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Cheap flights from Buffalo to San Juan from $98

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 4/10. 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.
American Airlines Logo
7:28 pm - 10:48 am
BUF
-
SJU
15h 20m
1 stop
American Airlines Logo
11:38 am - 11:59 pm
SJU
-
BUF
12h 21m
2 stops
$230American Airlines
Sat, May 9 - Wed, May 13
Frontier Logo
7:52 pm - 11:22 pm
BUF
-
SJU
27h 30m
1 stop
Frontier Logo
3:03 am - 6:59 pm
SJU
-
BUF
15h 56m
1 stop
$231Frontier
Mon, Jun 1 - Fri, Jun 5
Delta Logo
6:00 am - 1:25 pm
BUF
-
SJU
7h 25m
1 stop
Delta Logo
1:25 pm - 12:50 am
SJU
-
BUF
11h 25m
1 stop
$232Delta
Tue, Apr 14 - Thu, Apr 30
American Airlines Logo
7:28 pm - 10:48 am
BUF
-
SJU
15h 20m
1 stop
American Airlines Logo
11:43 am - 10:04 pm
SJU
-
BUF
10h 21m
2 stops
$235American Airlines
Sat, May 2 - Wed, May 6
Frontier Logo
8:49 pm - 2:08 am
BUF
-
SJU
29h 19m
1 stop
Frontier Logo
6:09 pm - 7:07 pm
SJU
-
BUF
24h 58m
1 stop
$239Frontier
Thu, Jun 4 - Mon, Jun 8
Multiple Airlines Logo
7:20 am - 11:14 am
BUF
-
SJU
3h 54mnonstop
Multiple Airlines Logo
8:30 am - 8:04 pm
SJU
-
BUF
11h 34m
1 stop
$256Multiple Airlines
Sat, May 2 - Thu, May 7
Multiple Airlines Logo
10:52 am - 2:01 am
BUF
-
SJU
15h 09m
1 stop
Multiple Airlines Logo
6:30 pm - 11:19 pm
SJU
-
BUF
4h 49mnonstop
$259Multiple Airlines
Fri, Apr 17 - Fri, Apr 24
Multiple Airlines Logo
10:52 am - 3:37 pm
BUF
-
SJU
28h 45m
1 stop
Multiple Airlines Logo
6:30 pm - 11:19 pm
SJU
-
BUF
4h 49mnonstop
$265Multiple Airlines
Fri, Apr 17 - Fri, Apr 24
United Airlines Logo
11:02 am - 9:24 pm
BUF
-
SJU
10h 22m
2 stops
United Airlines Logo
1:00 am - 9:50 am
SJU
-
BUF
8h 50m
1 stop
$268United Airlines
Sat, May 2 - Wed, May 6
Multiple Airlines Logo
11:19 am - 2:01 am
BUF
-
SJU
14h 42m
1 stop
Multiple Airlines Logo
7:00 pm - 11:48 pm
SJU
-
BUF
4h 48mnonstop
$271Multiple Airlines
Mon, May 4 - Fri, May 15

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
May 9
BUF7:28 pmBuffalo
15h 20m
1 stop
SJU10:48 amSan Juan Luis Munoz Marin Intl
May 13
SJU11:38 amSan Juan Luis Munoz Marin Intl
12h 21m
2 stops
BUF11:59 pmBuffalo
$230
American Airlines
May 2
BUF7:28 pmBuffalo
15h 20m
1 stop
SJU10:48 amSan Juan Luis Munoz Marin Intl
May 6
SJU11:43 amSan Juan Luis Munoz Marin Intl
10h 21m
2 stops
BUF10:04 pmBuffalo
$235
American Airlines
Apr 28
BUF11:49 amBuffalo
10h 16m
2 stops
SJU10:05 pmSan Juan Luis Munoz Marin Intl
May 6
SJU6:00 amSan Juan Luis Munoz Marin Intl
9h 29m
1 stop
BUF3:29 pmBuffalo
$272

