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Cheap flights from Buffalo to San Juan from C$ 145

BUF — SJU
5 Dec — 12 Dec1
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

Tue 8/126:30 a.m. -
2 stops13h 54m
Tue 15/128:05 a.m. -
1 stop7h 15m
Deal found 3/11C$ 330
Tue 17/118:58 a.m. -
1 stop8h 39m
Sat 21/112:30 p.m. -
Nonstop4h 41m
Deal found 3/11C$ 338
Fri 4/129:05 a.m. -
Nonstop4h 53m
Sat 12/125:01 a.m. -
1 stop8h 46m
Deal found 4/11C$ 339
Mon 9/116:00 a.m. -
1 stop6h 32m
Tue 17/112:05 a.m. -
2 stops15h 57m
Deal found 2/11C$ 352
Mon 30/117:45 a.m. -
Nonstop4h 50m
Tue 15/122:04 p.m. -
1 stop7h 16m
Deal found 4/11C$ 353
Mon 7/1211:30 a.m. -
1 stop6h 57m
Sun 13/126:10 p.m. -
1 stop6h 47m
Deal found 5/11C$ 357
Fri 11/129:05 a.m. -
Nonstop4h 53m
Sun 13/126:10 p.m. -
1 stop6h 47m
Deal found 3/11C$ 363
Mon 16/116:35 a.m. -
1 stop6h 34m
Thu 19/116:10 p.m. -
1 stop6h 47m
Deal found 3/11C$ 366
Tue 10/1110:30 a.m. -
1 stop9h 30m
Tue 10/112:05 a.m. -
1 stop9h 03m
Deal found 3/11C$ 367
Sat 7/1110:51 a.m. -
2 stops10h 31m
Fri 13/112:05 a.m. -
2 stops12h 12m
Deal found 2/11C$ 374
Sat 5/123:30 p.m. -
1 stop6h 25m
Mon 7/126:40 a.m. -
1 stop10h 50m
Deal found 3/11C$ 377
Thu 12/1110:51 a.m. -
2 stops10h 31m
Thu 19/115:50 p.m. -
1 stop6h 54m
Deal found 4/11C$ 380

Find flight deals from Buffalo to San Juan

Round-trip from

C$ 330

One-way from

C$ 145

Popular in

December

Cheapest in

October

Average price

C$ 505
Southwest
  • Southwest
  • 8/12-15/12
  • 2 total stops
  • 18h 30m total
  • Buffalo to San Juan
Search Deals
JetBlue
  • JetBlue
  • 17/11-31/12
  • 1 total stop
  • 8h 39m total
  • Buffalo to San Juan
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 117 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2026
Search Deals

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Buffalo to San Juan that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BuffaloSan Juan

BUF Buffalo - SJU San Juan Luis Munoz Marin Intl

BUFSJU

Buffalo

Sun 24/1

3:53 p.m.-12:58 a.m.

1 stop8h 05m

San Juan Luis Munoz Marin Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 165
Quickest round-trip

BuffaloSan Juan

BUF Buffalo - SJU San Juan Luis Munoz Marin Intl

BUFSJU

Buffalo

Mon 1/2

5:10 p.m.-12:35 a.m.

1 stop6h 25m

San Juan Luis Munoz Marin Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 165

BuffaloSan Juan

BUF Buffalo - SJU San Juan Luis Munoz Marin Intl

BUFSJU

Buffalo

Tue 15/12

10:25 a.m.-6:24 p.m.

1 stop6h 59m

San Juan Luis Munoz Marin Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 176

BuffaloSan Juan

BUF Buffalo - SJU San Juan Luis Munoz Marin Intl

BUFSJU

Buffalo

Sat 20/2

1:56 p.m.-9:35 p.m.

1 stop6h 39m

San Juan Luis Munoz Marin Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 183

BuffaloSan Juan

BUF Buffalo - SJU San Juan Luis Munoz Marin Intl

BUFSJU

Buffalo

Wed 20/1

4:59 p.m.-1:54 a.m.

1 stop7h 55m

San Juan Luis Munoz Marin Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 184

BuffaloSan Juan

BUF Buffalo - SJU San Juan Luis Munoz Marin Intl

BUFSJU

Buffalo

Tue 10/11

10:30 a.m.-9:00 p.m.

1 stop9h 30m

San Juan Luis Munoz Marin Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 187

BuffaloSan Juan

BUF Buffalo - SJU San Juan Luis Munoz Marin Intl

BUFSJU

Buffalo

Tue 10/11

5:55 a.m.-1:30 p.m.

