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Cheap flights from Buffalo to San Juan from C$ 145

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 3/3. 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.
United Airlines Logo
6:04 a.m. - 8:34 p.m.
BUF
-
SJU
14h 30m
2 stops
United Airlines Logo
4:55 p.m. - 11:44 p.m.
SJU
-
BUF
6h 49m
1 stop
C$ 290United Airlines
Wed, 6 May - Tue, 12 May
Southwest Logo
11:55 a.m. - 6:10 p.m.
BUF
-
SJU
6h 15m
1 stop
Southwest Logo
5:05 a.m. - 12:15 p.m.
SJU
-
BUF
7h 10m
1 stop
C$ 311Southwest
Wed, 6 May - Tue, 12 May
JetBlue Logo
7:58 p.m. - 2:27 a.m.
BUF
-
SJU
6h 29m
1 stop
JetBlue Logo
6:20 p.m. - 11:09 p.m.
SJU
-
BUF
4h 49mdirect
C$ 324JetBlue
Mon, 16 Mar - Sat, 28 Mar
Southwest Logo
12:20 p.m. - 11:10 p.m.
BUF
-
SJU
9h 50m
1 stop
Southwest Logo
5:15 a.m. - 11:40 a.m.
SJU
-
BUF
6h 25m
1 stop
C$ 333Southwest
Wed, 4 Mar - Wed, 11 Mar
Delta Logo
12:06 p.m. - 11:13 p.m.
BUF
-
SJU
11h 07m
1 stop
Delta Logo
1:55 p.m. - 11:59 p.m.
SJU
-
BUF
10h 04m
1 stop
C$ 340Delta
Wed, 6 May - Thu, 14 May
Southwest Logo
4:00 p.m. - 11:40 p.m.
BUF
-
SJU
7h 40m
1 stop
Southwest Logo
11:25 a.m. - 10:55 p.m.
SJU
-
BUF
11h 30m
1 stop
C$ 350Southwest
Fri, 8 May - Wed, 13 May
Southwest Logo
1:20 p.m. - 12:35 a.m.
BUF
-
SJU
10h 15m
2 stops
Southwest Logo
5:15 a.m. - 4:00 p.m.
SJU
-
BUF
10h 45m
1 stop
C$ 378Southwest
Tue, 3 Mar - Tue, 10 Mar
Delta Logo
12:05 p.m. - 9:12 p.m.
BUF
-
SJU
8h 07m
1 stop
Delta Logo
7:00 a.m. - 2:56 p.m.
SJU
-
BUF
8h 56m
1 stop
C$ 384Delta
Sun, 1 Mar - Wed, 4 Mar
Delta Logo
4:47 p.m. - 11:15 p.m.
BUF
-
SJU
6h 28m
1 stop
Delta Logo
6:15 a.m. - 3:53 p.m.
SJU
-
BUF
9h 38m
1 stop
C$ 385Delta
Fri, 10 Apr - Tue, 21 Apr
JetBlue Logo
12:25 p.m. - 8:03 p.m.
BUF
-
SJU
7h 38m
1 stop
JetBlue Logo
6:20 p.m. - 10:45 p.m.
SJU
-
BUF
4h 25mdirect
C$ 388JetBlue
Wed, 1 Jul - Wed, 29 Jul

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

Our best Delta deals on Buffalo to San Juan Luis Munoz Marin Intl Airport flight tickets
Delta
15 Apr
BUF2:34 p.m.Buffalo
9h 25m
1 stop
SJU11:59 p.m.San Juan Luis Munoz Marin Intl
17 Apr
SJU6:15 a.m.San Juan Luis Munoz Marin Intl
9h 24m
1 stop
BUF3:39 p.m.Buffalo
C$ 340
Delta
1 Mar
BUF12:05 p.m.Buffalo
8h 07m
1 stop
SJU9:12 p.m.San Juan Luis Munoz Marin Intl
4 Mar
SJU7:00 a.m.San Juan Luis Munoz Marin Intl
8h 56m
1 stop
BUF2:56 p.m.Buffalo
C$ 384
Delta
10 Apr
BUF4:47 p.m.Buffalo
6h 28m
1 stop
SJU11:15 p.m.San Juan Luis Munoz Marin Intl
21 Apr
SJU6:15 a.m.San Juan Luis Munoz Marin Intl
9h 38m
1 stop
BUF3:53 p.m.Buffalo
C$ 385

