Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Buffalo to San Juan from C$ 160

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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SJU
17 Jan — 24 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Buffalo to San Juan

Enter your travel dates to find the best prices.

Cheapest flights from Buffalo to San Juan
Explore the most affordable flight options available from Buffalo to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 December 2025.

Tue 16/127:00 a.m.BUF - SJU
2 stops13h 26mUnited Airlines
Wed 24/127:45 a.m.SJU - BUF
2 stops16h 48mUnited Airlines
Deal found 16/12C$ 423
Tue 16/1212:35 p.m.BUF - SJU
1 stop9h 45mSouthwest
Wed 24/124:30 p.m.SJU - BUF
1 stop6h 30mSouthwest
Deal found 16/12C$ 546
Tue 23/126:00 a.m.BUF - SJU
1 stop8h 10mJetBlue
Sun 28/121:59 a.m.SJU - BUF
1 stop9h 36mJetBlue
Deal found 17/12C$ 608
Mon 22/1210:43 a.m.BUF - SJU
1 stop8h 44mFrontier
Mon 29/1210:33 a.m.SJU - BUF
1 stop11h 35mFrontier
Deal found 18/12C$ 612
Thu 18/126:30 a.m.BUF - SJU
2 stops12h 39mUnited Airlines
Fri 19/127:45 a.m.SJU - BUF
2 stops14h 09mUnited Airlines
Deal found 17/12C$ 628
Thu 18/126:30 a.m.BUF - SJU
2 stops12h 39mUnited Airlines
Sat 20/128:10 a.m.SJU - BUF
1 stop9h 44mUnited Airlines
Deal found 17/12C$ 632
Thu 18/125:35 p.m.BUF - SJU
2 stops11h 36mUnited Airlines
Wed 24/128:10 a.m.SJU - BUF
1 stop9h 44mUnited Airlines
Deal found 16/12C$ 701
Tue 23/126:10 a.m.BUF - SJU
1 stop7h 23mDelta
Mon 29/124:48 p.m.SJU - BUF
1 stop7h 40mDelta
Deal found 16/12C$ 716
Wed 31/121:55 p.m.BUF - SJU
1 stop6h 41mJetBlue
Thu 8/16:01 a.m.SJU - BUF
1 stop8h 11mJetBlue
Deal found 16/12C$ 767
Wed 31/121:55 p.m.BUF - SJU
1 stop6h 41mJetBlue
Fri 9/16:01 a.m.SJU - BUF
1 stop8h 11mJetBlue
Deal found 16/12C$ 769

Find flight deals from Buffalo to San Juan

Discover tips and strategies to find the most affordable flight options for your journey from Buffalo (BUF) to San Juan (PR1). 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 18 December 2025.

Round-trip from

C$ 314

One-way from

C$ 160

Popular in

December

Cheapest in

September

Average price

C$ 744
JetBlue
  • JetBlue
  • 4/4-10/4
  • 1 total stop
  • 11h 40m total
  • Buffalo to San Juan
Search Deals
American Airlines
  • American Airlines
  • 10/3
  • 2 total stops
  • 11h 19m total
  • Buffalo to San Juan
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 57 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Buffalo to San Juan 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 18 December 2025.
Use the filters below to find and compare flights from Buffalo to San Juan that are best for you.

Fly from

Buffalo

Fly to

San Juan

Route

Depart

Return

Price

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sat 4/4

6:00 a.m.-1:15 p.m.

1 stop7h 15m

San Juan Luis Munoz Marin Intl

Fri 10/4

6:20 p.m.-10:45 p.m.

Nonstop4h 25m

C$ 314

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Tue 3/2

10:25 a.m.-6:02 p.m.

1 stop6h 37m

San Juan Luis Munoz Marin Intl

Tue 10/2

1:00 p.m.-6:49 p.m.

1 stop6h 49m

C$ 331

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sun 1/3

12:14 p.m.-11:58 p.m.

1 stop10h 44m

San Juan Luis Munoz Marin Intl

Wed 11/3

7:30 a.m.-3:59 p.m.

1 stop8h 29m

C$ 335

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Mon 2/3

6:00 a.m.-5:17 p.m.

1 stop10h 17m

San Juan Luis Munoz Marin Intl

Wed 4/3

7:00 a.m.-2:56 p.m.

1 stop8h 56m

C$ 335

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Mon 2/3

7:30 p.m.-3:50 a.m.

1 stop7h 20m

San Juan Luis Munoz Marin Intl

Tue 10/3

10:59 p.m.-9:27 a.m.

1 stop10h 28m

C$ 340

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Mon 2/3

7:30 p.m.-3:50 a.m.

1 stop7h 20m

San Juan Luis Munoz Marin Intl

Wed 4/3

11:59 p.m.-9:28 a.m.

1 stop10h 29m

C$ 340

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sat 7/2

12:29 p.m.-11:59 p.m.

