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Cheap flights from Buffalo to San Juan from $120

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 7/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
Frontier Logo
9:02 pm - 7:57 am
BUF
-
SJU
10h 55m
1 stop
Frontier Logo
8:00 am - 8:16 pm
SJU
-
BUF
12h 16m
1 stop
$256Frontier
Thu, Jul 9 - Tue, Jul 14
Frontier Logo
8:57 pm - 1:16 pm
BUF
-
SJU
16h 19m
1 stop
Frontier Logo
8:00 am - 8:12 pm
SJU
-
BUF
12h 12m
1 stop
$258Frontier
Thu, Aug 27 - Sun, Aug 30
JetBlue Logo
7:16 am - 11:11 am
BUF
-
SJU
3h 55mnonstop
JetBlue Logo
6:20 pm - 11:09 pm
SJU
-
BUF
4h 49mnonstop
$262JetBlue
Fri, Jun 5 - Mon, Jun 8
Multiple Airlines Logo
2:47 pm - 10:43 pm
BUF
-
SJU
7h 56m
1 stop
Multiple Airlines Logo
6:20 pm - 11:09 pm
SJU
-
BUF
4h 49mnonstop
$269Multiple Airlines
Sat, May 16 - Sat, May 23
JetBlue Logo
9:19 am - 1:13 pm
BUF
-
SJU
3h 54mnonstop
JetBlue Logo
6:20 pm - 11:09 pm
SJU
-
BUF
4h 49mnonstop
$270JetBlue
Sat, May 16 - Sat, May 23
Multiple Airlines Logo
7:16 am - 11:11 am
BUF
-
SJU
3h 55mnonstop
Multiple Airlines Logo
9:24 am - 7:12 pm
SJU
-
BUF
9h 48m
1 stop
$271Multiple Airlines
Mon, Jun 8 - Mon, Jun 15
JetBlue Logo
9:19 am - 1:13 pm
BUF
-
SJU
3h 54mnonstop
JetBlue Logo
6:20 pm - 11:09 pm
SJU
-
BUF
4h 49mnonstop
$275JetBlue
Mon, May 18 - Fri, May 22
Frontier Logo
9:02 pm - 7:57 am
BUF
-
SJU
10h 55m
1 stop
Frontier Logo
6:00 am - 7:06 pm
SJU
-
BUF
13h 06m
1 stop
$276Frontier
Thu, Jul 30 - Fri, Aug 7
Frontier Logo
9:02 pm - 7:55 am
BUF
-
SJU
10h 53m
1 stop
Frontier Logo
9:24 am - 7:12 pm
SJU
-
BUF
9h 48m
1 stop
$278Frontier
Sun, Jun 14 - Sun, Jun 21
JetBlue Logo
7:16 am - 11:11 am
BUF
-
SJU
3h 55mnonstop
JetBlue Logo
6:20 pm - 10:58 pm
SJU
-
BUF
4h 38mnonstop
$280JetBlue
Mon, Jun 8 - Mon, Jun 15

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

Our best Frontier deals on Buffalo to San Juan Luis Munoz Marin Intl Airport flight tickets
Frontier
Jul 9
BUF9:02 pmBuffalo
10h 55m
1 stop
SJU7:57 amSan Juan Luis Munoz Marin Intl
Jul 14
SJU8:00 amSan Juan Luis Munoz Marin Intl
12h 16m
1 stop
BUF8:16 pmBuffalo
$256
Frontier
Jul 30
BUF9:02 pmBuffalo
10h 55m
1 stop
SJU7:57 amSan Juan Luis Munoz Marin Intl
Aug 7
SJU6:00 amSan Juan Luis Munoz Marin Intl
13h 06m
1 stop
BUF7:06 pmBuffalo
$276
Frontier
Jun 14
BUF9:02 pmBuffalo
10h 53m
1 stop
SJU7:55 amSan Juan Luis Munoz Marin Intl
Jun 21
SJU9:24 amSan Juan Luis Munoz Marin Intl
9h 48m
1 stop
BUF7:12 pmBuffalo
$278

