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Cheap flights from Buffalo to San Juan Luis Munoz Marin Intl Airport from C$ 144

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 7/5. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SJU
15 Apr — 22 Apr1
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 16 March 2026.

Sun 26/43:58 p.m.
BUF
-
SJU
1 stop22h 08m
Frontier
Wed 29/43:21 a.m.
SJU
-
BUF
1 stop15h 52m
Frontier
Deal found 12/3C$ 313
Tue 28/412:09 p.m.
BUF
-
SJU
1 stop11h 04m
Delta
Mon 4/56:15 a.m.
SJU
-
BUF
1 stop9h 38m
Delta
Deal found 11/3C$ 318
Sun 26/48:18 p.m.
BUF
-
SJU
1 stop27h 25m
Frontier
Fri 1/53:19 p.m.
SJU
-
BUF
1 stop19h 30m
Frontier
Deal found 12/3C$ 321
Mon 13/412:42 p.m.
BUF
-
SJU
1 stop7h 08m
Multiple Airlines
Thu 16/46:00 a.m.
SJU
-
BUF
2 stops29h 13m
Multiple Airlines
Deal found 12/3C$ 336
Tue 14/42:34 p.m.
BUF
-
SJU
1 stop9h 25m
Delta
Wed 22/412:55 p.m.
SJU
-
BUF
1 stop10h 42m
Delta
Deal found 12/3C$ 339
Sun 26/46:05 a.m.
BUF
-
SJU
1 stop6h 47m
Delta
Tue 5/57:15 a.m.
SJU
-
BUF
1 stop7h 37m
Delta
Deal found 14/3C$ 346
Tue 16/63:00 p.m.
BUF
-
SJU
1 stop8h 45m
Southwest
Wed 15/75:00 a.m.
SJU
-
BUF
1 stop9h 20m
Southwest
Deal found 12/3C$ 359
Sun 26/46:05 a.m.
BUF
-
SJU
1 stop6h 47m
Delta
Fri 1/55:42 p.m.
SJU
-
BUF
1 stop7h 08m
Delta
Deal found 14/3C$ 366
Tue 19/56:00 a.m.
BUF
-
SJU
1 stop7h 45m
United Airlines
Thu 28/51:00 a.m.
SJU
-
BUF
1 stop8h 53m
United Airlines
Deal found 12/3C$ 369
Fri 10/49:05 p.m.
BUF
-
SJU
2 stops14h 44m
Multiple Airlines
Thu 16/411:02 a.m.
SJU
-
BUF
1 stop24h 11m
Multiple Airlines
Deal found 12/3C$ 375
Mon 13/412:42 p.m.
BUF
-
SJU
1 stop7h 08m
Multiple Airlines
Tue 21/411:30 a.m.
SJU
-
BUF
2 stops25h 12m
Multiple Airlines
Deal found 12/3C$ 380

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 16 March 2026.

Round-trip from

C$ 313

One-way from

C$ 144

Popular in

December

Cheapest in

September

Average price

C$ 464

Good round-trip deal

C$ 468 or less
Frontier
  • Frontier
  • 26/4-29/4
  • 2 total stops
  • 38h 00m total
  • Buffalo to San Juan
Search Deals
Frontier
  • Frontier
  • 7/5
  • 1 total stop
  • 11h 15m total
  • Buffalo to San Juan
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (C$ 84 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip 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 629,999 searches. Data last updated 16 March 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

Sun 12/4

6:00 a.m.-4:18 p.m.

1 stop10h 18m

San Juan Luis Munoz Marin Intl

Thu 16/4

6:15 a.m.-3:53 p.m.

1 stop9h 38m

C$ 381

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sat 2/5

2:00 p.m.-11:15 p.m.

1 stop9h 15m

San Juan Luis Munoz Marin Intl

Tue 12/5

5:35 a.m.-2:35 p.m.

2 stops9h 00m

C$ 395

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Mon 13/4

2:34 p.m.-11:59 p.m.

1 stop9h 25m

San Juan Luis Munoz Marin Intl

Wed 22/4

12:55 p.m.-11:37 p.m.

