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Cheap flights from Buffalo to San Juan from C$ 166

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 17/1. 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

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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.
JetBlue Logo
7:30 p.m. - 3:50 a.m.
BUF
-
SJU
7h 20m1 stop
JetBlue Logo
6:10 a.m. - 2:08 p.m.
SJU
-
BUF
8h 58m1 stop
C$ 312JetBlue
Mon, 2 Mar - Wed, 4 Mar
United Airlines Logo
11:00 a.m. - 9:00 p.m.
BUF
-
SJU
9h 00m1 stop
United Airlines Logo
2:05 a.m. - 1:24 p.m.
SJU
-
BUF
12h 19m2 stops
C$ 315United Airlines
Wed, 4 Feb - Tue, 10 Feb
Southwest Logo
12:20 p.m. - 11:10 p.m.
BUF
-
SJU
9h 50m1 stop
Southwest Logo
6:10 a.m. - 12:30 p.m.
SJU
-
BUF
7h 20m1 stop
C$ 330Southwest
Thu, 22 Jan - Wed, 4 Feb
JetBlue Logo
3:25 p.m. - 11:48 p.m.
BUF
-
SJU
7h 23m1 stop
JetBlue Logo
6:15 a.m. - 2:30 p.m.
SJU
-
BUF
9h 15m1 stop
C$ 331JetBlue
Mon, 12 Jan - Thu, 15 Jan
United Airlines Logo
2:49 p.m. - 10:22 p.m.
BUF
-
SJU
6h 33m1 stop
United Airlines Logo
7:45 a.m. - 8:29 p.m.
SJU
-
BUF
13h 44m2 stops
C$ 333United Airlines
Sat, 17 Jan - Sat, 24 Jan
Delta Logo
12:13 p.m. - 11:45 p.m.
BUF
-
SJU
10h 32m1 stop
Delta Logo
6:05 p.m. - 12:16 a.m.
SJU
-
BUF
7h 11m1 stop
C$ 335Delta
Fri, 23 Jan - Thu, 5 Feb
JetBlue Logo
7:30 p.m. - 3:50 a.m.
BUF
-
SJU
7h 20m1 stop
JetBlue Logo
3:05 p.m. - 11:33 p.m.
SJU
-
BUF
9h 28m1 stop
C$ 341JetBlue
Mon, 2 Mar - Wed, 4 Mar
Frontier Logo
12:29 p.m. - 11:59 p.m.
BUF
-
SJU
10h 30m1 stop
Frontier Logo
3:53 a.m. - 10:02 a.m.
SJU
-
BUF
7h 09m1 stop
C$ 344Frontier
Sat, 7 Feb - Sun, 15 Feb
JetBlue Logo
7:45 p.m. - 11:50 p.m.
BUF
-
SJU
27h 05m1 stop
JetBlue Logo
6:01 a.m. - 2:30 p.m.
SJU
-
BUF
9h 29m1 stop
C$ 349JetBlue
Fri, 23 Jan - Thu, 29 Jan
JetBlue Logo
3:25 p.m. - 11:48 p.m.
BUF
-
SJU
7h 23m1 stop
JetBlue Logo
2:20 p.m. - 11:47 p.m.
SJU
-
BUF
10h 27m1 stop
C$ 360JetBlue
Mon, 12 Jan - Wed, 14 Jan

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
2 Mar
BUF7:30 p.m.Buffalo
7h 20m
1 stop
SJU3:50 a.m.San Juan Luis Munoz Marin Intl
4 Mar
SJU6:10 a.m.San Juan Luis Munoz Marin Intl
8h 58m
1 stop
BUF2:08 p.m.Buffalo
C$ 310
Find similar
JetBlue
2 Mar
BUF7:30 p.m.Buffalo
7h 20m
1 stop
SJU3:50 a.m.San Juan Luis Munoz Marin Intl
4 Mar
SJU6:10 a.m.San Juan Luis Munoz Marin Intl
8h 58m
1 stop
BUF2:08 p.m.Buffalo
C$ 312
Find similar
JetBlue
12 Jan
BUF3:25 p.m.Buffalo
7h 23m
1 stop
SJU11:48 p.m.San Juan Luis Munoz Marin Intl
15 Jan
SJU6:15 a.m.San Juan Luis Munoz Marin Intl
9h 15m
1 stop
BUF2:30 p.m.Buffalo
C$ 331
Find similar

