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Cheap flights from Buffalo to San Juan from $113

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 9/30. 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

Delta Logo
7:00 am - 4:17 pmBUF-SJU
9h 17m1 stop
Delta Logo
7:00 am - 3:10 pmSJU-BUF
8h 10m1 stop
$225Delta
Find Deal
Sat, Oct 4 - Tue, Oct 7
American Airlines Logo
11:52 am - 11:59 pmBUF-SJU
12h 07m2 stops
American Airlines Logo
7:00 am - 4:26 pmSJU-BUF
10h 26m1 stop
$235American Airlines
Find Deal
Fri, Oct 31 - Wed, Nov 5
Frontier Logo
6:59 pm - 2:34 amBUF-SJU
7h 35m1 stop
Frontier Logo
9:26 pm - 6:14 pmSJU-BUF
20h 48m2 stops
$254Frontier
Find Deal
Mon, Sep 22 - Fri, Sep 26
Frontier Logo
7:41 pm - 2:34 amBUF-SJU
6h 53m1 stop
Frontier Logo
12:28 am - 6:46 pmSJU-BUF
18h 18m2 stops
$260Frontier
Find Deal
Sun, Sep 21 - Wed, Sep 24
JetBlue Logo
6:00 am - 2:31 pmBUF-SJU
8h 31m1 stop
JetBlue Logo
3:03 am - 2:59 pmSJU-BUF
11h 56m1 stop
$276JetBlue
Find Deal
Sat, Oct 4 - Mon, Oct 6
JetBlue Logo
12:15 pm - 9:54 pmBUF-SJU
8h 39m1 stop
JetBlue Logo
2:00 am - 10:51 amSJU-BUF
9h 51m1 stop
$282JetBlue
Find Deal
Wed, Nov 12 - Thu, Nov 20
United Airlines Logo
6:30 am - 1:45 pmBUF-SJU
7h 15m1 stop
United Airlines Logo
1:05 am - 4:53 pmSJU-BUF
15h 48m2 stops
$289United Airlines
Find Deal
Wed, Oct 22 - Fri, Oct 24
Southwest Logo
5:30 am - 5:15 pmBUF-SJU
11h 45m2 stops
Southwest Logo
5:45 am - 3:50 pmSJU-BUF
10h 05m1 stop
$305Southwest
Find Deal
Tue, Oct 21 - Sun, Oct 26
United Airlines Logo
4:38 pm - 11:57 pmBUF-SJU
7h 19m1 stop
United Airlines Logo
1:05 am - 9:43 amSJU-BUF
8h 38m2 stops
$309United Airlines
Find Deal
Sat, Oct 4 - Mon, Oct 6
Southwest Logo
5:30 pm - 12:45 amBUF-SJU
7h 15m1 stop
Southwest Logo
8:00 am - 8:45 pmSJU-BUF
12h 45m1 stop
$333Southwest
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Sun, Sep 14 - Tue, Sep 23

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
Oct 4
BUF7:00 amBuffalo
9h 17m
1 stop
SJU4:17 pmSan Juan Luis Munoz Marin Intl
Oct 7
SJU7:00 amSan Juan Luis Munoz Marin Intl
8h 10m
1 stop
BUF3:10 pmBuffalo
$225
Find similar
Delta
Oct 2
BUF7:00 amBuffalo
9h 17m
1 stop
SJU4:17 pmSan Juan Luis Munoz Marin Intl
Oct 9
SJU1:06 pmSan Juan Luis Munoz Marin Intl
10h 50m
1 stop
BUF11:56 pmBuffalo
$253
Find similar
Delta
Nov 12
BUF7:00 amBuffalo
9h 20m
1 stop
SJU5:20 pmSan Juan Luis Munoz Marin Intl
Nov 21
SJU7:15 amSan Juan Luis Munoz Marin Intl
8h 50m
1 stop
BUF3:05 pmBuffalo
$281
Find similar

