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Cheap flights from Buffalo to San Juan from $144

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 8/17. 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.
American Airlines Logo
6:14 am - 6:33 pm
BUF
-
SJU
12h 19m
2 stops
American Airlines Logo
7:03 am - 9:56 pm
SJU
-
BUF
14h 53m
2 stops
$295American Airlines
Tue, Sep 1 - Sat, Sep 5
JetBlue Logo
7:00 am - 11:38 am
BUF
-
SJU
4h 38mnonstop
JetBlue Logo
6:29 pm - 11:07 pm
SJU
-
BUF
4h 38mnonstop
$307JetBlue
Fri, Aug 7 - Fri, Aug 14
JetBlue Logo
7:00 am - 11:33 am
BUF
-
SJU
4h 33mnonstop
JetBlue Logo
6:20 pm - 10:58 pm
SJU
-
BUF
4h 38mnonstop
$310JetBlue
Fri, Aug 7 - Fri, Aug 14
American Airlines Logo
7:00 am - 1:32 pm
BUF
-
SJU
6h 32m
1 stop
American Airlines Logo
2:22 pm - 11:40 pm
SJU
-
BUF
9h 18m
1 stop
$322American Airlines
Fri, Sep 11 - Thu, Sep 17
Delta Logo
6:05 am - 4:38 pm
BUF
-
SJU
10h 33m
1 stop
Delta Logo
3:10 pm - 10:36 pm
SJU
-
BUF
7h 26m
1 stop
$324Delta
Sun, Sep 6 - Sat, Sep 12
JetBlue Logo
7:00 am - 11:43 am
BUF
-
SJU
4h 43mnonstop
JetBlue Logo
6:29 pm - 11:07 pm
SJU
-
BUF
4h 38mnonstop
$325JetBlue
Sat, Jul 4 - Sat, Jul 11
American Airlines Logo
6:00 am - 4:11 pm
BUF
-
SJU
10h 11m
2 stops
American Airlines Logo
7:00 am - 2:26 pm
SJU
-
BUF
7h 26m
1 stop
$327American Airlines
Wed, Aug 19 - Wed, Sep 2
Frontier Logo
9:29 pm - 11:06 am
BUF
-
SJU
13h 37m
1 stop
Frontier Logo
8:57 pm - 9:23 am
SJU
-
BUF
12h 26m
1 stop
$331Frontier
Tue, Sep 1 - Wed, Sep 2
JetBlue Logo
7:00 am - 11:40 am
BUF
-
SJU
4h 40mnonstop
JetBlue Logo
6:29 pm - 11:07 pm
SJU
-
BUF
4h 38mnonstop
$332JetBlue
Sat, Aug 8 - Wed, Aug 12
American Airlines Logo
6:10 am - 1:32 pm
BUF
-
SJU
7h 22m
1 stop
American Airlines Logo
6:00 am - 4:53 pm
SJU
-
BUF
10h 53m
1 stop
$333American Airlines
Wed, Sep 9 - Thu, Oct 8

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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
Sep 1
BUF6:14 amBuffalo
12h 19m
2 stops
SJU6:33 pmSan Juan Luis Munoz Marin Intl
Sep 5
SJU7:03 amSan Juan Luis Munoz Marin Intl
14h 53m
2 stops
BUF9:56 pmBuffalo
$295
American Airlines
Sep 11
BUF7:00 amBuffalo
6h 32m
1 stop
SJU1:32 pmSan Juan Luis Munoz Marin Intl
Sep 17
SJU2:22 pmSan Juan Luis Munoz Marin Intl
9h 18m
1 stop
BUF11:40 pmBuffalo
$322
American Airlines
Aug 19
BUF6:00 amBuffalo
10h 11m
2 stops
SJU4:11 pmSan Juan Luis Munoz Marin Intl
Sep 2
SJU7:00 amSan Juan Luis Munoz Marin Intl
7h 26m
1 stop
BUF2:26 pmBuffalo
$327

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
Aug 7
BUF7:00 amBuffalo
4h 38m
SJU11:38 amSan Juan Luis Munoz Marin Intl
Aug 14
SJU6:29 pmSan Juan Luis Munoz Marin Intl
4h 38m
BUF11:07 pmBuffalo
$307
JetBlue
Aug 7
BUF7:00 amBuffalo
4h 33m
SJU11:33 amSan Juan Luis Munoz Marin Intl
Aug 14
SJU6:20 pmSan Juan Luis Munoz Marin Intl
4h 38m
BUF10:58 pmBuffalo
$310
JetBlue
Jul 4
BUF7:00 amBuffalo
4h 43m
SJU11:43 amSan Juan Luis Munoz Marin Intl
Jul 11
SJU6:29 pmSan Juan Luis Munoz Marin Intl
4h 38m
BUF11:07 pmBuffalo
$325