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
16 Mar
BUF7:58 p.m.Buffalo
6h 29m
1 stop
SJU2:27 a.m.San Juan Luis Munoz Marin Intl
28 Mar
SJU6:20 p.m.San Juan Luis Munoz Marin Intl
4h 49m
BUF11:09 p.m.Buffalo
C$ 324
JetBlue
1 Jul
BUF12:25 p.m.Buffalo
7h 38m
1 stop
SJU8:03 p.m.San Juan Luis Munoz Marin Intl
29 Jul
SJU6:20 p.m.San Juan Luis Munoz Marin Intl
4h 25m
BUF10:45 p.m.Buffalo
C$ 388
JetBlue
1 Mar
BUF6:00 a.m.Buffalo
7h 42m
1 stop
SJU2:42 p.m.San Juan Luis Munoz Marin Intl
4 Mar
SJU10:55 a.m.San Juan Luis Munoz Marin Intl
8h 51m
1 stop
BUF6:46 p.m.Buffalo
C$ 395

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 4 February 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

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Wed 6/5

6:04 a.m.-8:34 p.m.

2 stops14h 30m

San Juan Luis Munoz Marin Intl

Tue 12/5

4:55 p.m.-11:44 p.m.

1 stop6h 49m

C$ 290

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Wed 6/5

11:55 a.m.-6:10 p.m.

1 stop6h 15m

San Juan Luis Munoz Marin Intl

Tue 12/5

5:05 a.m.-12:15 p.m.

1 stop7h 10m

C$ 311

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Mon 16/3

7:58 p.m.-2:27 a.m.

1 stop6h 29m

San Juan Luis Munoz Marin Intl

Sat 28/3

6:20 p.m.-11:09 p.m.

Nonstop4h 49m

C$ 324

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Wed 4/3

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

1 stop9h 50m

San Juan Luis Munoz Marin Intl

Wed 11/3

5:15 a.m.-11:40 a.m.

1 stop6h 25m

C$ 333

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Wed 6/5

12:06 p.m.-11:13 p.m.

1 stop11h 07m

San Juan Luis Munoz Marin Intl

Thu 14/5

1:55 p.m.-11:59 p.m.

1 stop10h 04m

C$ 340

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Fri 8/5

4:00 p.m.-11:40 p.m.

1 stop7h 40m

San Juan Luis Munoz Marin Intl

Wed 13/5

11:25 a.m.-10:55 p.m.

1 stop11h 30m

C$ 350

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Tue 3/3

1:20 p.m.-12:35 a.m.

2 stops10h 15m

San Juan Luis Munoz Marin Intl

Tue 10/3

5:15 a.m.-4:00 p.m.

1 stop10h 45m

C$ 378

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sun 1/3

12:05 p.m.-9:12 p.m.

1 stop8h 07m

San Juan Luis Munoz Marin Intl

Wed 4/3

7:00 a.m.-2:56 p.m.

1 stop8h 56m

C$ 384

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Fri 10/4

4:47 p.m.-11:15 p.m.

1 stop6h 28m

San Juan Luis Munoz Marin Intl

Tue 21/4

6:15 a.m.-3:53 p.m.

1 stop9h 38m

C$ 385

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Wed 1/7

12:25 p.m.-8:03 p.m.

1 stop7h 38m

San Juan Luis Munoz Marin Intl

Wed 29/7

6:20 p.m.-10:45 p.m.

Nonstop4h 25m

C$ 388

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?

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$ 396. 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$ 429.

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$ 520 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$ 422 on momondo.

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

As of February 2026, prices for Buffalo to San Juan Luis Munoz Marin Intl Airport flights are approximately 26% 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 41m

Direct flights

Tue, Sat and Sun
The fastest flight from Buffalo to San Juan Luis Munoz Marin Intl Airport takes 7h 41m
Direct flights go from Buffalo to San Juan Luis Munoz Marin Intl Airport on Tuesday, 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 41m 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$ 163Free CancellationRating
7.9
8,138 reviews
Search Delta flights
American AirlinesPriceFrom C$ 199Free CancellationRating
7.2
11,218 reviews
Search American Airlines flights
FrontierPriceFrom C$ 232Free CancellationRating
5.7
3,051 reviews
Search Frontier flights
JetBluePriceFrom C$ 291Free CancellationRating
7.2
2,893 reviews
Search JetBlue flights
SouthwestPriceFrom C$ 307Free CancellationRating
8.0
4,272 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

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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