BUF - SJU

$107 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 1/31. 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.
Travelers love KAYAK
41 299 237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$182
Typical prices: $282-$562
Frontier
Mon 2/9Sat 2/14
BUF - SJU • 1 stop
Cheapest non-stop
$315
JetBlue
Mon 3/30Fri 4/3
BUF - SJU • Non-stop
Top airlines
Frontier
Cheapest • from $182 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 12% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 25% price drop
March
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Nonstop flights
3 days a week
There are direct flights from Buffalo to San Juan 3 days a week: Mon, Fri, Sat.
Direct flights
Direct flights
Direct flights
Direct flights
Start a new search
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

Mon, Feb 9 - Sat, Feb 14
Frontier Logo
7:31 pm - 12:57 pm
BUF
-
SJU
16h 26m
1 stop
Frontier Logo
1:52 pm - 10:49 am
SJU
-
BUF
21h 57m
1 stop
$182Frontier
Thu, Feb 19 - Sun, Mar 1
Frontier Logo
11:07 am - 2:25 am
BUF
-
SJU
14h 18m
1 stop
Frontier Logo
3:53 am - 10:49 am
SJU
-
BUF
7h 56m
1 stop
$203Frontier
Mon, Feb 23 - Sat, Feb 28
Frontier Logo
11:17 am - 2:53 am
BUF
-
SJU
14h 36m
1 stop
Frontier Logo
5:25 pm - 9:52 am
SJU
-
BUF
17h 27m
1 stop
$204Frontier
Mon, Mar 9 - Wed, Mar 25
Delta Logo
3:56 pm - 11:59 pm
BUF
-
SJU
8h 03m
1 stop
Delta Logo
5:10 pm - 12:14 am
SJU
-
BUF
7h 04m
1 stop
$212Delta
Tue, Mar 3 - Tue, Mar 10
JetBlue Logo
7:30 pm - 3:51 am
BUF
-
SJU
7h 21m
1 stop
JetBlue Logo
10:59 pm - 9:35 am
SJU
-
BUF
10h 36m
1 stop
$213JetBlue
Sun, Feb 22 - Thu, Feb 26
Frontier Logo
6:07 pm - 2:29 am
BUF
-
SJU
7h 22m
1 stop
Frontier Logo
5:25 pm - 9:57 am
SJU
-
BUF
17h 32m
1 stop
$217Frontier
Sat, Feb 28 - Thu, Mar 5
Southwest Logo
1:20 pm - 8:55 pm
BUF
-
SJU
6h 35m
1 stop
Southwest Logo
6:00 am - 11:40 am
SJU
-
BUF
6h 40m
1 stop
$226Southwest
Sun, Mar 1 - Wed, Mar 4
JetBlue Logo
7:35 pm - 3:51 am
BUF
-
SJU
7h 16m
1 stop
JetBlue Logo
6:10 am - 12:44 pm
SJU
-
BUF
7h 34m
1 stop
$227JetBlue
Sun, Feb 22 - Thu, Feb 26
American Airlines Logo
11:23 am - 11:40 pm
BUF
-
SJU
11h 17m
1 stop
American Airlines Logo
2:30 pm - 11:31 pm
SJU
-
BUF
10h 01m
2 stops
$232American Airlines
Fri, Feb 6 - Mon, Feb 9
Frontier Logo
7:31 pm - 11:59 pm
BUF
-
SJU
27h 28m
1 stop
Frontier Logo
3:53 am - 6:21 pm
SJU
-
BUF
15h 28m
1 stop
$237Frontier
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.

How much is a round-trip flight from Buffalo to San Juan Luis Munoz Marin Intl Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Buffalo to San Juan Luis Munoz Marin Intl Airport departing in February.

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 $290 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $526 and $452 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 $351 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 3 weeks before departure, which saves you about 12% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Good to know

Low seasonNovember
Cheapest flight$106
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly and prices are also 14% 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 $106 for a one-way ticket and $182 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.

  • What is the most popular layover when flying to San Juan from Buffalo?

    New York is the most popular layover city among KAYAK users traveling from Buffalo to San Juan.

  • 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 $482 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 $323 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 $395 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

Friday

JetBlue

JetBlue

Saturday

JetBlue

JetBlue

See more direct flights

Direct returns

San Juan Luis Munoz Marin Intl to Buffalo

Monday

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 4266 reviews
7.5Entertainment
8.1Boarding
7.0Food
8.6Crew
8.0Comfort
Airline reviews

Great flight but super high price. Glad it was a business trip and not personal

10.0 ExcellentPieter, Jan 2026
LGB - DAL
Read more Southwest reviews

Great flight but super high price. Glad it was a business trip and not personal

On time. Friendly staff. Took to long to pre bord all the specialty groups. Cramped small plane

The seats were comfortable, and the boarding process was pretty smooth.

3 hour delay. Had to change plans and was still delayed.

The staff was very friendly, professional, and courteous. The overall flight was a great experience.

The crew canceled the complementary snack and drink in anticipation of turbulence that never materialized. I was counting on the drink (water) to take the the doses of medication - prescribed for my heart condition - that were due during the flight. Since no snack or meal was served on this flight, I cannot rate the food quality. Otherwise, this flight was excellent.

Departure was delayed more than 1/2 hour while we waited for luggage (only) transfer from another flight/plane. Once approved for takeoff, the flight was excellent.

We got exit row seats both flights. Everything was running on time

The flight crew was extremely rude and especially not helpful when our flight was delayed.

Pretty seamless, just a tad bit late in taking off and landing.

The entertainment screens were not working and there was no air condition the entire flight. Very uncomfortable.

