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Cheap flights from Buffalo to San Juan Luis Munoz Marin Intl Airport from C$ 153

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 7/6. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SJU
27 May — 3 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Buffalo to Luis Munoz Marin Intl

Enter your travel dates to find the best prices.

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 27 April 2026.

Mon 11/59:19 a.m.
BUF
-
SJU
Nonstop3h 54m
JetBlue
Fri 15/57:00 p.m.
SJU
-
BUF
Nonstop4h 48m
JetBlue
Deal found 25/4C$ 357
Tue 12/56:00 a.m.
BUF
-
SJU
1 stop7h 45m
United Airlines
Wed 20/51:00 a.m.
SJU
-
BUF
1 stop8h 53m
United Airlines
Deal found 23/4C$ 374
Sun 23/88:57 p.m.
BUF
-
SJU
1 stop11h 12m
Frontier
Mon 31/89:24 a.m.
SJU
-
BUF
1 stop9h 43m
Frontier
Deal found 25/4C$ 377
Wed 6/510:31 a.m.
BUF
-
SJU
2 stops10h 53m
United Airlines
Sat 9/57:40 a.m.
SJU
-
BUF
1 stop9h 18m
United Airlines
Deal found 23/4C$ 394
Mon 11/52:49 p.m.
BUF
-
SJU
1 stop23h 18m
Frontier
Thu 14/53:03 a.m.
SJU
-
BUF
2 stops10h 51m
Frontier
Deal found 25/4C$ 395
Sat 17/103:50 p.m.
BUF
-
SJU
1 stop8h 06m
Delta
Tue 27/107:00 a.m.
SJU
-
BUF
1 stop8h 36m
Delta
Deal found 25/4C$ 413
Fri 1/511:02 a.m.
BUF
-
SJU
1 stop11h 46m
Multiple Airlines
Mon 4/57:00 p.m.
SJU
-
BUF
Nonstop4h 48m
Multiple Airlines
Deal found 23/4C$ 417
Mon 4/57:00 a.m.
BUF
-
SJU
1 stop9h 31m
Delta
Thu 7/57:05 a.m.
SJU
-
BUF
1 stop7h 57m
Delta
Deal found 25/4C$ 435
Sat 3/1010:50 a.m.
BUF
-
SJU
2 stops13h 00m
United Airlines
Mon 5/101:00 a.m.
SJU
-
BUF
2 stops8h 47m
United Airlines
Deal found 26/4C$ 440

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 27 April 2026.

Round-trip from

C$ 357

One-way from

C$ 153

Popular in

December

Cheapest in

September

Average price

C$ 507
JetBlue
  • JetBlue
  • 11/5-15/5
  • Nonstop
  • 8h 42m total
  • Buffalo to San Juan
Search Deals
Frontier
  • Frontier
  • 7/6
  • 1 total stop
  • 26h 33m total
  • Buffalo to San Juan
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (C$ 93 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
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 629,999 searches. Data last updated 27 April 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
Quickest round-trip

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Mon 11/5

9:19 a.m.-1:13 p.m.

Nonstop3h 54m

San Juan Luis Munoz Marin Intl

Fri 15/5

7:00 p.m.-11:48 p.m.

Nonstop4h 48m

C$ 362

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sat 3/10

6:00 a.m.-4:31 p.m.

1 stop10h 31m

San Juan Luis Munoz Marin Intl

Tue 6/10

7:00 a.m.-2:34 p.m.

1 stop7h 34m

C$ 413

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sat 24/10

3:50 p.m.-11:56 p.m.

1 stop8h 06m

San Juan Luis Munoz Marin Intl

Tue 27/10

7:00 a.m.-3:36 p.m.

1 stop8h 36m

C$ 413

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Tue 20/10

6:00 a.m.-4:33 p.m.

1 stop10h 33m

San Juan Luis Munoz Marin Intl

Tue 27/10

7:00 a.m.-3:36 p.m.

1 stop8h 36m

C$ 502

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sat 9/5

11:02 a.m.-9:24 p.m.

2 stops10h 22m

San Juan Luis Munoz Marin Intl

Wed 13/5

1:00 a.m.-9:53 a.m.

2 stops8h 53m

C$ 506

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Thu 1/10

6:00 a.m.-12:34 p.m.

1 stop6h 34m

San Juan Luis Munoz Marin Intl

Tue 6/10

4:55 p.m.-11:26 p.m.

