BUF - SJU

$105 Find Cheap Flights from Buffalo to San Juan

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Buffalo to San Juan departing on 4/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to San Juan Luis Munoz Marin Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Buffalo to San Juan.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Buffalo to San Juan.
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Everything you should know

Cheapest round-trip
$223
Overall average: $291
Frontier
Sat 5/30Tue 6/2
BUF - SJU • 1 stop
Cheapest non-stop
$285
JetBlue
Fri 4/3Fri 4/10
BUF - SJU • Non-stop
Nonstop flights
4 days a week
Mon, Wed, Fri, Sat
You can fly direct with JetBlue. Average duration is 3h 55m
Direct flights
Direct flights
+1
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Direct flights
Direct flights
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Top airlines
Cheapest • from $223 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
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Top layover airports
Cheapest • Avg $271 (round-trip)
Shortest trip • 6h 20m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 7 weeks in advance save around 9% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 28% price drop
Most popular
Good to know
Good to know
+1
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Good to know
Good to know
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to San Juan!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Buffalo to San Juan (BUF-SJU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Buffalo to San Juan that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Buffalo to San Juan

Sat, May 30 - Tue, Jun 2
Frontier Logo
7:52 pm - 8:04 am
BUF
-
SJU
12h 12m
1 stop
Frontier Logo
3:03 am - 6:59 pm
SJU
-
BUF
15h 56m
1 stop
$223Frontier
Sun, Apr 26 - Wed, Apr 29
Frontier Logo
3:58 pm - 2:06 pm
BUF
-
SJU
22h 08m
1 stop
Frontier Logo
3:21 am - 7:13 pm
SJU
-
BUF
15h 52m
1 stop
$228Frontier
Mon, May 18 - Fri, May 29
Frontier Logo
7:31 pm - 2:08 am
BUF
-
SJU
6h 37m
1 stop
Frontier Logo
6:09 pm - 6:59 pm
SJU
-
BUF
24h 50m
1 stop
$231Frontier
Tue, Apr 28 - Wed, May 6
American Airlines Logo
5:30 am - 3:20 pm
BUF
-
SJU
9h 50m
2 stops
American Airlines Logo
6:00 am - 3:29 pm
SJU
-
BUF
9h 29m
1 stop
$232American Airlines
Sun, Apr 26 - Fri, May 1
Frontier Logo
8:18 pm - 11:43 pm
BUF
-
SJU
27h 25m
1 stop
Frontier Logo
3:19 pm - 10:49 am
SJU
-
BUF
19h 30m
1 stop
$234Frontier
Sat, May 2 - Wed, May 6
American Airlines Logo
10:44 am - 10:05 pm
BUF
-
SJU
11h 21m
1 stop
American Airlines Logo
6:00 am - 3:29 pm
SJU
-
BUF
9h 29m
1 stop
$236American Airlines
Wed, Apr 8 - Thu, Apr 16
Frontier Logo
7:44 pm - 4:29 pm
BUF
-
SJU
20h 45m
1 stop
Frontier Logo
3:19 pm - 9:57 am
SJU
-
BUF
18h 38m
1 stop
$239Frontier
Tue, Apr 28 - Wed, May 6
Delta Logo
6:05 am - 12:52 pm
BUF
-
SJU
6h 47m
1 stop
Delta Logo
2:45 pm - 11:37 pm
SJU
-
BUF
8h 52m
1 stop
$252Delta
Sun, May 17 - Sun, May 24
Frontier Logo
8:49 pm - 8:04 am
BUF
-
SJU
11h 15m
1 stop
Frontier Logo
9:00 am - 8:04 pm
SJU
-
BUF
11h 04m
1 stop
$254Frontier
Fri, Apr 3 - Tue, Apr 7
Multiple Airlines Logo
7:17 am - 11:09 am
BUF
-
SJU
3h 52mnonstop
Multiple Airlines Logo
3:16 am - 10:27 am
SJU
-
BUF
7h 11m
1 stop
$259Multiple Airlines
Booking Insights

KAYAK's insights & trends for Buffalo to San Juan flights

Get data-powered insights and trends into flights from Buffalo to San Juan to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Buffalo to San Juan Luis Munoz Marin Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Buffalo to San Juan Luis Munoz Marin Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Buffalo to San Juan Luis Munoz Marin Intl Airport is September, where tickets cost $273 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $547 and $419 respectively.