It was Delta, but the flight attendants were stressful and disrespectful. I am a diamond member a travel weekly. I have not had a negative thing to share in quite some time. But this was noticeable.

The plant way delayed departing by 3 hours. It was an old airplane with broken seats and armrests. The bathroom made a hollering sound. A really crappy flight experience and travel day all around.

None of the airplane features were available during the flight.

Original flight was cancelled and when i was rebooked by the airline, they couldn't seat me in the same type of seat as I had originally booked (went from window/aisle to middle/middle and one was a bulkhead seat, and other wasn't in the same class)

My flight was cancelled with no explanation after I had already cleared security. I was given 4 options to rebook, only one being non-stop like I had paid for. I grabbed it. It was 4 plus hours later and then took off even later. Biggest complaint is that I booked early and had an aisle seat. They gave me a "window" seat in front of the exit row, so the seat did not decline. I weigh all of 103 #s and it was tight for me! For what I paid, I feel I was kind of ripped off. I think they should have given me the empty comfort seat for the inconvenience. There was no apology nor any explanation as to why the flight was cancelled. My guess is it benefitted Delta in some way.

Very smooth, on-time, and pleasantly uneventful flight. The team at the gate and on board were professional and genuinely courteous. The pilot kept us well updated throughout, and both takeoff and landing were steady and enjoyable without any drama. Just a good, solid flight. Thank you! 💗

Plenty of leg room, temperature was great and staff was excellent. Would do it more often.

I truly love flying with Delta. They have always treated me with the upmost respect

The aircraft interior is old and tired on this aircraft. The entertainment system never worked despite the crews attempt to reset the system.

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.

On the plus side, crew was attentive, drinks were cold, and in-flight entertainment selection was better than some other airlines. On the negative aide, Plane was delayed almost an hour, either no announcements from the gate crew. Biscoff cookies are gross, appreciate airlines that give a choice. Also, crew had no personality or enthusiasm at all.

Tell the crew (when boarding) to yell at the imbeciles blocking us from walking up to scan. I promise everyone crowds around and half of us (most the time I’m group 4) have to push our way through. Your staff is awesome, the public - not so much-

Baggage handling poor. Second time this has happened. My bag went to San Francisco instead of Fiji. No apology. Luckily Nadi airport staff are fantastic. My bag arrived in Fiji the next day.

Disliked having to wait a little longer to disembark from the plan when we landed in London

Food should be better quality. Video screens have poor resolution and the library of movies is poor. The other airlines are much better.

They only offered water for Group 6. Awful announcements from the Crew. Couldn't understand a single word. Barely came by for the trash afterwards. Man, I love water for a premium flight. Wow. Water in a cup.

Great. Quick and quiet and east. The breakfast choices were a welcome surprise!

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.

Worst flight experience ever flights canceled. JetBlue told us just did not even bother standing in line to come back in one and a half hours then without any information we had to go pick up all of our luggage and spend over $2000 in accommodation just to get home. JetBlue said that the next flight available for us to get home would be three days later. Absolutely absurd hasn’t offered to give us any compensation do not fly JetBlue horrible company. They said it was based on the weather and the weather is great in all locations that we would’ve been flying to total hoax. I think it’s a conspiracy theory.

flight was delayed for hours with no explanation. The plane was a very old aircraft.

Good for a budget airline! It was easy to get on, staff was really nice. Can’t say anything about the food or entertainment because it wasn’t available, which is fine.

I am writing to express my disappointment with my recent Frontier Airlines flight. I was charged $99 at the gate because my bag was said to be too large, yet once onboard there was no available overhead bin space, and I was required to place the bag under the seat in front of me anyway. This made the charge feel unnecessary and unfair. Additionally, before the flight even took off, I was asked to move from the seat I paid for into a middle seat so another passenger and her cat could have my seat to themselves. I was not offered compensation or an explanation for being moved from a paid seat. Between the unexpected bag fee and being forced to give up my seat, this experience fell well below acceptable customer service standards. I would appreciate a review of this situation and appropriate compensation.

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

It was ok. It was expensive to check 2 bags ($75.00 per bag), and then it took a long time to wait for shuttle to take us from one terminal to the terminal where the plane was taking off at LAX. And all of this for a flight where we had to pay for any food or drink that was not water.

It didn’t happen. I booked it and then was told it wasn’t available and then forced to pay far higher prices for a worse option

A 630departure flight Delayed 6hours! They changed my gate, I moved to the new gate. Had our flight on the screen for 12noon departure. I go get above to eat, check screen again and the flight was gone, no notice no announcement, nothing!! They sent my bag on the flight I wasn’t on, got it back to me 3days later. Thank goodness they did refund my money but I will NEVER fly them again.

Due to weather, my flight was delayed, further delayed, then canceled. I eventually got through to a support person who helped me find a different route out of MSP, but to get to DIA, they didn't want to, but eventually did help with the connection ticket purchase. But even this replacement flight was delayed time and time again, and I would have missed my connecting flights and I didn't want to get stuck in a layover city, so after 12 hours at the airport with two young boys who were very tired, we just cancelled our plans and spent the week at home, instead of Nana's.

Plane and crew on board were fine. Everything else was terrible.

The third party booking with cheapflightsfares was awful. Kayak should NOT partner with them. They sold me a bundle including seat selection and carry-on, but did not book the carry-ons with Frontier, so I’m out of pocket for $414 more while I await resolution.

This company socks. It's fraud. They canceled our flight yesterday, and today we were late because of a really long line at the check in bag. At the rebook station, there was ton of people. The workers were all rude. I am gonna make a report to FTC.

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

Information on your arrival and departure airports