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Cheap flights from Buffalo to San Juan from C$ 163

BUF — SJU
5 Oct — 12 Oct1
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 29/96:30 a.m. -
1 stop7h 15m
Tue 6/101:25 p.m. -
2 stops10h 25m
Deal found 1/9C$ 351
Fri 2/105:45 p.m. -
1 stop6h 20m
Thu 8/105:35 p.m. -
1 stop6h 10m
Deal found 1/9C$ 365
Fri 25/93:55 p.m. -
1 stop7h 00m
Sat 26/95:55 a.m. -
1 stop11h 45m
Deal found 1/9C$ 366
Sat 26/93:30 p.m. -
1 stop6h 30m
Sat 3/105:40 a.m. -
1 stop6h 15m
Deal found 2/9C$ 373
Sat 24/1010:46 a.m. -
2 stops13h 04m
Sat 31/106:40 a.m. -
2 stops14h 11m
Deal found 31/8C$ 376
Sat 3/103:53 p.m. -
1 stop7h 56m
Tue 6/106:45 a.m. -
1 stop8h 26m
Deal found 1/9C$ 392
Fri 30/106:00 a.m. -
1 stop7h 40m
Mon 2/118:25 a.m. -
1 stop9h 37m
Deal found 31/8C$ 399
Mon 26/106:00 a.m. -
1 stop6h 15m
Sat 7/117:40 a.m. -
2 stops14h 11m
Deal found 5/9C$ 401
Fri 4/1211:50 a.m. -
2 stops21h 54m
Sat 12/128:30 a.m. -
1 stop10h 44m
Deal found 1/9C$ 402
Sat 24/107:00 a.m. -
1 stop7h 44m
Fri 30/101:35 p.m. -
2 stops10h 11m
Deal found 2/9C$ 403
Fri 16/108:15 a.m. -
Nonstop4h 39m
Fri 16/106:15 p.m. -
Nonstop4h 35m
Deal found 1/9C$ 408
Sat 3/1010:46 a.m. -
2 stops13h 04m
Tue 6/101:25 p.m. -
2 stops10h 25m
Deal found 1/9C$ 409

Find flight deals from Buffalo to San Juan

Round-trip from

C$ 292

One-way from

C$ 163

Popular in

December

Cheapest in

October

Average price

C$ 515
American Airlines
  • American Airlines
  • 29/1-13/2
  • 4 total stops
  • 19h 44m total
  • Buffalo to San Juan
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United Airlines
  • United Airlines
  • 30/9-31/12
  • 1 total stop
  • 7h 15m total
  • Buffalo to San Juan
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 116 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 September 2026
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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

Wed 30/9

6:30 a.m.-1:45 p.m.

1 stop7h 15m

San Juan Luis Munoz Marin Intl

Wed 31/12

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

Nonstop0h 00m

C$ 163

BuffaloSan Juan

BUF Buffalo - SJU San Juan Luis Munoz Marin Intl

BUFSJU

Buffalo

Fri 2/10

5:45 p.m.-12:05 a.m.

1 stop6h 20m

San Juan Luis Munoz Marin Intl

Wed 31/12

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

Nonstop0h 00m

C$ 188

BuffaloSan Juan

BUF Buffalo - SJU San Juan Luis Munoz Marin Intl

BUFSJU

Buffalo

Sat 31/10

6:00 a.m.-2:40 p.m.

1 stop8h 40m

San Juan Luis Munoz Marin Intl

Wed 31/12

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

Nonstop0h 00m

C$ 188

BuffaloSan Juan

BUF Buffalo - SJU San Juan Luis Munoz Marin Intl

BUFSJU

Buffalo

Fri 30/10

8:00 a.m.-12:50 p.m.

Nonstop4h 50m

San Juan Luis Munoz Marin Intl

Wed 31/12

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

Nonstop0h 00m

C$ 191

BuffaloSan Juan

BUF Buffalo - SJU San Juan Luis Munoz Marin Intl

BUFSJU

Buffalo

Sat 3/10

11:05 a.m.-3:46 p.m.

Nonstop4h 41m

San Juan Luis Munoz Marin Intl

Wed 31/12

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

Nonstop0h 00m

C$ 204

BuffaloSan Juan

BUF Buffalo - SJU San Juan Luis Munoz Marin Intl

BUFSJU

Buffalo

Mon 2/11

8:15 a.m.-2:05 p.m.