1 stop6h 35m

San Juan Luis Munoz Marin Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 194

BuffaloSan Juan

BUF Buffalo - SJU San Juan Luis Munoz Marin Intl

BUFSJU

Buffalo

Thu 28/1

12:20 p.m.-8:56 p.m.

1 stop7h 36m

San Juan Luis Munoz Marin Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 196

BuffaloSan Juan

BUF Buffalo - SJU San Juan Luis Munoz Marin Intl

BUFSJU

Buffalo

Mon 8/2

7:03 a.m.-9:00 p.m.

2 stops12h 57m

San Juan Luis Munoz Marin Intl

Fri 12/2

8:05 a.m.-2:18 p.m.

1 stop7h 13m

C$ 330

BuffaloSan Juan

BUF Buffalo - SJU San Juan Luis Munoz Marin Intl

BUFSJU

Buffalo

Sun 25/4

12:09 p.m.-8:20 p.m.

1 stop8h 11m

San Juan Luis Munoz Marin Intl

Wed 28/4

6:15 a.m.-1:16 p.m.

1 stop7h 01m

C$ 330

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/11

Showing 1-10 of 17 resultsSorted by cheapest first
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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

Cheapflights Insights

Everything you need to know about your flight from Buffalo to San Juan

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

Currently, October is the cheapest month in which you can book a flight from Buffalo to San Juan (average of C$ 416). Flying from Buffalo to San Juan in December is currently the most expensive (average of C$ 802). 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?

When flying from Buffalo to San Juan, 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?

Airfare is below average for this route at the moment.
Buffalo to San Juan flights typically cost between C$ 402 and C$ 686 in December.
The cheapest round-trip price found within the last 5 days was C$ 330 on Southwest (8 Dec-15 Dec).

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

Booking 87 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.

Reviews of airlines servicing San Juan

See what other customers who have flown with Southwest,JetBlue, andAmerican 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
4,211 reviews
Check prices

Crew

8.6

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Patricia,Oct 2026

DAL - TPA

I love flying southwest, Both flights were packed full full - so not room for all carry one and bags had to be checked but still good flights.
Southwest
8.0
Very good
4,211 reviews
Southwest
8.0
Very good
4,211 reviews
Check prices

Crew

8.6

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Patricia,Oct 2026

DAL - TPA

I love flying southwest, Both flights were packed full full - so not room for all carry one and bags had to be checked but still good flights.
JetBlue
7.1
Good
3,063 reviews
Southwest
8.0
Very good
4,211 reviews
Check prices

Crew

8.6

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Patricia,Oct 2026

DAL - TPA

I love flying southwest, Both flights were packed full full - so not room for all carry one and bags had to be checked but still good flights.
American Airlines
7.0
Good
12,231 reviews
Southwest
8.0
Very good
4,211 reviews
Check prices

Crew

8.6

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Patricia,Oct 2026

DAL - TPA

I love flying southwest, Both flights were packed full full - so not room for all carry one and bags had to be checked but still good flights.
Frontier
5.5
Fair
2,512 reviews
Southwest
8.0
Very good
4,211 reviews
Check prices

Crew

8.6

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Patricia,Oct 2026

DAL - TPA

I love flying southwest, Both flights were packed full full - so not room for all carry one and bags had to be checked but still good flights.

Related info for your journey

  • 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 United Airlines, Delta, and JetBlue fly from Buffalo to San Juan in about 7h 07m. The time it takes to get you to your destination can typically vary by up to 5h 50m. 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$ 203, American Airlines will fly you from Buffalo to San Juan and back. In addition to American Airlines, 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$ 240 and C$ 297, respectively. American Airlines is currently priced 62% 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, October is the cheapest month in which you can book a flight from Buffalo to San Juan (average of C$ 416). Flying from Buffalo to San Juan in December is currently the most expensive (average of C$ 802). 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

Alternative routes for Buffalo to San Juan

Buffalo to Luis Munoz Marin Intl flights
Newark to Luis Munoz Marin Intl flights
John F Kennedy Intl to Luis Munoz Marin Intl flights

Top 4 airlines flying from Buffalo to San Juan

AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 203AverageC$ 493FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
FrontierCheapestC$ 240AverageC$ 508FlexibilityNo cancel feeOn-time62%
Search Frontier flights
JetBlueCheapestC$ 297AverageC$ 511FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
SouthwestCheapestC$ 303AverageC$ 635FlexibilityNo cancel feeOn-time63%
Search Southwest flights

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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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