Can I save money by flying with a layover from Buffalo to San Juan Luis Munoz Marin Intl Airport?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $356 on average.

How far in advance should I book a flight from Buffalo to San Juan Luis Munoz Marin Intl Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Buffalo to San Juan Luis Munoz Marin Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Buffalo to San Juan Luis Munoz Marin Intl Airport, you should book around 7 weeks before departure, which saves you about 9% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

Good to know

Low seasonNovember
Cheapest flight$105
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly and prices are also 11% lower on average.
Flight from Buffalo to San Juan

When to book flights from Buffalo to San Juan

Are your dates flexible? Find out the best times to travel from Buffalo to San Juan based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Buffalo to San Juan flights

  • What is the cheapest flight from Buffalo to San Juan Luis Munoz Marin Intl Airport?

    In the last 3 days, the lowest price for a flight from Buffalo to San Juan Luis Munoz Marin Intl Airport was $105 for a one-way ticket and $223 for a round-trip.

  • Do I need a passport to fly between Buffalo and San Juan?

    Yes

  • Which airports will I be using when flying from Buffalo to San Juan?

    Buffalo airport is called Buffalo and the only airport in San Juan is San Juan Luis Munoz Marin Intl.

  • Which airlines offer Wi-Fi service onboard planes from Buffalo to San Juan?

    Only JetBlue offers inflight Wi-Fi service on the Buffalo to San Juan flight route.

  • Which aircraft models fly most regularly from Buffalo to San Juan?

    The Airbus A320-100/200 is the aircraft model that flies most regularly on the Buffalo to San Juan flight route.

  • Which airline alliances offer flights from Buffalo to San Juan?

    Star Alliance, oneworld, and SkyTeam are the airline alliances operating flights between Buffalo and San Juan, with Star Alliance being the most commonly used for this route.

  • On which days can I fly direct from Buffalo to San Juan?

    You can catch a nonstop flight from Buffalo to San Juan on Monday, Wednesday, Friday, and Saturday.

  • Which is the best airline for flights from Buffalo to San Juan, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Buffalo to San Juan are Southwest and Delta. With an average price for the route of $448 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $293 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Buffalo to San Juan?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Buffalo to San Juan.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Buffalo to San Juan?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Juan from Buffalo is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Buffalo to San Juan?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Juan with an airline and back to Buffalo with another airline. Booking your flights between Buffalo and SJU can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Buffalo to San Juan?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Juan from Buffalo up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Buffalo to San Juan Luis Munoz Marin Intl Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $158 or less one-way and $320 or less round-trip.

Prefer to fly direct from Buffalo to San Juan?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Buffalo to San Juan Luis Munoz Marin Intl.
Find which airlines fly direct from Buffalo Airport to San Juan Luis Munoz Marin Intl Airport, which days they fly and book direct flights.

Direct departures

Buffalo to San Juan Luis Munoz Marin Intl

Monday

JetBlue

JetBlue

Wednesday

JetBlue

JetBlue

Friday

JetBlue

JetBlue

Saturday

JetBlue

JetBlue

See more direct flights

Direct returns

San Juan Luis Munoz Marin Intl to Buffalo

Monday

JetBlue

JetBlue

Wednesday

JetBlue

JetBlue

Friday

JetBlue

JetBlue

Saturday

JetBlue

JetBlue

See more direct flights

Reviews of the top 5 airlines serving from Buffalo to San Juan

 
See real verified KAYAK customer reviews for airlines flying from Buffalo to San Juan. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Buffalo to San Juan? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4320 reviews
8.0Comfort
8.1Boarding
8.6Crew
7.5Entertainment
7.0Food
Airline reviews

We had a 5 hour delay on the tarmac in Baltimore

2.0 MediocreDavid, Mar 2026
ALB - BWI
Read more Southwest reviews

We had a 5 hour delay on the tarmac in Baltimore

Long layover between flights to Long Island from BWI - need better coordination between flights

I elected to pay for the upgrades and found very little difference

The new seating arrangement is so over priced for what you get.