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
Oct 31
BUF11:52 amBuffalo
12h 07m
2 stops
SJU11:59 pmSan Juan Luis Munoz Marin Intl
Nov 5
SJU7:00 amSan Juan Luis Munoz Marin Intl
10h 26m
1 stop
BUF4:26 pmBuffalo
$235
Find similar
American Airlines
Oct 20
BUF8:00 amBuffalo
15h 59m
1 stop
SJU11:59 pmSan Juan Luis Munoz Marin Intl
Oct 25
SJU5:25 amSan Juan Luis Munoz Marin Intl
9h 27m
1 stop
BUF2:52 pmBuffalo
$239
Find similar
American Airlines
Oct 20
BUF6:00 amBuffalo
8h 55m
1 stop
SJU2:55 pmSan Juan Luis Munoz Marin Intl
Oct 25
SJU5:25 amSan Juan Luis Munoz Marin Intl
12h 45m
1 stop
BUF6:10 pmBuffalo
$240
Find similar

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 September 8, 2025.
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

Sat 10/4

7:00 am-4:17 pm

1 stop9h 17m

San Juan Luis Munoz Marin Intl

Tue 10/7

7:00 am-3:10 pm

1 stop8h 10m

$225

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Fri 10/31

11:52 am-11:59 pm

2 stops12h 07m

San Juan Luis Munoz Marin Intl

Wed 11/5

7:00 am-4:26 pm

1 stop10h 26m

$235

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Mon 9/22

6:59 pm-2:34 am

1 stop7h 35m

San Juan Luis Munoz Marin Intl

Fri 9/26

9:26 pm-6:14 pm

2 stops20h 48m

$254

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sun 9/21

7:41 pm-2:34 am

1 stop6h 53m

San Juan Luis Munoz Marin Intl

Wed 9/24

12:28 am-6:46 pm

2 stops18h 18m

$260

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sat 10/4

6:00 am-2:31 pm

1 stop8h 31m

San Juan Luis Munoz Marin Intl

Mon 10/6

3:03 am-2:59 pm

1 stop11h 56m

$276

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Wed 11/12

12:15 pm-9:54 pm

1 stop8h 39m

San Juan Luis Munoz Marin Intl

Thu 11/20

2:00 am-10:51 am

1 stop9h 51m

$282

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Wed 10/22

6:30 am-1:45 pm

1 stop7h 15m

San Juan Luis Munoz Marin Intl

Fri 10/24

1:05 am-4:53 pm

2 stops15h 48m

$289

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Tue 10/21

5:30 am-5:15 pm

2 stops11h 45m

San Juan Luis Munoz Marin Intl

Sun 10/26

5:45 am-3:50 pm

1 stop10h 05m

$305

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sat 10/4

4:38 pm-11:57 pm

1 stop7h 19m

San Juan Luis Munoz Marin Intl

Mon 10/6

1:05 am-9:43 am

2 stops8h 38m

$309

BuffaloSan Juan

BUF - SJU

BUFSJU

Buffalo

Sun 9/14

5:30 pm-12:45 am

1 stop7h 15m

San Juan Luis Munoz Marin Intl

Tue 9/23

8:00 am-8:45 pm

1 stop12h 45m

$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 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 November 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 Tuesday. momondo users have found tickets for Tuesday departures for as low as $374. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday 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 $468.

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

The cheapest time of day to fly to San Juan Luis Munoz Marin Intl Airport is in the evening when flights can be purchased for as low as $325. Flights at noon are often more expensive with an average ticket price of $468.

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 $400 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 $339 on momondo.

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

As of September 2025, prices for Buffalo to San Juan Luis Munoz Marin Intl Airport flights are approximately 14% 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

Direct flights

None
There are no direct flights from Buffalo to San Juan Luis Munoz Marin Intl Airport. There are no popular flight routes from Buffalo to San Juan Luis Munoz Marin Intl Airport.
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  • 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 6h 53m 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 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
FrontierPriceFrom $135Free CancellationRating
5.8
3,187 reviews
Search Frontier flights
DeltaPriceFrom $167Free CancellationRating
7.9
7,966 reviews
Search Delta flights
SouthwestPriceFrom $244Free CancellationRating
8.0
4,244 reviews
Search Southwest flights
JetBluePriceFrom $261Free CancellationRating
7.2
2,914 reviews
Search JetBlue flights
American AirlinesPriceFrom $265Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $290Free CancellationRating
7.4
8,944 reviews
Search United 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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