American Airlines flights from Buffalo to San Juan Luis Munoz Marin Intl Airport

Our best American Airlines deals on Buffalo to San Juan Luis Munoz Marin Intl Airport flight tickets
American Airlines
20 Jan
BUF6:00 a.m.Buffalo
9h 30m
1 stop
SJU4:30 p.m.San Juan Luis Munoz Marin Intl
27 Jan
SJU6:00 a.m.San Juan Luis Munoz Marin Intl
10h 34m
2 stops
BUF3:34 p.m.Buffalo
C$ 319
Find similar
American Airlines
23 Jan
BUF12:38 p.m.Buffalo
10h 18m
2 stops
SJU11:56 p.m.San Juan Luis Munoz Marin Intl
29 Jan
SJU6:00 a.m.San Juan Luis Munoz Marin Intl
10h 34m
2 stops
BUF3:34 p.m.Buffalo
C$ 400
Find similar
American Airlines
13 Jan
BUF5:12 a.m.Buffalo
9h 47m
2 stops
SJU3:59 p.m.San Juan Luis Munoz Marin Intl
27 Jan
SJU1:24 p.m.San Juan Luis Munoz Marin Intl
22h 57m
2 stops
BUF11:21 a.m.Buffalo
C$ 512
Find similar

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 21 December 2025.
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

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

6:10 a.m.-2:08 p.m.

1 stop8h 58m

C$ 312

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Wed 4/2

11:00 a.m.-9:00 p.m.

1 stop9h 00m

San Juan Luis Munoz Marin Intl

Tue 10/2

2:05 a.m.-1:24 p.m.

2 stops12h 19m

C$ 315

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Thu 22/1

12:20 p.m.-11:10 p.m.

1 stop9h 50m

San Juan Luis Munoz Marin Intl

Wed 4/2

6:10 a.m.-12:30 p.m.

1 stop7h 20m

C$ 330

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Mon 12/1

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

1 stop7h 23m

San Juan Luis Munoz Marin Intl

Thu 15/1

6:15 a.m.-2:30 p.m.

1 stop9h 15m

C$ 331

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sat 17/1

2:49 p.m.-10:22 p.m.

1 stop6h 33m

San Juan Luis Munoz Marin Intl

Sat 24/1

7:45 a.m.-8:29 p.m.

2 stops13h 44m

C$ 333

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Fri 23/1

12:13 p.m.-11:45 p.m.

1 stop10h 32m

San Juan Luis Munoz Marin Intl

Thu 5/2

6:05 p.m.-12:16 a.m.

1 stop7h 11m

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

Wed 4/3

3:05 p.m.-11:33 p.m.

1 stop9h 28m

C$ 341

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.-10:02 a.m.

1 stop7h 09m

C$ 344

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Fri 23/1

7:45 p.m.-11:50 p.m.

1 stop27h 05m

San Juan Luis Munoz Marin Intl

Thu 29/1

6:01 a.m.-2:30 p.m.

1 stop9h 29m

C$ 349

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Mon 12/1

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

1 stop7h 23m

San Juan Luis Munoz Marin Intl

Wed 14/1

2:20 p.m.-11:47 p.m.

1 stop10h 27m

C$ 360

Flights are sorted by cheapest round-trip flights 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 cheapest month to fly to San Juan Luis Munoz Marin Intl Airport?

The month of September is, on average, the cheapest month to fly to San Juan Luis Munoz Marin Intl Airport from Buffalo, with most prices found around C$ 400. If you don’t want to visit San Juan Luis Munoz Marin Intl Airport in September, then you should wait until May to fly from Buffalo, when ticket prices are also cheap, with an average price of C$ 444.

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$ 391. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, 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$ 892.

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

The cheapest time of day to fly to San Juan Luis Munoz Marin Intl Airport is in the evening when flights can be purchased for as low as C$ 599. At noon is when there is more demand to fly to San Juan Luis Munoz Marin Intl Airport, so prices are often more expensive at around C$ 702 per ticket.

How far in advance should I book a flight 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$ 541 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$ 403 on momondo.

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

As of December 2025, prices for Buffalo to San Juan Luis Munoz Marin Intl Airport flights are approximately 5% cheaper 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

Fastest flight time

7h 20m

Direct flights

Tue, Thu, Sat and Sun
The fastest flight from Buffalo to San Juan Luis Munoz Marin Intl Airport takes 7h 20m
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

  • 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 7h 20m 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
DeltaPriceFrom C$ 165Free CancellationRating
7.9
8,018 reviews
Search Delta flights
FrontierPriceFrom C$ 235Free CancellationRating
5.8
3,083 reviews
Search Frontier flights
SouthwestPriceFrom C$ 310Free CancellationRating
8.0
4,258 reviews
Search Southwest flights
JetBluePriceFrom C$ 387Free CancellationRating
7.2
2,896 reviews
Search JetBlue flights
American AirlinesPriceFrom C$ 438Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights

Travelling to a place near San Juan?

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

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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