SJU - BUF

$126 Find Cheap Flights from San Juan to Buffalo

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Juan to Buffalo departing on 8/24. 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 Buffalo

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Juan to Buffalo, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Juan to Buffalo, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$212
Typical prices: $387-$261
Frontier
Fri 5/29Mon 6/8
SJU - BUF • 1 stop
Cheapest non-stop
$262
JetBlue
Fri 6/5Mon 6/8
SJU - BUF • Non-stop
Nonstop flights
4 days a week
Mon, Wed, Fri, Sat
You can fly direct with JetBlue. Average duration is 4h 49m
Direct flights
Direct flights
+1
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Direct flights
Direct flights
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Top airlines
Cheapest • from $212 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
+1
Top layover airports
Cheapest • Avg $215 (round-trip)
Shortest trip • 7h 08m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 20% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 37% 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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We hope you love your trip to Buffalo!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Juan to Buffalo 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 San Juan to Buffalo

Fri, May 29 - Mon, Jun 8
Frontier Logo
6:00 am - 6:59 pm
SJU
-
BUF
12h 59m
1 stop
Frontier Logo
7:52 pm - 1:16 pm
BUF
-
SJU
17h 24m
1 stop
$212Frontier
Fri, May 29 - Mon, Jun 8
Multiple Airlines Logo
6:00 am - 6:59 pm
SJU
-
BUF
12h 59m
1 stop
Multiple Airlines Logo
7:16 am - 11:11 am
BUF
-
SJU
3h 55mnonstop
$239Multiple Airlines
Tue, Jun 23 - Tue, Jun 30
Frontier Logo
8:00 am - 8:17 pm
SJU
-
BUF
12h 17m
1 stop
Frontier Logo
9:02 pm - 2:09 am
BUF
-
SJU
29h 07m
1 stop
$256Frontier
Tue, Aug 4 - Mon, Aug 10
Frontier Logo
8:00 am - 8:16 pm
SJU
-
BUF
12h 16m
1 stop
Frontier Logo
7:57 pm - 11:29 pm
BUF
-
SJU
27h 32m
1 stop
$258Frontier
Fri, Jun 5 - Mon, Jun 8
JetBlue Logo
6:20 pm - 11:09 pm
SJU
-
BUF
4h 49mnonstop
JetBlue Logo
7:16 am - 11:11 am
BUF
-
SJU
3h 55mnonstop
$262JetBlue
Fri, May 29 - Sun, May 31
Multiple Airlines Logo
6:20 pm - 11:09 pm
SJU
-
BUF
4h 49mnonstop
Multiple Airlines Logo
8:49 pm - 8:04 am
BUF
-
SJU
11h 15m
1 stop
$269Multiple Airlines
Fri, May 22 - Wed, May 27
JetBlue Logo
6:20 pm - 11:09 pm
SJU
-
BUF
4h 49mnonstop
JetBlue Logo
7:16 am - 11:11 am
BUF
-
SJU
3h 55mnonstop
$275JetBlue
Thu, Jul 9 - Sat, Jul 18
Frontier Logo
9:24 am - 7:06 pm
SJU
-
BUF
9h 42m
1 stop
Frontier Logo
10:05 pm - 7:57 am
BUF
-
SJU
9h 52m
1 stop
$276Frontier
Fri, Jul 31 - Tue, Aug 4
Frontier Logo
6:31 pm - 9:14 pm
SJU
-
BUF
26h 43m
1 stop
Frontier Logo
9:02 pm - 11:29 pm
BUF
-
SJU
26h 27m
1 stop
$284Frontier
Wed, Jul 1 - Wed, Aug 12
Multiple Airlines Logo
6:20 pm - 10:58 pm
SJU
-
BUF
4h 38mnonstop
Multiple Airlines Logo
7:57 pm - 7:57 am
BUF
-
SJU
12h 00m
1 stop
$286Multiple Airlines
Booking Insights

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

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

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

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Juan Luis Munoz Marin Intl Airport to Buffalo, 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 San Juan Luis Munoz Marin Intl Airport to Buffalo is September, where tickets cost $205 (return) on average. On the other hand, the most expensive months are December and November, where the average cost of round-trip tickets is $413 and $409 respectively.

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

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.

No, with an average price for the route of $410, prices are generally cheapest when you fly direct.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Juan Luis Munoz Marin Intl Airport to Buffalo, 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 San Juan Luis Munoz Marin Intl Airport to Buffalo, you should book around 4 weeks before departure, which saves you about 20% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 11 weeks before departure.

Good to know

Low seasonSeptember
Cheapest flight$126
Best time to beat the crowds with an average 37% drop in price.
Most popular time to fly with an average 3% increase in price.
Flight from San Juan to Buffalo

When to book flights from San Juan to Buffalo

Are your dates flexible? Find out the best times to travel from San Juan to Buffalo 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 San Juan to Buffalo flights

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

    In the last 3 days, the lowest price for a flight from San Juan Luis Munoz Marin Intl Airport to Buffalo was $126 for a one-way ticket and $212 for a round-trip.

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

    Yes, you'll most likely have to show a valid passport before boarding the plane in San Juan and on arrival in Buffalo.

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

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

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from San Juan to Buffalo are Southwest and Delta. With an average price for the route of $395 and an overall rating of 7.9, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $294 and an overall rating of 7.9.

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

    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 San Juan to Buffalo.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Buffalo from San Juan 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 San Juan to Buffalo?

    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 Buffalo with an airline and back to San Juan with another airline. Booking your flights between San Juan and BUF 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 San Juan to Buffalo?

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

  • Looking for a cheap flight? 25% of our users found flights on this route for $168 or less one-way and $410 or less round-trip.

Prefer to fly direct from San Juan to Buffalo?

