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Cheap flights from Buffalo to San Juan from C$ 97

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 29/1. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SJU
7 Dec — 14 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap 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 7 November 2025.

Round-trip from

C$ 368

One-way from

C$ 97

Popular in

December

Cheapest in

September

Average price

C$ 509
Frontier
  • Frontier
  • 11/1-24/1
  • 2 total stops
  • 40h 15m total
  • Buffalo to San Juan
Search Deals
Frontier
  • Frontier
  • 29/1
  • 1 total stop
  • 12h 37m total
  • Buffalo to San Juan
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (C$ 23 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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Find 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 7 November 2025.

Sat 6/126:29 p.m.BUF - SJU
1 stop8h 19mJetBlue
Wed 10/121:45 p.m.SJU - BUF
1 stop7h 45mJetBlue
Deal found 5/11C$ 398
Fri 12/1212:37 p.m.BUF - SJU
1 stop10h 39mMultiple Airlines
Wed 17/125:00 p.m.SJU - BUF
1 stop21h 12mMultiple Airlines
Deal found 5/11C$ 474
Sun 16/113:40 p.m.BUF - SJU
1 stop8h 45mSouthwest
Fri 21/1111:55 a.m.SJU - BUF
2 stops10h 55mSouthwest
Deal found 6/11C$ 480
Wed 10/123:00 p.m.BUF - SJU
1 stop6h 22mUnited Airlines
Fri 12/122:05 a.m.SJU - BUF
2 stops12h 07mUnited Airlines
Deal found 5/11C$ 482
Sat 8/113:57 p.m.BUF - SJU
1 stop8h 18mDelta
Mon 17/111:57 p.m.SJU - BUF
1 stop10h 53mDelta
Deal found 5/11C$ 497
Wed 5/113:40 p.m.BUF - SJU
1 stop6h 40mSouthwest
Wed 12/113:55 p.m.SJU - BUF
1 stop7h 30mSouthwest
Deal found 5/11C$ 516
Sat 6/123:03 p.m.BUF - SJU
1 stop6h 19mUnited Airlines
Mon 8/122:05 a.m.SJU - BUF
2 stops12h 07mUnited Airlines
Deal found 6/11C$ 518
Fri 12/1210:50 a.m.BUF - SJU
2 stops10h 30mSouthwest
Wed 17/125:45 a.m.SJU - BUF
2 stops9h 35mSouthwest
Deal found 5/11C$ 537
Mon 10/112:20 p.m.BUF - SJU
2 stops9h 15mSouthwest
Fri 14/118:45 p.m.SJU - BUF
1 stop13h 45mSouthwest
Deal found 5/11C$ 546

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 7 November 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

Wed 22/4

3:20 p.m.-10:47 p.m.

1 stop7h 27m

San Juan Luis Munoz Marin Intl

Mon 4/5

8:10 a.m.-6:44 p.m.

1 stop10h 34m

C$ 395

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Thu 23/4

7:26 p.m.-1:47 a.m.

1 stop6h 21m

San Juan Luis Munoz Marin Intl

Thu 30/4

8:10 a.m.-3:10 p.m.

1 stop7h 00m

C$ 395

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Thu 23/4

3:20 p.m.-10:47 p.m.

1 stop7h 27m

San Juan Luis Munoz Marin Intl

Mon 4/5

3:30 a.m.-11:29 a.m.

1 stop7h 59m

C$ 395

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sat 25/4

7:26 p.m.-2:55 a.m.

1 stop7h 29m

San Juan Luis Munoz Marin Intl

Sat 2/5

8:10 a.m.-3:10 p.m.

1 stop7h 00m

C$ 395

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Wed 22/4

12:50 p.m.-10:47 p.m.

1 stop9h 57m

San Juan Luis Munoz Marin Intl

Tue 5/5

3:00 p.m.-11:55 p.m.

1 stop8h 55m

C$ 395

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Fri 24/4

12:50 p.m.-10:47 p.m.

1 stop9h 57m

San Juan Luis Munoz Marin Intl

Wed 29/4

3:30 a.m.-11:29 a.m.

1 stop7h 59m

C$ 395

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Fri 24/4

12:50 p.m.-8:20 p.m.

1 stop7h 30m

San Juan Luis Munoz Marin Intl

Sun 3/5

3:30 a.m.-11:29 a.m.

1 stop7h 59m

C$ 395

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sun 26/4

12:50 p.m.-10:47 p.m.

1 stop9h 57m

San Juan Luis Munoz Marin Intl

Mon 4/5

3:30 a.m.-11:29 a.m.

1 stop7h 59m

C$ 395

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Thu 23/4

7:26 p.m.-1:47 a.m.

1 stop6h 21m

San Juan Luis Munoz Marin Intl

Sat 2/5

6:00 a.m.-3:10 p.m.

1 stop9h 10m

C$ 395

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Wed 22/4

7:26 p.m.-1:47 a.m.

1 stop6h 21m

San Juan Luis Munoz Marin Intl

Wed 29/4

3:30 a.m.-11:29 a.m.

1 stop7h 59m

C$ 395

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 22 results
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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 31 October 2025.

Booking 44 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$ 199). Flying from Buffalo to San Juan in June is currently the most expensive (average of C$ 358). 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 7 November 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 17% 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 7 November 2025.
See what other customers who have flown with Southwest,Delta, andUnited Airlines 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
8.0
Very good
4,241 reviews
Check prices

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,241 reviews
Southwest
8.0
Very good
4,241 reviews
Check prices

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
7.9
Good
8,000 reviews
Southwest
8.0
Very good
4,241 reviews
Check prices

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
9,007 reviews
Southwest
8.0
Very good
4,241 reviews
Check prices

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
JetBlue
7.2
Good
2,907 reviews
Southwest
8.0
Very good
4,241 reviews
Check prices

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,116 reviews
Southwest
8.0
Very good
4,241 reviews
Check prices

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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. 5 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 fly from Buffalo to San Juan in about 7h 27m. The time it takes to get you to your destination can typically vary by up to . Buffalo and San Juan are separated by a distance of 2974 km.

  • What are the cheapest airlines flying from Buffalo to San Juan round-trip?

    Currently priced at C$ 169, 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 JetBlue - these airlines can fly you to your destination from C$ 237 and C$ 396, respectively. Delta is currently priced 69% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Buffalo to San Juan one-way?

    C$ 97 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Delta and Southwest, with prices starting from C$ 159 and C$ 159, respectively.

  • 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$ 199). Flying from Buffalo to San Juan in June is currently the most expensive (average of C$ 358). 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

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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 5 airlines flying from Buffalo to San Juan

Discover the top 5 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 7 November 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 169AverageC$ 639FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
FrontierCheapestC$ 237AverageC$ 391FlexibilityNo cancel feeOn-time62%
Search Frontier flights
JetBlueCheapestC$ 396AverageC$ 592FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
SouthwestCheapestC$ 401AverageC$ 709FlexibilityNo cancel feeOn-time63%
Search Southwest flights
United AirlinesCheapestC$ 532AverageC$ 872FlexibilityNo cancel feeOn-time69%
Search United Airlines 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.

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