1 stop10h 42m

C$ 435

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sun 12/4

10:50 a.m.-8:34 p.m.

1 stop9h 44m

San Juan Luis Munoz Marin Intl

Wed 15/4

1:00 a.m.-10:00 a.m.

2 stops9h 00m

C$ 442
Quickest round-trip

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Mon 20/4

5:20 p.m.-11:40 p.m.

1 stop6h 20m

San Juan Luis Munoz Marin Intl

Tue 21/4

2:00 p.m.-9:45 p.m.

1 stop7h 45m

C$ 453

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Wed 17/6

3:00 p.m.-11:45 p.m.

1 stop8h 45m

San Juan Luis Munoz Marin Intl

Wed 24/6

5:30 a.m.-12:00 p.m.

1 stop6h 30m

C$ 464

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Thu 30/4

2:28 p.m.-10:12 p.m.

1 stop7h 44m

San Juan Luis Munoz Marin Intl

Tue 5/5

5:01 a.m.-1:33 p.m.

1 stop8h 32m

C$ 505

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Wed 6/5

6:00 a.m.-4:23 p.m.

1 stop10h 23m

San Juan Luis Munoz Marin Intl

Fri 15/5

1:14 p.m.-11:59 p.m.

1 stop10h 45m

C$ 510
Cheapest one-way

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Thu 7/5

8:49 p.m.-8:04 a.m.

1 stop11h 15m

C$ 144

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Tue 28/4

11:49 a.m.-10:05 p.m.

2 stops10h 16m

C$ 159

Flights are sorted by cheapest round-trip flights first.

Deals found on 15/3

Showing 1-10 of 19 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?

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 13 March 2026.

The best time to book flights from Buffalo to San Juan Luis Munoz Marin Intl Airport is 88 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, February is the cheapest month in which you can book a flight from Buffalo to San Juan Luis Munoz Marin Intl Airport (average of C$ 189). Flying from Buffalo to San Juan Luis Munoz Marin Intl Airport in December is currently the most expensive (average of C$ 354). 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.

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 16 March 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
4,318 reviews
Check prices

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..
Southwest
8.0
Very good
4,318 reviews
Southwest
8.0
Very good
4,318 reviews
Check prices

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..
Delta
7.9
Good
8,292 reviews
Southwest
8.0
Very good
4,318 reviews
Check prices

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..
JetBlue
7.2
Good
2,906 reviews
Southwest
8.0
Very good
4,318 reviews
Check prices

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..
American Airlines
7.1
Good
11,465 reviews
Southwest
8.0
Very good
4,318 reviews
Check prices

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..
Frontier
5.7
Fair
3,030 reviews
Southwest
8.0
Very good
4,318 reviews
Check prices

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..

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?

    Delta, Southwest, and United Airlines can get you from Buffalo to San Juan Luis Munoz Marin Intl Airport in just under 9h 15m. Your travel time can differ by up to 1h 03m. 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$ 200), and Frontier (C$ 236) 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.

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

    While on average a flight from Buffalo to San Juan Luis Munoz Marin Intl Airport is generally C$ 537, our data shows the cheapest flight currently is C$ 399. When looking at the most popular route, (Buffalo - San Juan Luis Munoz Marin Intl), you can expect to pay C$ 418 for that flight.

  • 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, February is the cheapest month in which you can book a flight from Buffalo to San Juan Luis Munoz Marin Intl Airport (average of C$ 189). Flying from Buffalo to San Juan Luis Munoz Marin Intl Airport in December is currently the most expensive (average of C$ 354). 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
Luquillo
Bayamón

Browse thousands of different options on Cheapflights for your next trip

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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.
Newark to Luis Munoz Marin Intl flights
John F Kennedy Intl 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 16 March 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 172AverageC$ 421FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapestC$ 200AverageC$ 500FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
FrontierCheapestC$ 236AverageC$ 514FlexibilityNo cancel feeOn-time62%
Search Frontier flights
SouthwestCheapestC$ 309AverageC$ 641FlexibilityNo cancel feeOn-time63%
Search Southwest flights
JetBlueCheapestC$ 311AverageC$ 495FlexibilityNo cancel feeOn-time62%
Search JetBlue 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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