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
May 8
BUF9:19 amBuffalo
3h 54m
SJU1:13 pmSan Juan Luis Munoz Marin Intl
May 15
SJU7:00 pmSan Juan Luis Munoz Marin Intl
4h 48m
BUF11:48 pmBuffalo
$262
JetBlue
May 9
BUF9:19 amBuffalo
3h 54m
SJU1:13 pmSan Juan Luis Munoz Marin Intl
May 15
SJU7:00 pmSan Juan Luis Munoz Marin Intl
4h 48m
BUF11:48 pmBuffalo
$270
JetBlue
May 18
BUF9:19 amBuffalo
3h 54m
SJU1:13 pmSan Juan Luis Munoz Marin Intl
May 22
SJU6:20 pmSan Juan Luis Munoz Marin Intl
4h 49m
BUF11:09 pmBuffalo
$275

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 May 5, 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

Thu 7/9

9:02 pm-7:57 am

1 stop10h 55m

San Juan Luis Munoz Marin Intl

Tue 7/14

8:00 am-8:16 pm

1 stop12h 16m

$256

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Thu 8/27

8:57 pm-1:16 pm

1 stop16h 19m

San Juan Luis Munoz Marin Intl

Sun 8/30

8:00 am-8:12 pm

1 stop12h 12m

$258

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Fri 6/5

7:16 am-11:11 am

Nonstop3h 55m

San Juan Luis Munoz Marin Intl

Mon 6/8

6:20 pm-11:09 pm

Nonstop4h 49m

$262

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sat 5/16

2:47 pm-10:43 pm

1 stop7h 56m

San Juan Luis Munoz Marin Intl

Sat 5/23

6:20 pm-11:09 pm

Nonstop4h 49m

$269

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sat 5/16

9:19 am-1:13 pm

Nonstop3h 54m

San Juan Luis Munoz Marin Intl

Sat 5/23

6:20 pm-11:09 pm

Nonstop4h 49m

$270

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Mon 6/8

7:16 am-11:11 am

Nonstop3h 55m

San Juan Luis Munoz Marin Intl

Mon 6/15

9:24 am-7:12 pm

1 stop9h 48m

$271

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Mon 5/18

9:19 am-1:13 pm

Nonstop3h 54m

San Juan Luis Munoz Marin Intl

Fri 5/22

6:20 pm-11:09 pm

Nonstop4h 49m

$275

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Thu 7/30

9:02 pm-7:57 am

1 stop10h 55m

San Juan Luis Munoz Marin Intl

Fri 8/7

6:00 am-7:06 pm

1 stop13h 06m

$276

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sun 6/14

9:02 pm-7:55 am

1 stop10h 53m

San Juan Luis Munoz Marin Intl

Sun 6/21

9:24 am-7:12 pm

1 stop9h 48m

$278
Quickest round-trip

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Mon 6/8

7:16 am-11:11 am

Nonstop3h 55m

San Juan Luis Munoz Marin Intl

Mon 6/15

6:20 pm-10:58 pm

Nonstop4h 38m

$280

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest 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?

If you aren’t able to travel to San Juan Luis Munoz Marin Intl Airport during the month of September, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $320.

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 $345. 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 $489.

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 $380 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 $303 on momondo.

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

No. A direct flight is the cheapest option for a flight between Buffalo to San Juan Luis Munoz Marin Intl Airport.

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

As of May 2026, prices for Buffalo to San Juan Luis Munoz Marin Intl Airport flights are approximately 7% 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

$168

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 $168. 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 $325.
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 $112Free CancellationRating
7.9
8,460 reviews
Search Delta flights
FrontierPriceFrom $125Free CancellationRating
5.6
2,965 reviews
Search Frontier flights
JetBluePriceFrom $203Free CancellationRating
7.1
2,977 reviews
Search JetBlue flights
United AirlinesPriceFrom $211Free CancellationRating
7.4
9,683 reviews
Search United Airlines flights
SouthwestPriceFrom $225Free CancellationRating
7.9
4,305 reviews
Search Southwest flights
American AirlinesPriceFrom $231Free CancellationRating
7.1
11,667 reviews
Search American Airlines flights

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
Caguas
Humacao
Rio Grande
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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