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Cheap flights from Buffalo to San Juan from C$ 152

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Buffalo to San Juan departing on 12/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Buffalo to San Juan

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
6:30 a.m. - 9:24 p.m.BUF  Buffalo-SJU San Juan Luis Munoz Marin Intl
13h 54m2 stops Chicago O'Hare Intl Houston George Bush Intcntl
United Airlines Logo
2:05 a.m. - 10:08 a.m.SJU  San Juan Luis Munoz Marin Intl-BUF Buffalo
9h 03m1 stop Newark
C$ 408United Airlines
Tue, 3 Nov - Fri, 6 Nov
United Airlines Logo
6:00 a.m. - 1:53 p.m.BUF  Buffalo-SJU San Juan Luis Munoz Marin Intl
7h 53m1 stop Newark
United Airlines Logo
4:55 p.m. - 11:50 p.m.SJU  San Juan Luis Munoz Marin Intl-BUF Buffalo
6h 55m1 stop Washington, D.C. Dulles Intl
C$ 412United Airlines
Tue, 22 Sep - Thu, 24 Sep
American Airlines Logo
7:42 p.m. - 1:03 p.m.BUF  Buffalo-SJU San Juan Luis Munoz Marin Intl
16h 21m1 stop Charlotte Douglas
American Airlines Logo
6:28 a.m. - 3:50 p.m.SJU  San Juan Luis Munoz Marin Intl-BUF Buffalo
10h 22m1 stop Dallas/Fort Worth
C$ 414American Airlines
Fri, 6 Nov - Wed, 18 Nov
Southwest Logo
5:30 p.m. - 1:05 a.m.BUF  Buffalo-SJU San Juan Luis Munoz Marin Intl
6h 35m1 stop Baltimore/Washington
Southwest Logo
6:40 a.m. - 12:05 p.m.SJU  San Juan Luis Munoz Marin Intl-BUF Buffalo
6h 25m1 stop Baltimore/Washington
C$ 428Southwest
Fri, 6 Nov - Tue, 10 Nov
Southwest Logo
4:35 p.m. - 11:55 p.m.BUF  Buffalo-SJU San Juan Luis Munoz Marin Intl
7h 20m1 stop Orlando
Southwest Logo
5:55 a.m. - 4:45 p.m.SJU  San Juan Luis Munoz Marin Intl-BUF Buffalo
10h 50m2 stops Baltimore/Washington Orlando
C$ 428Southwest
Mon, 14 Sep - Sat, 19 Sep
JetBlue Logo
7:00 a.m. - 11:40 a.m.BUF  Buffalo-SJU San Juan Luis Munoz Marin Intl
4h 40mdirect
JetBlue Logo
6:20 p.m. - 10:58 p.m.SJU  San Juan Luis Munoz Marin Intl-BUF Buffalo
4h 38mdirect
C$ 447JetBlue
Sat, 29 Aug - Sat, 5 Sep
American Airlines Logo
1:03 p.m. - 10:24 p.m.BUF  Buffalo-SJU San Juan Luis Munoz Marin Intl
9h 21m1 stop Philadelphia
American Airlines Logo
7:30 a.m. - 5:29 p.m.SJU  San Juan Luis Munoz Marin Intl-BUF Buffalo
9h 59m2 stops Charlotte Douglas New York LaGuardia
C$ 449American Airlines
Wed, 26 Aug - Tue, 1 Sep
JetBlue Logo
11:05 a.m. - 3:46 p.m.BUF  Buffalo-SJU San Juan Luis Munoz Marin Intl
4h 41mdirect
JetBlue Logo
6:15 p.m. - 10:50 p.m.SJU  San Juan Luis Munoz Marin Intl-BUF Buffalo
4h 35mdirect
C$ 452JetBlue
Sat, 3 Oct - Sat, 10 Oct
Frontier Logo
1:13 p.m. - 4:25 p.m.BUF  Buffalo-SJU San Juan Luis Munoz Marin Intl
26h 12m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
6:12 p.m. - 12:18 p.m.SJU  San Juan Luis Munoz Marin Intl-BUF Buffalo
19h 06m2 stops Fort Lauderdale Atlanta Hartsfield-Jackson
C$ 468Frontier
Fri, 6 Nov - Wed, 18 Nov
Frontier Logo
1:13 p.m. - 4:25 p.m.BUF  Buffalo-SJU San Juan Luis Munoz Marin Intl
26h 12m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
6:12 p.m. - 12:18 p.m.SJU  San Juan Luis Munoz Marin Intl-BUF Buffalo
19h 06m2 stops Fort Lauderdale Atlanta Hartsfield-Jackson
C$ 488Frontier
Fri, 6 Nov - Wed, 18 Nov