1 stop6h 31m

C$ 528
Cheapest one-way

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sun 31/5

6:25 a.m.-1:20 p.m.

1 stop6h 55m

C$ 201

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Mon 4/5

10:35 a.m.-11:50 p.m.

2 stops13h 15m

C$ 206

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sun 7/6

6:07 a.m.-12:54 p.m.

1 stop6h 47m

C$ 206

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sat 9/5

7:00 a.m.-8:38 p.m.

2 stops13h 38m

C$ 206

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/4

Showing 1-10 of 15 resultsSorted by cheapest first
1
2

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 C$ 366). Flying from Buffalo to San Juan Luis Munoz Marin Intl Airport in December is currently the most expensive (average of C$ 772). 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 27 April 2026.

When flying from Buffalo to San Juan Luis Munoz Marin Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 27 April 2026.
Get a feel of what it's like to fly with Southwest,Delta, andJetBlue from Buffalo to San Juan Luis Munoz Marin Intl Airport 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
4,313 reviews
Check prices

Boarding

8.1

Food

7.0

Overall

8.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,313 reviews
Southwest
8.0
Very good
4,313 reviews
Check prices

Boarding

8.1

Food

7.0

Overall

8.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,464 reviews
Southwest
8.0
Very good
4,313 reviews
Check prices

Boarding

8.1

Food

7.0

Overall

8.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
JetBlue
7.2
Good
2,967 reviews
Southwest
8.0
Very good
4,313 reviews
Check prices

Boarding

8.1

Food

7.0

Overall

8.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,673 reviews
Southwest
8.0
Very good
4,313 reviews
Check prices

Boarding

8.1

Food

7.0

Overall

8.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Frontier
5.7
Fair
2,971 reviews
Southwest
8.0
Very good
4,313 reviews
Check prices

Boarding

8.1

Food

7.0

Overall

8.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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?

    Most people fly from Buffalo (BUF) if they book a flight from Buffalo to San Juan Luis Munoz Marin Intl. On average, Buffalo has 0 outbound flights to San Juan Luis Munoz Marin Intl per day from 5 airlines. Buffalo is conveniently located just 13.4 km from Buffalo’s city centre.

  • How long is the flight from Buffalo to San Juan Luis Munoz Marin Intl Airport?

    JetBlue and Delta can get you from Buffalo to San Juan Luis Munoz Marin Intl Airport in just under 3h 54m. Your travel time can differ by up to 6h 37m. The distance between Buffalo and San Juan Luis Munoz Marin Intl Airport is about 2974 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with 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 (C$ 172), American Airlines (C$ 199), and Frontier (C$ 235) offers the cheapest pricing from Buffalo to San Juan Luis Munoz Marin Intl Airport. Users have found that Delta is 66% cheaper than the other options available to this destination.

  • 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 C$ 366). Flying from Buffalo to San Juan Luis Munoz Marin Intl Airport in December is currently the most expensive (average of C$ 772). 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

Travelling 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
Bayamón

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Alternative routes for Buffalo to Luis Munoz Marin Intl

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Luis Munoz Marin Intl flights
Newark to Luis Munoz Marin Intl flights

Top 5 airlines flying from Buffalo to Luis Munoz Marin Intl

Discover the top 5 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 629,999 searches. Data last updated 27 April 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 172AverageC$ 421FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapestC$ 199AverageC$ 498FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
FrontierCheapestC$ 235AverageC$ 497FlexibilityNo cancel feeOn-time62%
Search Frontier flights
JetBlueCheapestC$ 291AverageC$ 491FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
SouthwestCheapestC$ 307AverageC$ 619FlexibilityNo cancel feeOn-time63%
Search Southwest flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Buffalo to Luis Munoz Marin Intl?

Cheapflights helps you search for flights from Buffalo to Luis Munoz Marin Intl via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Buffalo to Luis Munoz Marin Intl?

Cheapflights simply makes it quick and affordable to book flights from Buffalo to Luis Munoz Marin Intl by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Buffalo to Luis Munoz Marin Intl with no change fees?

Need flexible booking options for your flight to Luis Munoz Marin Intl from Buffalo? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Buffalo to Luis Munoz Marin Intl become cheaper?

Of course! You can now track prices for flights from Buffalo to Luis Munoz Marin Intl and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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