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Cheap flights from Buffalo to San Juan from C$ 218

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 17/9. 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

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Buffalo to San Juan

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
11:25 a.m. - 10:50 p.m.
BUF
-
SJU
11h 25m
1 stop
Southwest Logo
5:00 a.m. - 3:15 p.m.
SJU
-
BUF
10h 15m
2 stops
C$ 418Southwest
Mon, 21 Sep - Mon, 28 Sep
Southwest Logo
11:25 a.m. - 10:10 p.m.
BUF
-
SJU
10h 45m
2 stops
Southwest Logo
5:35 a.m. - 1:20 p.m.
SJU
-
BUF
7h 45m
1 stop
C$ 434Southwest
Fri, 25 Sep - Wed, 21 Oct
United Airlines Logo
7:00 a.m. - 8:38 p.m.
BUF
-
SJU
13h 38m
2 stops
United Airlines Logo
1:00 a.m. - 2:23 p.m.
SJU
-
BUF
13h 23m
2 stops
C$ 445United Airlines
Wed, 7 Oct - Tue, 13 Oct
JetBlue Logo
8:00 a.m. - 12:33 p.m.
BUF
-
SJU
4h 33mdirect
JetBlue Logo
6:15 p.m. - 10:50 p.m.
SJU
-
BUF
4h 35mdirect
C$ 446JetBlue
Mon, 5 Oct - Fri, 16 Oct
Southwest Logo
3:45 p.m. - 11:50 p.m.
BUF
-
SJU
8h 05m
2 stops
Southwest Logo
5:35 a.m. - 2:50 p.m.
SJU
-
BUF
9h 15m
2 stops
C$ 456Southwest
Sat, 10 Oct - Tue, 13 Oct
Delta Logo
6:05 a.m. - 4:38 p.m.
BUF
-
SJU
10h 33m
1 stop
Delta Logo
3:10 p.m. - 10:36 p.m.
SJU
-
BUF
7h 26m
1 stop
C$ 459Delta
Sun, 6 Sep - Sat, 12 Sep
Southwest Logo
11:00 a.m. - 10:55 p.m.
BUF
-
SJU
10h 55m
2 stops
Southwest Logo
2:25 p.m. - 9:50 p.m.
SJU
-
BUF
8h 25m
1 stop
C$ 462Southwest
Sat, 7 Nov - Wed, 11 Nov
Delta Logo
6:05 a.m. - 4:38 p.m.
BUF
-
SJU
10h 33m
1 stop
Delta Logo
7:00 a.m. - 3:06 p.m.
SJU
-
BUF
8h 06m
1 stop
C$ 473Delta
Wed, 12 Aug - Wed, 19 Aug
United Airlines Logo
7:00 a.m. - 8:38 p.m.
BUF
-
SJU
13h 38m
2 stops
United Airlines Logo
1:25 p.m. - 11:36 p.m.
SJU
-
BUF
10h 11m
2 stops
C$ 487United Airlines
Fri, 25 Sep - Wed, 21 Oct
Southwest Logo
4:35 p.m. - 11:50 p.m.
BUF
-
SJU
7h 15m
1 stop
Southwest Logo
5:00 a.m. - 11:50 a.m.
SJU
-
BUF
6h 50m
1 stop
C$ 492Southwest
Fri, 21 Aug - Mon, 24 Aug

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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
21 Sep
BUF11:25 a.m.Buffalo
11h 25m
1 stop
SJU10:50 p.m.San Juan Luis Munoz Marin Intl
28 Sep
SJU5:00 a.m.San Juan Luis Munoz Marin Intl
10h 15m
2 stops
BUF3:15 p.m.Buffalo
C$ 418
Southwest
25 Sep
BUF11:25 a.m.Buffalo
10h 45m
2 stops
SJU10:10 p.m.San Juan Luis Munoz Marin Intl
21 Oct
SJU5:35 a.m.San Juan Luis Munoz Marin Intl
7h 45m
1 stop
BUF1:20 p.m.Buffalo
C$ 434
Southwest
10 Oct
BUF3:45 p.m.Buffalo
8h 05m
2 stops
SJU11:50 p.m.San Juan Luis Munoz Marin Intl
13 Oct
SJU5:35 a.m.San Juan Luis Munoz Marin Intl
9h 15m
2 stops
BUF2:50 p.m.Buffalo
C$ 456