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JetBlue flights from Buffalo to San Juan Luis Munoz Marin Intl Airport

Our best JetBlue deals on Buffalo to San Juan Luis Munoz Marin Intl Airport flight tickets
JetBlue
29 Aug
BUF7:00 a.m.Buffalo
4h 40m
SJU11:40 a.m.San Juan Luis Munoz Marin Intl
5 Sep
SJU6:20 p.m.San Juan Luis Munoz Marin Intl
4h 38m
BUF10:58 p.m.Buffalo
C$ 447
JetBlue
3 Oct
BUF11:05 a.m.Buffalo
4h 41m
SJU3:46 p.m.San Juan Luis Munoz Marin Intl
10 Oct
SJU6:15 p.m.San Juan Luis Munoz Marin Intl
4h 35m
BUF10:50 p.m.Buffalo
C$ 452
JetBlue
12 Sep
BUF11:05 a.m.Buffalo
4h 41m
SJU3:46 p.m.San Juan Luis Munoz Marin Intl
14 Sep
SJU11:15 a.m.San Juan Luis Munoz Marin Intl
9h 04m
1 stop
BUF8:19 p.m.Buffalo
C$ 454

Southwest flights from Buffalo to San Juan Luis Munoz Marin Intl Airport

Our best Southwest deals on Buffalo to San Juan Luis Munoz Marin Intl Airport flight tickets
Southwest
14 Sep
BUF4:35 p.m.Buffalo
7h 20m
1 stop
SJU11:55 p.m.San Juan Luis Munoz Marin Intl
19 Sep
SJU5:55 a.m.San Juan Luis Munoz Marin Intl
10h 50m
2 stops
BUF4:45 p.m.Buffalo
C$ 428
Southwest
18 Sep
BUF1:40 p.m.Buffalo
9h 30m
1 stop
SJU11:10 p.m.San Juan Luis Munoz Marin Intl
22 Sep
SJU2:25 p.m.San Juan Luis Munoz Marin Intl
6h 45m
1 stop
BUF9:10 p.m.Buffalo
C$ 440
Southwest
6 Nov
BUF3:05 p.m.Buffalo
8h 50m
2 stops
SJU12:55 a.m.San Juan Luis Munoz Marin Intl
10 Nov
SJU6:40 a.m.San Juan Luis Munoz Marin Intl
6h 25m
1 stop
BUF12:05 p.m.Buffalo
C$ 457

momondo Fare Finder

 
Customize your flight search to find flights from Buffalo to San Juan Luis Munoz Marin Intl Airport 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, momondo users made 96,600 searches. Data last updated 7 August 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 Buffalo - SJU San Juan Luis Munoz Marin Intl

BUFSJU

Buffalo

Tue 3/11

6:30 a.m.-9:24 p.m.

2 stops13h 54m

San Juan Luis Munoz Marin Intl

Fri 6/11

2:05 a.m.-10:08 a.m.

1 stop9h 03m

C$ 408

BuffaloSan Juan

BUF Buffalo - SJU San Juan Luis Munoz Marin Intl

BUFSJU

Buffalo

Tue 22/9

6:00 a.m.-1:53 p.m.

1 stop7h 53m

San Juan Luis Munoz Marin Intl

Thu 24/9

4:55 p.m.-11:50 p.m.

1 stop6h 55m

C$ 412

BuffaloSan Juan

BUF Buffalo - SJU San Juan Luis Munoz Marin Intl

BUFSJU

Buffalo

Fri 6/11

7:42 p.m.-1:03 p.m.

1 stop16h 21m

San Juan Luis Munoz Marin Intl

Wed 18/11

6:28 a.m.-3:50 p.m.