1 stop10h 30m

San Juan Luis Munoz Marin Intl

Sun 15/2

3:53 a.m.-10:07 a.m.

1 stop7h 14m

C$ 343

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Mon 2/3

7:30 p.m.-3:50 a.m.

1 stop7h 20m

San Juan Luis Munoz Marin Intl

Thu 12/3

5:10 a.m.-12:34 p.m.

1 stop7h 24m

C$ 349

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Tue 10/3

11:15 a.m.-10:34 p.m.

2 stops11h 19m

C$ 160

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Mon 19/1

3:25 p.m.-11:48 p.m.

1 stop7h 23m

C$ 165

Flights are sorted by cheapest round-trip flights first.

Deals found on 17/12

Showing 1-10 of 18 results
1
2

Best time to book a flight from Buffalo to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan 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

How far ahead should I book a flight from Buffalo to San Juan?

Use this chart to determine the optimal time to book a round-trip flight from Buffalo to San Juan. Price data was last updated on 12 December 2025.

Booking 72 days in advance of your planned departure date is, on average, the best time to get cheap flights from Buffalo to San Juan. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Buffalo to San Juan?

Currently, May is the cheapest month in which you can book a flight from Buffalo to San Juan (average of C$ 194). Flying from Buffalo to San Juan in December is currently the most expensive (average of C$ 360). 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 San Juan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 December 2025.

One of the essential ways to save on airfare from Buffalo to San Juan is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 14% on airfare.

Reviews of airlines servicing San Juan

Get insights into the airlines that provide service to San Juan. 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 San Juan. Reviews last updated 18 December 2025.
See what other customers who have flown with Southwest,Delta, andJetBlue from Buffalo to San Juan have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
7.9
Good
4,249 reviews
Check prices

Entertainment

7.5

Boarding

8.1

Overall

7.9

Food

7.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
7.9
Good
4,249 reviews
Southwest
7.9
Good
4,249 reviews
Check prices

Entertainment

7.5

Boarding

8.1

Overall

7.9

Food

7.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,006 reviews
Southwest
7.9
Good
4,249 reviews
Check prices

Entertainment

7.5

Boarding

8.1

Overall

7.9

Food

7.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
JetBlue
7.2
Good
2,895 reviews
Southwest
7.9
Good
4,249 reviews
Check prices

Entertainment

7.5

Boarding

8.1

Overall

7.9

Food

7.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.8
Fair
3,082 reviews
Southwest
7.9
Good
4,249 reviews
Check prices

Entertainment

7.5

Boarding

8.1

Overall

7.9

Food

7.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from Buffalo to San Juan. 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?

    For a flight from Buffalo to San Juan, you will be flying from Buffalo. Buffalo (BUF) is just 13.4 km from the centre of the city. Buffalo is the only Buffalo airport and it handles 0 outbound flights to San Juan per day. 4 airlines have flights to San Juan from Buffalo on a regular basis.

  • How long is the flight from Buffalo to San Juan?

    Airlines like JetBlue and Delta fly from Buffalo to San Juan in about 7h 15m. The time it takes to get you to your destination can typically vary by up to 3h 29m. Buffalo and San Juan are separated by a distance of 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 round-trip?

    Currently priced at C$ 165, Delta will fly you from Buffalo to San Juan and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Frontier and Southwest - these airlines can fly you to your destination from C$ 231 and C$ 310, respectively. Delta is currently priced 69% below the average price you’ll pay for this route.

  • Can I find deals for flights from Buffalo to San Juan that include hotel bookings?

    Yes. In addition to deals on Buffalo to San Juan flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Buffalo to San Juan?

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

  • Can I find deals for business class flights from Buffalo to San Juan?

    Yes. Cheapflights offers flight deals from Buffalo to San Juan 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?

    Currently, May is the cheapest month in which you can book a flight from Buffalo to San Juan (average of C$ 194). Flying from Buffalo to San Juan in December is currently the most expensive (average of C$ 360). 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

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.

Alternative routes for Buffalo to San Juan

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

Top 4 airlines flying from Buffalo to San Juan

Discover the top 4 airlines that operate flights from Buffalo to San Juan. 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 18 December 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 165AverageC$ 624FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
FrontierCheapestC$ 231AverageC$ 377FlexibilityNo cancel feeOn-time62%
Search Frontier flights
SouthwestCheapestC$ 310AverageC$ 688FlexibilityNo cancel feeOn-time63%
Search Southwest flights
JetBlueCheapestC$ 387AverageC$ 511FlexibilityNo 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 San Juan?

Cheapflights makes it easy to find Buffalo to San Juan flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Buffalo to San Juan?

Millions of users choose and trust Cheapflights to book the best flight deals from Buffalo to San Juan for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Buffalo to San Juan with no change fees?

Need flexible booking options for your flight to San Juan 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 San Juan become cheaper?

Yes! Start tracking prices for Buffalo to San Juan flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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.