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

No food or entertainment, just a quick 40 minute flight. A little bumpy due to Santa Ana winds but pilot has no control over that. Good flight and landing!

Good but I prefer choose your own seat. With the new assigned seats they should board from the back I see no advantage to this new boarding. Just like every other airline

I realize they are still working out kinks with the new boarding process, but by the time I boarded in group 5, most of the bins were full. All airlines should better enforce small bags and jackets going under the seats until everyone has boarded.

WiFi was not working and didn’t have a beverage service

Snacks are always pretzels. Why can't you also offer peanuts ?

Love delta smaller commuter plane so no entertainment and paid wifi on MKE-LGA leg was extremely unreliable and slow

Delayed. Hot. Passenger next to me was so large I couldn’t move.

The flight went very well, but the flight attendants didn't serve and food or drinks other than 1st class due to rough air but to be honest it wasn't that bumpy and I felt that they could've at least offered water and coffee perhaps. Also serving 1st class only is a bad look. I've been in 1st class many times and I would've felt that if the turbulence was too rough for the main cabin, it would be too rough for 1st class too.

There was an unruly family behind us that made the short flight miserable!!! The cabin crew did nothing to contain it.

My seatback screen didn’t work so that sucked because that’s what I was going to do on the plane.

The whole experience was excellent. As it most often is with Delta

There’s not much to say about a one hour flight. This is a connection from LA to RNO that I missed the previous night due to a mechanical check delay on my originating flight from JFK to LAX. The short flight itself was fine. Instructions from the pilot and crew were per usual. The coffee was barely lukewarm, which possibly was purposeful so we would down it quickly. Bags were already on carousel upon reaching baggage claim, which was excellent.

Boarding and crew were fantastic, but I paid for a window seat with no window. Seat 11D on a CRJ-900 apparently does not have a window. Lesson learned.

It was good. The leg room was not great in Row 1.

Delta flights recently are always delayed AND at jfk tney get the gates further away (need To walk 20’ to get to them/all the way at the end of the terminal). Not sure whats happening but price doesnt match experience!

Automated scanning was slow and somewhat haphazard. Too many people were unfamiliar with the tech and were forced to learn on the fly. The hands off approach of the gate staff made it more uncomfortable. This needs work. Overall the flight and cabin crew were excellent.

Crew were fantastic and so catering and wonderful! Full score for the entire crew!

Terrible. They canceled our early morning flight after midnight on the day of and had no available flights to rebook my family on for the next 72 hours. Yet they still had other flights that were not cancelled from JFK so it couldn’t be based on the weather. It felt like they canceled the flight based on it not being profitable enough for them. I am not interested in traveling with the again. The absolute worse customer service and lack of accountability.

First time flying with JetBlue and never again. I went to the counter to request meet and assist because I'm 74 and my wife is 79. I walk with a cane and my wife is handicapped and has her own wheel chair. I told the agent that my wife and luggage was at the entrance door. The ticketing agent said to me that they don't offer meet and assist. I need to bring them our luggage and then go back and get my wife in order to get my boarding pass. As I went back to get my luggage a Southwest agent along with a TSA agent recognized the situation and came over and took my wife and luggage to the JetBlue ticketing counter alongside the line and told the JetBlue agent to issue to take our luggage as soon as they could.

Flight was fine, price was good but food onboard was abysmal. I was on there for breakfast and lunch and dinner 845am EST to 845pm GMT and all I got was a yoghurt parfait, fruit and a piece of cake. Later snacks included an ice-cream brownie and a pizza twist. I was hungry by the time I landed and the airport amenities were closed. Not happy.

Not a pleasant experience, service was poor. Didn't like it

Plane was in bad shape. TV’s and WiFi didn’t work. Plane need a refresh. Not enough room for bags.

Everything was great. I liked the text updates so that I never miss a gate change & I have all the latest info.