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
Apr 14
BUF6:00 amBuffalo
7h 25m
1 stop
SJU1:25 pmSan Juan Luis Munoz Marin Intl
Apr 30
SJU1:25 pmSan Juan Luis Munoz Marin Intl
11h 25m
1 stop
BUF12:50 amBuffalo
$232
Delta
Apr 14
BUF2:34 pmBuffalo
9h 25m
1 stop
SJU11:59 pmSan Juan Luis Munoz Marin Intl
May 1
SJU5:42 pmSan Juan Luis Munoz Marin Intl
7h 08m
1 stop
BUF12:50 amBuffalo
$288
Delta
May 5
BUF2:34 pmBuffalo
9h 25m
1 stop
SJU11:59 pmSan Juan Luis Munoz Marin Intl
May 7
SJU1:16 pmSan Juan Luis Munoz Marin Intl
11h 03m
1 stop
BUF12:19 amBuffalo
$313

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 March 23, 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

Sat 5/9

7:28 pm-10:48 am

1 stop15h 20m

San Juan Luis Munoz Marin Intl

Wed 5/13

11:38 am-11:59 pm

2 stops12h 21m

$230

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Mon 6/1

7:52 pm-11:22 pm

1 stop27h 30m

San Juan Luis Munoz Marin Intl

Fri 6/5

3:03 am-6:59 pm

1 stop15h 56m

$231

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Tue 4/14

6:00 am-1:25 pm

1 stop7h 25m

San Juan Luis Munoz Marin Intl

Thu 4/30

1:25 pm-12:50 am

1 stop11h 25m

$232

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sat 5/2

7:28 pm-10:48 am

1 stop15h 20m

San Juan Luis Munoz Marin Intl

Wed 5/6

11:43 am-10:04 pm

2 stops10h 21m

$235

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Thu 6/4

8:49 pm-2:08 am

1 stop29h 19m

San Juan Luis Munoz Marin Intl

Mon 6/8

6:09 pm-7:07 pm

1 stop24h 58m

$239
Quickest round-trip

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sat 5/2

7:20 am-11:14 am

Nonstop3h 54m

San Juan Luis Munoz Marin Intl

Thu 5/7

8:30 am-8:04 pm

1 stop11h 34m

$256

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Fri 4/17

10:52 am-2:01 am

1 stop15h 09m

San Juan Luis Munoz Marin Intl

Fri 4/24

6:30 pm-11:19 pm

Nonstop4h 49m

$259

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Fri 4/17

10:52 am-3:37 pm

1 stop28h 45m

San Juan Luis Munoz Marin Intl

Fri 4/24

6:30 pm-11:19 pm

Nonstop4h 49m

$265

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sat 5/2

11:02 am-9:24 pm

2 stops10h 22m

San Juan Luis Munoz Marin Intl

Wed 5/6

1:00 am-9:50 am

1 stop8h 50m

$268

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Mon 5/4

11:19 am-2:01 am

1 stop14h 42m

San Juan Luis Munoz Marin Intl

Fri 5/15

7:00 pm-11:48 pm

Nonstop4h 48m

$271

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 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 $291.

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 Wednesday. momondo users have found tickets for Wednesday departures for as low as $335. 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 $604.

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 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 $378 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 $288 on momondo.

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

There is only 1 cabin class available to choose from on Buffalo to San Juan Luis Munoz Marin Intl 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?

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 March 2026, prices for Buffalo to San Juan Luis Munoz Marin Intl Airport flights are approximately 10% 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 49m

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 $320.
The fastest flight from Buffalo to San Juan Luis Munoz Marin Intl Airport takes 3h 49m
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

  • 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 49m 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 $120Free CancellationRating
7.9
8,318 reviews
Search Delta flights
FrontierPriceFrom $129Free CancellationRating
5.7
3,020 reviews
Search Frontier flights
JetBluePriceFrom $193Free CancellationRating
7.2
2,908 reviews
Search JetBlue flights
United AirlinesPriceFrom $211Free CancellationRating
7.4
9,463 reviews
Search United Airlines flights
SouthwestPriceFrom $225Free CancellationRating
8.0
4,324 reviews
Search Southwest flights
American AirlinesPriceFrom $231Free CancellationRating
7.1
11,486 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
Rio Grande
Humacao
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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