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

Our best United Airlines deals on Buffalo to San Juan Luis Munoz Marin Intl Airport flight tickets
United Airlines
7 Oct
BUF7:00 a.m.Buffalo
13h 38m
2 stops
SJU8:38 p.m.San Juan Luis Munoz Marin Intl
13 Oct
SJU1:00 a.m.San Juan Luis Munoz Marin Intl
13h 23m
2 stops
BUF2:23 p.m.Buffalo
C$ 445
United Airlines
25 Sep
BUF7:00 a.m.Buffalo
13h 38m
2 stops
SJU8:38 p.m.San Juan Luis Munoz Marin Intl
21 Oct
SJU1:25 p.m.San Juan Luis Munoz Marin Intl
10h 11m
2 stops
BUF11:36 p.m.Buffalo
C$ 487
United Airlines
7 Oct
BUF7:00 a.m.Buffalo
7h 44m
1 stop
SJU2:44 p.m.San Juan Luis Munoz Marin Intl
17 Oct
SJU1:25 p.m.San Juan Luis Munoz Marin Intl
9h 46m
1 stop
BUF11:11 p.m.Buffalo
C$ 550

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 23 June 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 - SJU

BUFSJU

Buffalo

Mon 21/9

11:25 a.m.-10:50 p.m.

1 stop11h 25m

San Juan Luis Munoz Marin Intl

Mon 28/9

5:00 a.m.-3:15 p.m.

2 stops10h 15m

C$ 418

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Fri 25/9

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

2 stops10h 45m

San Juan Luis Munoz Marin Intl

Wed 21/10

5:35 a.m.-1:20 p.m.

1 stop7h 45m

C$ 434

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Wed 7/10

7:00 a.m.-8:38 p.m.

2 stops13h 38m

San Juan Luis Munoz Marin Intl

Tue 13/10

1:00 a.m.-2:23 p.m.

2 stops13h 23m

C$ 445
Quickest round-trip

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Mon 5/10

8:00 a.m.-12:33 p.m.

Nonstop4h 33m

San Juan Luis Munoz Marin Intl

Fri 16/10

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

Nonstop4h 35m

C$ 446

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sat 10/10

3:45 p.m.-11:50 p.m.

2 stops8h 05m

San Juan Luis Munoz Marin Intl

Tue 13/10

5:35 a.m.-2:50 p.m.

2 stops9h 15m

C$ 456

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sun 6/9

6:05 a.m.-4:38 p.m.

1 stop10h 33m

San Juan Luis Munoz Marin Intl

Sat 12/9

3:10 p.m.-10:36 p.m.

1 stop7h 26m

C$ 459

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sat 7/11

11:00 a.m.-10:55 p.m.

2 stops10h 55m

San Juan Luis Munoz Marin Intl

Wed 11/11

2:25 p.m.-9:50 p.m.

1 stop8h 25m

C$ 462

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Wed 12/8

6:05 a.m.-4:38 p.m.

1 stop10h 33m

San Juan Luis Munoz Marin Intl

Wed 19/8

7:00 a.m.-3:06 p.m.

1 stop8h 06m

C$ 473

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Fri 25/9

7:00 a.m.-8:38 p.m.

2 stops13h 38m

San Juan Luis Munoz Marin Intl

Wed 21/10

1:25 p.m.-11:36 p.m.

2 stops10h 11m

C$ 487

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Fri 21/8

4:35 p.m.-11:50 p.m.

1 stop7h 15m

San Juan Luis Munoz Marin Intl

Mon 24/8

5:00 a.m.-11:50 a.m.

1 stop6h 50m

C$ 492

Flights are sorted by cheapest round-trip flights first.

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See travel insights to San Juan from

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$ 475. If you don’t want to visit San Juan Luis Munoz Marin Intl Airport in September, then you should wait until March to fly from Buffalo, when ticket prices are also cheap, with an average price of C$ 482.

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 Wednesday when prices can be found for as low as C$ 507. 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$ 582.

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$ 483 on momondo.

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

There is only 1 cabin class 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 26% 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 June 2026, prices for Buffalo to San Juan Luis Munoz Marin Intl Airport flights are approximately 11% 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

Best price found

C$ 545

Fastest flight time

4h 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$ 545
The fastest flight from Buffalo to San Juan Luis Munoz Marin Intl Airport takes 4h 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 4h 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$ 206Free CancellationRating
7.1
11,750 reviews
Search American Airlines flights
FrontierPriceFrom C$ 243Free CancellationRating
5.6
2,867 reviews
Search Frontier flights
JetBluePriceFrom C$ 301Free CancellationRating
7.1
3,002 reviews
Search JetBlue flights
SouthwestPriceFrom C$ 319Free CancellationRating
7.9
4,242 reviews
Search Southwest flights

  • JetBlue Flights From Buffalo to San Juan Luis Munoz Marin Intl Airport

    The lowest priced JetBlue flight from Buffalo to San Juan Luis Munoz Marin Intl Airport from the last 72 hours was C$ 301. Generally, JetBlue has 2 flights on this route every week with an average price of C$ 514. JetBlue is rated 7.1/10 by our users.

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
Fajardo
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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