1 stop10h 22m

C$ 414

BuffaloSan Juan

BUF Buffalo - SJU San Juan Luis Munoz Marin Intl

BUFSJU

Buffalo

Fri 6/11

5:30 p.m.-1:05 a.m.

1 stop6h 35m

San Juan Luis Munoz Marin Intl

Tue 10/11

6:40 a.m.-12:05 p.m.

1 stop6h 25m

C$ 428

BuffaloSan Juan

BUF Buffalo - SJU San Juan Luis Munoz Marin Intl

BUFSJU

Buffalo

Mon 14/9

4:35 p.m.-11:55 p.m.

1 stop7h 20m

San Juan Luis Munoz Marin Intl

Sat 19/9

5:55 a.m.-4:45 p.m.

2 stops10h 50m

C$ 428

BuffaloSan Juan

BUF Buffalo - SJU San Juan Luis Munoz Marin Intl

BUFSJU

Buffalo

Sat 29/8

7:00 a.m.-11:40 a.m.

Nonstop4h 40m

San Juan Luis Munoz Marin Intl

Sat 5/9

6:20 p.m.-10:58 p.m.

Nonstop4h 38m

C$ 447

BuffaloSan Juan

BUF Buffalo - SJU San Juan Luis Munoz Marin Intl

BUFSJU

Buffalo

Wed 26/8

1:03 p.m.-10:24 p.m.

1 stop9h 21m

San Juan Luis Munoz Marin Intl

Tue 1/9

7:30 a.m.-5:29 p.m.

2 stops9h 59m

C$ 449
Quickest round-trip

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

Sat 10/10

6:15 p.m.-10:50 p.m.

Nonstop4h 35m

C$ 452

BuffaloSan Juan

BUF Buffalo - SJU San Juan Luis Munoz Marin Intl

BUFSJU

Buffalo

Fri 6/11

1:13 p.m.-4:25 p.m.

1 stop26h 12m

San Juan Luis Munoz Marin Intl

Wed 18/11

6:12 p.m.-12:18 p.m.

2 stops19h 06m

C$ 468

BuffaloSan Juan

BUF Buffalo - SJU San Juan Luis Munoz Marin Intl

BUFSJU

Buffalo

Fri 6/11

1:13 p.m.-4:25 p.m.

1 stop26h 12m

San Juan Luis Munoz Marin Intl

Wed 18/11

6:12 p.m.-12:18 p.m.

2 stops19h 06m

C$ 488

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Buffalo to San Juan Luis Munoz Marin Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Buffalo and San Juan Luis Munoz Marin Intl Airport?

Prices are currently low for flights on this route.

Typical prices usually range from C$ 459 to C$ 607.
The lowest price recently found on this route was C$ 408.

What is the cheapest month to fly to San Juan Luis Munoz Marin Intl Airport?

The month of March is, on average, the cheapest month to fly to San Juan Luis Munoz Marin Intl Airport from Buffalo, with most prices found around C$ 474. If you don’t want to visit San Juan Luis Munoz Marin Intl Airport in March, then you should wait until April to fly from Buffalo, when ticket prices are also cheap, with an average price of C$ 489.

What is the cheapest day to depart on your flight to San Juan Luis Munoz Marin Intl Airport?

The cheapest day to depart on your flight to San Juan Luis Munoz Marin Intl Airport is on a Monday when prices can be found for as low as C$ 462. This is often the case because there is less demand to fly during this day of the week. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Buffalo to San Juan Luis Munoz Marin Intl Airport for around C$ 554.

What is the cheapest Buffalo to San Juan Luis Munoz Marin Intl flight route?

Fly from Buffalo to San Juan Luis Munoz Marin Intl for the best Buffalo - San Juan Luis Munoz Marin Intl flight prices

How far in advance should I book a flight from Buffalo to San Juan Luis Munoz Marin Intl Airport?

You are more likely to see cheaper flights to San Juan Luis Munoz Marin Intl Airport from Buffalo when booking weeks ahead of your departure date. In general, you can expect to find flights to San Juan Luis Munoz Marin Intl Airport for around C$ 537 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Juan Luis Munoz Marin Intl Airport from Buffalo for as low as C$ 477 on momondo.