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 832,500 searches. Data last updated June 22, 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

Tue 9/1

6:14 am-6:33 pm

2 stops12h 19m

San Juan Luis Munoz Marin Intl

Sat 9/5

7:03 am-9:56 pm

2 stops14h 53m

$295

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Fri 8/7

7:00 am-11:38 am

Nonstop4h 38m

San Juan Luis Munoz Marin Intl

Fri 8/14

6:29 pm-11:07 pm

Nonstop4h 38m

$307
Quickest round-trip

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Fri 8/7

7:00 am-11:33 am

Nonstop4h 33m

San Juan Luis Munoz Marin Intl

Fri 8/14

6:20 pm-10:58 pm

Nonstop4h 38m

$310

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Fri 9/11

7:00 am-1:32 pm

1 stop6h 32m

San Juan Luis Munoz Marin Intl

Thu 9/17

2:22 pm-11:40 pm

1 stop9h 18m

$322

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sun 9/6

6:05 am-4:38 pm

1 stop10h 33m

San Juan Luis Munoz Marin Intl

Sat 9/12

3:10 pm-10:36 pm

1 stop7h 26m

$324

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sat 7/4

7:00 am-11:43 am

Nonstop4h 43m

San Juan Luis Munoz Marin Intl

Sat 7/11

6:29 pm-11:07 pm

Nonstop4h 38m

$325

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Wed 8/19

6:00 am-4:11 pm

2 stops10h 11m

San Juan Luis Munoz Marin Intl

Wed 9/2

7:00 am-2:26 pm

1 stop7h 26m

$327

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Tue 9/1

9:29 pm-11:06 am

1 stop13h 37m

San Juan Luis Munoz Marin Intl

Wed 9/2

8:57 pm-9:23 am

1 stop12h 26m

$331

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sat 8/8

7:00 am-11:40 am

Nonstop4h 40m

San Juan Luis Munoz Marin Intl

Wed 8/12

6:29 pm-11:07 pm

Nonstop4h 38m

$332

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Wed 9/9

6:10 am-1:32 pm

1 stop7h 22m

San Juan Luis Munoz Marin Intl

Thu 10/8

6:00 am-4:53 pm

1 stop10h 53m

$333

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?

If you aren’t able to travel to San Juan Luis Munoz Marin Intl Airport during the month of September, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $340.

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

On average, the least expensive day to fly to San Juan Luis Munoz Marin Intl Airport from Buffalo is on a Friday. momondo users have found tickets for Friday departures for as low as $364. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Saturday is the most expensive day to depart from Buffalo because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $453.

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 $379 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 $341 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 35% 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

$158

Fastest flight time

3h 54m

Direct flights

Tue, Thu, Sat and Sun
The best one-way flight to San Juan Luis Munoz Marin Intl Airport from Buffalo in the past 72 hours is $158. The best round-trip flight deal from Buffalo to San Juan Luis Munoz Marin Intl Airport found on momondo in the last 72 hours is $340.
The fastest flight from Buffalo to San Juan Luis Munoz Marin Intl Airport takes 3h 54m
Direct flights go from Buffalo to San Juan Luis Munoz Marin Intl Airport on Tuesday, Thursday, Saturday and Sunday. The only airline offering direct flights is JetBlue.
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?

    Buffalo and San Juan Luis Munoz Marin Intl are 1848.0 mi apart from one another. Typically, this will take 3h 54m 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 are updated daily.

  • 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 required travel and health documents for your San Juan Luis Munoz Marin Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Juan Luis Munoz Marin Intl Airport. We recommend that you seek guidance from your airline or a reliable 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 $106Free CancellationRating
7.8
8,424 reviews
Search Delta flights
FrontierPriceFrom $129Free CancellationRating
5.6
2,870 reviews
Search Frontier flights
JetBluePriceFrom $208Free CancellationRating
7.1
2,997 reviews
Search JetBlue flights
United AirlinesPriceFrom $211Free CancellationRating
7.4
9,872 reviews
Search United Airlines flights
SouthwestPriceFrom $225Free CancellationRating
7.9
4,241 reviews
Search Southwest flights
American AirlinesPriceFrom $231Free CancellationRating
7.1
11,741 reviews
Search American Airlines 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 $208. Generally, JetBlue has 4 flights on this route every week with an average price of $375. JetBlue is rated 7.1/10 by our users.

Traveling to a place near San Juan?

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

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Buffalo to San Juan. momondo saves you time and could save you money on your trip.

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

Flights from Buffalo to San Juan with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search for Buffalo to San Juan flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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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