Nonstop4h 50m

San Juan Luis Munoz Marin Intl

Wed 31/12

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

Nonstop0h 00m

C$ 204
Quickest round-trip

BuffaloSan Juan

BUF Buffalo - SJU San Juan Luis Munoz Marin Intl

BUFSJU

Buffalo

Mon 19/10

8:15 a.m.-12:54 p.m.

Nonstop4h 39m

San Juan Luis Munoz Marin Intl

Wed 31/12

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

Nonstop0h 00m

C$ 204

BuffaloSan Juan

BUF Buffalo - SJU San Juan Luis Munoz Marin Intl

BUFSJU

Buffalo

Sat 7/11

7:00 a.m.-4:56 p.m.

1 stop8h 56m

San Juan Luis Munoz Marin Intl

Wed 31/12

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

Nonstop0h 00m

C$ 210

BuffaloSan Juan

BUF Buffalo - SJU San Juan Luis Munoz Marin Intl

BUFSJU

Buffalo

Sat 24/10

10:46 a.m.-11:50 p.m.

2 stops13h 04m

San Juan Luis Munoz Marin Intl

Sat 31/10

6:40 a.m.-8:51 p.m.

2 stops14h 11m

C$ 376

BuffaloSan Juan

BUF Buffalo - SJU San Juan Luis Munoz Marin Intl

BUFSJU

Buffalo

Sat 3/10

3:53 p.m.-11:49 p.m.

1 stop7h 56m

San Juan Luis Munoz Marin Intl

Tue 6/10

6:45 a.m.-3:11 p.m.

1 stop8h 26m

C$ 392

Flights are sorted by cheapest round-trip flights first.

Deals found on 31/8

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$ 461). Flying from Buffalo to San Juan in December is currently the most expensive (average of C$ 803). 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$ 387 and C$ 566 in January.
The cheapest round-trip price found within the last 5 days was C$ 292 on American Airlines (29 Jan-13 Feb).

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,American Airlines, 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
8.0
Very good
4,200 reviews
Check prices

Boarding

8.1

Overall

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Courtney,Sep 2026

DEN - STL

I still think the aircraft should load from the back and window seats first for all passengers. It's so much easier and efficient to board when you do not have to worry about hitting Anyone already seated.
Southwest
8.0
Very good
4,200 reviews
Southwest
8.0
Very good
4,200 reviews
Check prices

Boarding

8.1

Overall

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Courtney,Sep 2026

DEN - STL

I still think the aircraft should load from the back and window seats first for all passengers. It's so much easier and efficient to board when you do not have to worry about hitting Anyone already seated.
American Airlines
7.1
Good
12,045 reviews
Southwest
8.0
Very good
4,200 reviews
Check prices

Boarding

8.1

Overall

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Courtney,Sep 2026

DEN - STL

I still think the aircraft should load from the back and window seats first for all passengers. It's so much easier and efficient to board when you do not have to worry about hitting Anyone already seated.
JetBlue
7.1
Good
3,045 reviews
Southwest
8.0
Very good
4,200 reviews
Check prices

Boarding

8.1

Overall

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Courtney,Sep 2026

DEN - STL

I still think the aircraft should load from the back and window seats first for all passengers. It's so much easier and efficient to board when you do not have to worry about hitting Anyone already seated.
Frontier
5.6
Fair
2,622 reviews
Southwest
8.0
Very good
4,200 reviews
Check prices

Boarding

8.1

Overall

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Courtney,Sep 2026

DEN - STL

I still think the aircraft should load from the back and window seats first for all passengers. It's so much easier and efficient to board when you do not have to worry about hitting Anyone already seated.

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 4h 45m. The time it takes to get you to your destination can typically vary by up to 8h 19m. 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$ 201, 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$ 237 and C$ 294, respectively. American Airlines is currently priced 62% below the average price you’ll pay for this route.

  • What are the cheapest flights from Buffalo to San Juan?

    Looking for the cheapest flight from Buffalo to San Juan? While on average our users pay C$ 497, our data indicates the cheapest price to be C$ 204. The most popular route (Buffalo - San Juan Luis Munoz Marin Intl), is priced around C$ 681.

  • 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$ 461). Flying from Buffalo to San Juan in December is currently the most expensive (average of C$ 803). 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

Newark to Luis Munoz Marin Intl flights
Buffalo 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$ 201AverageC$ 488FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
FrontierCheapestC$ 237AverageC$ 503FlexibilityNo cancel feeOn-time62%
Search Frontier flights
JetBlueCheapestC$ 294AverageC$ 494FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
SouthwestCheapestC$ 300AverageC$ 645FlexibilityNo 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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