What cabin class options are available on Buffalo to San Juan Luis Munoz Marin Intl Airport flights?

There are 2 cabin classes available to choose from on Buffalo to San Juan Luis Munoz Marin Intl Airport flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Buffalo to San Juan Luis Munoz Marin Intl Airport flights?

You could potentially save up to 39% on your flight if you consider stops on a Buffalo to San Juan Luis Munoz Marin Intl Airport flight.

How have Buffalo to San Juan Luis Munoz Marin Intl Airport flight prices changed over time?

As of August 2026, prices for Buffalo to San Juan Luis Munoz Marin Intl Airport flights are approximately 15% more expensive when compared to flights at the same time last year.

When to book flights from Buffalo to San Juan Luis Munoz Marin Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Buffalo to San Juan Luis Munoz Marin Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Buffalo to San Juan Luis Munoz Marin Intl Airport (BUF to SJU) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Buffalo to San Juan Luis Munoz Marin Intl Airport

Best price found

C$ 461

Fastest flight time

3h 15m

Direct flights

Tue, Thu, Sat and Sun
The best flight deal from Buffalo to San Juan Luis Munoz Marin Intl Airport found on momondo in the last 72 hours is C$ 461
The fastest flight from Buffalo to San Juan Luis Munoz Marin Intl Airport takes 3h 15m
Direct flights go from Buffalo to San Juan Luis Munoz Marin Intl Airport on Tuesday, Thursday, Saturday and Sunday. There are no airlines offering direct flights.
Search flight deals

Frequently asked questions about flying from Buffalo to San Juan Luis Munoz Marin Intl Airport

  • How far is Buffalo to San Juan Luis Munoz Marin Intl by plane?

    San Juan Luis Munoz Marin Intl is 2974.1 km away from Buffalo. Typically, this will take 3h 15m by plane in normal conditions.

  • When did momondo last update prices for flights from Buffalo Airport to San Juan Luis Munoz Marin Intl Airport?

    Prices for flights from Buffalo Airport to San Juan Luis Munoz Marin Intl Airport were last updated today.

  • How many operators does momondo search for flights from Buffalo Airport to San Juan Luis Munoz Marin Intl Airport?

  • How old do you have to be to fly from Buffalo Airport to San Juan Luis Munoz Marin Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Buffalo Airport to San Juan Luis Munoz Marin Intl Airport.

  • What documentation or ID do you need to fly to San Juan Luis Munoz Marin Intl Airport?

    The travel and health documents you'll need for your trip to San Juan Luis Munoz Marin Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Juan Luis Munoz Marin Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Buffalo to San Juan Luis Munoz Marin Intl Airport?

  • What is the most popular airline from Buffalo to San Juan Luis Munoz Marin Intl Airport?

Best airlines flying from Buffalo to San Juan Luis Munoz Marin Intl Airport

Compare and see reviews for airlines that fly from Buffalo to San Juan Luis Munoz Marin Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom C$ 204Free CancellationRating
7.1
11,874 reviews
Search American Airlines flights
FrontierPriceFrom C$ 240Free CancellationRating
5.6
2,722 reviews
Search Frontier flights
JetBluePriceFrom C$ 297Free CancellationRating
7.1
3,025 reviews
Search JetBlue flights
SouthwestPriceFrom C$ 315Free CancellationRating
8.0
4,216 reviews
Search Southwest flights

Travelling to a place near San Juan?

Book flights to San Juan if you plan to visit one of these locations
Carolina
Rio Grande
Humacao
Dorado
Fajardo

Why use momondo?

Why should I use momondo to find a flight deal from Buffalo to San Juan?

Finding the right flight to San Juan from Buffalo is quick and easy when you have a range of options in front of you, from reputable agents and recognizable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San Juan quick and easy, saving you time and money.

Can I find flights from Buffalo to San Juan with flexible booking policies on momondo?

momondo does allow users to show only those flights to San Juan from Buffalo which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Buffalo to San Juan?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to San Juan from Buffalo.

I’m not ready to book a flight from Buffalo to San Juan right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Buffalo to San Juan flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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