmSJU - BUF
1 stop9h 08mUnited Airlines
Deal found 8/11$215
This American Airlines deal was found by Cheapflights users on 8/12. 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.
Mon 10/208:00 amBUF - SJU
1 stop15h 59mAmerican Airlines
Sat 10/257:10 amSJU - BUF
2 stops11h 00mAmerican Airlines
Deal found 8/12$220
This Southwest deal was found by Cheapflights users on 8/14. 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 10/24:15 pmBUF - SJU
1 stop8h 30mSouthwest
Thu 10/95:30 pmSJU - BUF
1 stop6h 20mSouthwest
Deal found 8/14$240
This American Airlines deal was found by Cheapflights users on 8/11. 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.
Thu 10/26:25 amBUF - SJU
1 stop8h 34mAmerican Airlines
Mon 10/67:00 pmSJU - BUF
2 stops16h 22mAmerican Airlines
Deal found 8/11$245
This American Airlines deal was found by Cheapflights users on 8/13. 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.
Mon 10/2711:54 amBUF - SJU
1 stop12h 00mAmerican Airlines
Mon 11/33:05 pmSJU - BUF
2 stops9h 38mAmerican Airlines
Deal found 8/13$247
This American Airlines deal was found by Cheapflights users on 8/13. 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 9/206:00 amBUF - SJU
2 stops17h 37mAmerican Airlines
Sat 9/274:45 pmSJU - BUF
2 stops17h 02mAmerican Airlines
Deal found 8/13$251
This Southwest deal was found by Cheapflights users on 8/14. 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 10/25:25 pmBUF - SJU
1 stop6h 25mSouthwest
Sun 10/125:45 amSJU - BUF
1 stop6h 15mSouthwest
Deal found 8/14$261
This Trip.com deal was found by Cheapflights users on 8/14. 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.
Sun 8/315:35 amBUF - SJU
1 stop7h 15mJetBlue
Thu 10/307:00 amSJU - BUF
1 stop8h 39mJetBlue
Deal found 8/14$264
This Priceline deal was found by Cheapflights users on 8/13. 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.
Fri 9/126:59 pmBUF - SJU
1 stop29h 00mFrontier
Fri 9/194:42 pmSJU - BUF
1 stop25h 32mFrontier
Deal found 8/13$265
This Priceline deal was found by Cheapflights users on 8/11. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/67:11 pmBUF - SJU
1 stop7h 23mFrontier
Fri 9/123:39 amSJU - BUF
1 stop14h 35mFrontier
Deal found 8/11$270
This Delta deal was found by Cheapflights users on 8/13. 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.
Thu 9/183:52 pmBUF - SJU
1 stop7h 55mDelta
Tue 9/237:00 amSJU - BUF
1 stop8h 08mDelta
Deal found 8/13$272
This FlightHub deal was found by Cheapflights users on 8/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/147:41 pmBUF - SJU
1 stop6h 53mFrontier
Fri 9/193:39 amSJU - BUF
1 stop14h 35mFrontier
Deal found 8/12$274

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 August 14, 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

Mon 9/22

7:40 am-3:52 pm

1 stop8h 12m

San Juan Luis Munoz Marin Intl

Mon 9/29

7:05 pm-11:29 am

2 stops16h 24m

$215

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Mon 9/22

6:00 am-8:38 pm

2 stops14h 38m

San Juan Luis Munoz Marin Intl

Fri 9/26

1:30 pm-10:38 pm

1 stop9h 08m

$215

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sat 9/27

6:00 am-11:37 pm

2 stops17h 37m

San Juan Luis Munoz Marin Intl

Thu 10/2

3:50 pm-12:12 am

1 stop8h 22m

$215

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Thu 10/2

6:25 am-2:59 pm

1 stop8h 34m

San Juan Luis Munoz Marin Intl

Thu 10/9

3:50 pm-12:15 am

1 stop8h 25m

$215

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sat 9/6

6:00 am-11:37 pm

2 stops17h 37m

San Juan Luis Munoz Marin Intl

Sat 9/13

3:55 pm-9:47 am

2 stops17h 52m

$215

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Mon 10/20

8:00 am-11:59 pm

1 stop15h 59m

San Juan Luis Munoz Marin Intl

Sat 10/25

5:25 am-2:52 pm

1 stop9h 27m

$220

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sat 9/20

6:00 am-11:37 pm

2 stops17h 37m

San Juan Luis Munoz Marin Intl

Sat 9/27

3:55 pm-9:47 am

2 stops17h 52m

$220

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Thu 10/2

5:45 pm-12:45 am

1 stop7h 00m

San Juan Luis Munoz Marin Intl

Thu 10/9

5:30 pm-11:50 pm

1 stop6h 20m

$240

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Mon 10/6

5:45 pm-12:45 am

1 stop7h 00m

San Juan Luis Munoz Marin Intl

Thu 10/16

5:50 am-12:10 pm

1 stop6h 20m

$240

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Thu 10/2

6:25 am-2:59 pm

1 stop8h 34m

San Juan Luis Munoz Marin Intl

Sun 10/12

5:30 am-6:18 pm

1 stop12h 48m

$240

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 21 results
1
2
3

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 August 8, 2025.

The best time to book flights from Buffalo to San Juan Luis Munoz Marin Intl Airport is 42 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 $254). Flying from Buffalo to San Juan Luis Munoz Marin Intl Airport 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 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 August 14, 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 31% 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.

What’s the top layover airport for flights from Buffalo to San Juan Luis Munoz Marin Intl Airport?

Share of 1-stop round-trip flights from Buffalo to San Juan Luis Munoz Marin Intl Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.

Orlando (MCO) – chosen by Cheapflights users on 60% of 1-stop itineraries from Buffalo to San Juan Luis Munoz Marin Intl Airport on Cheapflights.

What’s the cheapest layover airport for flights from Buffalo to San Juan Luis Munoz Marin Intl Airport?

Average round-trip fare for 1-stop flights from Buffalo to San Juan Luis Munoz Marin Intl Airport, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Orlando (MCO) is the most affordable 1-stop option, with an average round-trip price of $456.

What’s the fastest layover option from Buffalo to San Juan Luis Munoz Marin Intl Airport?

Shortest average travel time for 1-stop one-way flights from Buffalo to San Juan Luis Munoz Marin Intl Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Baltimore (BWI) have the shortest average one-way travel time for 1-stop routes: 7h 03m.

Which airport typically offers the quickest layover for flights from Buffalo to San Juan Luis Munoz Marin Intl Airport?

Average layover duration for 1-stop one-way flights from Buffalo to San Juan Luis Munoz Marin Intl Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Baltimore (BWI) offer the fastest connection on this route, with an average layover time of 2h 04m.

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 August 14, 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
4,244 reviews

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,244 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
8.0
Very good
7,980 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
JetBlue
7.2
Good
2,913 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,217 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

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.

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

    According to our current data, Frontier ($130), Delta ($167), and Southwest ($251) offers the cheapest pricing from Buffalo to San Juan Luis Munoz Marin Intl Airport. Frontier is 67% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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 $87 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 Orlando 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 $254). Flying from Buffalo to San Juan Luis Munoz Marin Intl Airport 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

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
Luquillo
Humacao

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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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$130Average$247FlexibilityNo cancel feeOn-time62%
DeltaCheapest$167Average$334FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$251Average$502FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$257Average$436FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$270Average$432FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$290Average$478FlexibilityNo cancel feeOn-time69%

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