No internet on a flight over three hours in this age is criminal. Staff inattentive and dismissive

JetBlue is always consistent and great, the food is limited in selection, but at least you can grab as much as you want on snacks and drinks at the Blue Locker.

Not really sure I enjoyed the flight at all. The flight attendants seemed a little tired and rude at times. The snacks were lacking in taste and sustenance. The flight was incredibly turbulent for three plus hours and the pilot had to do a second pass to land at our final destination because he was coming in so fast. He must have taken a short cut and because of it we had to suffer the violent turbulence and the dropping down. It had to be one of if not the worse flights I have ever been on and have traveled vastly all over the world.

Aging planer and NO wifi on a 14 hour day flight. Unless you are retired or don't need to work or be in touch with the world... The lack of Wifif really ruined the flight. And the old plane - really showing it's age, wasn't great

There was no inflight service. Once we landed we were delayed to find a gate for an hour and a half which was 1/2 the total time in the air.

Snow delayed boarding several times, which I understand happens. Issue I had was that after we did board, pilot told us we were going to roll out to be de-iced, then on our way. We were de-iced once, taxied to the tarmac and then stopped. Sat for another 30 minutes or so, the another de-icing. Then we rolled out to a parking spot, only to sit for another hour due to a traffic stop in DCA, which I'm confident they knew would happen before we boarded. Pilot gave no updates other than we had to hold, attendants did speak to the crew, but when asked, said the pilot would be updating us. We on the ground in the plane waiting for over 2 hours. They did communicate that bathrooms would be open, but no other news until we left. Would have been better to be up front about status.

It was good experience this time. The flight was on time.

The gate agent had a really bad attitude and refused to help me get on the standby list. She just handed me a card and said I needed to call a number. I asked her to help with the AA app on my phone and she just shrugged and said she didnt know. After a few phone calls, I eventually just went to a different gate agent on the other side of the terminal and got the help I needed.

One day, I do so hope for a gluten free snack! Seems like with the rest of the world FINALLY figuring out what gluten free is, American Airlines would too. Fingers crossed!!

I would like the crew to talk LESS over the PA and specifically about credit card offers. I am trying to work, sleep, watch a movie and the PA was booming about a credit card offer. Could we go back to the days when the customer was more important than selling a credit card?

There were no TV screens - even in Business class. 5 delays, and only given $12 meal voucher! Terrible!

My seat tv didn’t work the whole trip. And the seat space is too small despite being seated at the front.

More inflight connection. And leg space is horrible. And the paying for baggage I'd ridiculous!!!

My flight was originally from SAT to MCO connecting from MCO to ORD. We got diverted to ATL and than Frontier staff there was sooo un helpful first they said they couldn’t give us any accommodation since our flight first got delayed that cancelled and now it’s 221am and I am still in ATL since they said they need to create a new flight my final destination is ORD and I have been delayed twice and cancelled. With no real help the frontier app didn’t work no email updates over all such a horrible experience

There's no seats that lean back with little leg space i wad uncomfortable the entire flight. Your charges for extra baggage is despicable and costly!!

Remind customers of the need to have passport or new ID for boarding.

Flight was canceled. Most upsetting was message from Kayak, stating that the flight was canceled and click with Kayak for details regarding rebook, refund details. THERE'S NO INFORMATION PROVIDED BY KAYAK EXCEPT THAT FLIGHT IS CANCELED. AND NOW THIS SURVEY TO FIND OUT HOW WAS THE FLIGHT !!!!!!!

The flight never took off and we spent 7 hours at the airport

Gate not determined until I got to the airport - hard to plan the trip to the airport.

Our flight was canceled. I will never use Kayak nor Frontier for travel again. The entire experience was a headache.

Frontier.. nickel and dime add-ons. Flight late, on time, late again, last minute gate change, arrival gate required a shuttle to the terminal. They sure keep you guessing.. if you like a little chaos and airport anxiety, this is the airline for you!

This is my second time flying with Frontier. My current experience was very favorable. The staff from the gate to the plane was friendly, warm and professional. The food options lacked in my opinion. This area needs some attention in my opinion.

Everything you need to know for your flight from Buffalo to San Juan

Information on your arrival and departure airports