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

Direct departures

San Juan Luis Munoz Marin Intl to Buffalo

Monday

JetBlue

JetBlue

Wednesday

JetBlue

JetBlue

Friday

JetBlue

JetBlue

Saturday

JetBlue

JetBlue

See more direct flights

Direct returns

Buffalo to San Juan Luis Munoz Marin Intl

Monday

JetBlue

JetBlue

Wednesday

JetBlue

JetBlue

Friday

JetBlue

JetBlue

Saturday

JetBlue

JetBlue

See more direct flights

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

 
See real verified KAYAK customer reviews for airlines flying from San Juan to Buffalo. 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 San Juan to Buffalo? 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.
7.9
SouthwestOverall score based on 4305 reviews
8.6Crew
7.0Food
8.0Comfort
8.1Boarding
7.5Entertainment
Airline reviews

Truly terrible. Will never willingly fly southwest again. Seats are worse than before they switched to assigned seating. One flight attendant was the opposite of helpful (rude, unhelpful, dismissive, and as my stranger seatmate said unprompted: a total prick). This caused me, 15 minutes into the flight, to book an alternate return flight home on a competing airline (first class 1.2k purchase instead of my existing planned flight) just so I would not have to ever be on that aircraft, with that terrible service person, with those horrific seats ever again.

2.0 MediocreJoshua, May 2026
TPA - LAS
Read more Southwest reviews

Truly terrible. Will never willingly fly southwest again. Seats are worse than before they switched to assigned seating. One flight attendant was the opposite of helpful (rude, unhelpful, dismissive, and as my stranger seatmate said unprompted: a total prick). This caused me, 15 minutes into the flight, to book an alternate return flight home on a competing airline (first class 1.2k purchase instead of my existing planned flight) just so I would not have to ever be on that aircraft, with that terrible service person, with those horrific seats ever again.

Not having a five hour delay with little notice! The crew was very kind, though, and just as tired as we passengers were. The flight didn't depart until nearly 1 am...and no reason was ever given.

The entire experience from boarding to landing was amazing! The crew were very friendly. Will definitely be back.

no service at all due to turbulence. they should've at least given us snacks, there were only 10 people on the entire flight.

First time I've had to use the disabled accommodations. And I could not have had a better experience with Southwest, i was having trouble getting from one terminal to another due to my heart failure. And the next thing I know a Southwest agent had made sure. I had a wheelchair at all my flights. Can't thank them enough.

Delayed flight, lack of information, boarding process is a mess as is the carryon luggage causing issues when leaving the plane….just a poor experience.

Comfortable. Easy. No problems. Just wish they had gf options for snacks.

The crew was very kind and made going to Hawaii relaxing and fun to look forward to! Thank you Southwest for a pleasant flight!

This leg was much better, but we did have to have a 3 hour lay o er after coming from a very exhausting hiccup with our flight from BNA to Den

We waited in the airplane for over 45 min for a southwest employee to make the flight. This cause over half the plane to miss their connecting flight in Denver. When we confronted the desk upon arrival, they told us the only flight they had was the next day leaving at 8:50 pm!!! Or they offered to get us to Burbank or LA, but after that we were on our own to get back to Santa Barbara. I paid for a flight from sba to bna bna to sba. My re entry into mom mode has been 💯 rough because of southwest mistake with my flight. And now I’m leaving to Reno tomorrow for a vballl tournament and just discovered that my leg in Vegas has me and my 3 kids on a stand by flight even though I had booked these ticket last year November!! Do better southwest!

Seats were comfortable, 8 hours. One flight attendant was not appropriate in his verbal response: "Please, DON'T touch me.", after being tapped near his elbow after being made unaware he skipped serving me & had passed further down the aisle.

Very easy to use and convenient, you can perform any action within the same portal

The baggage belt was not updated on the Delta App and was displayed on the wrong belt board. Was not expecting this to happen.

Landed without a gate ready. Plane is extremely old and dirty.

Pilots lied about waiting on “paperwork”. Sat in the plane for over an hour, waiting on some papers to be printed according to the pilot and then all of a sudden he says good news maintenance is finally on their way. Maybe they can fix it before we get our paperwork. Ended up missing my connection in LaGuardia and as a result, had a fly home to Lexington instead of the Louisville airport. Then paid $100 to uber to Louisville since it was midnight by the time I got in. I wish they would just be transparent with passengers sometimes and not try to beat around the bush on why things are delayed.

The flight was delayed 90 minutes The Gate was wrong The Restroom on Aircraft was not clean There was a half used water bottle in my seat

Too many people are taking up space in the overhead bins with their extra piece of luggage. Since they cannot fit their backpacks or extra luggage piece under the seat in front of them, they store it in the overheads and thus taking up room for other passengers. It wasn’t only one or two persons; more like 12 or 13 passengers.

Wonderful crew, great movie selection and good food. I prefer Airbus to Boeing, much more comfortable

Got to fly my favorite plane, the Boeing 767-400ER, to Milan. The soft blush pink mood lighting during meal service was very beautiful and gorgeous. The service was top-notch, and our flights were on time. I highly recommend Delta.

Cabin was not pressurized properly. Several passengers had respiratory difficulties.

Boarding gate at LAX was too crowded—two gates next to one another

It was really a terrific experience both going and returning on AA. Staff and crew were professional.

This short sector between Miami and JFK was undertaken purely for business purposes, with efficiency as the primary objective rather than a full inflight experience. Overall, the journey met its intended purpose; however, the ground experience at Miami stood out significantly. During check-in, I was unable to link my frequent flyer details from Qatar Airways (oneworld alliance) through either the self-service kiosk or web check-in. The situation was handled exceptionally well by the check-in agent, who demonstrated remarkable ownership. She coordinated across multiple counters, ensured my frequent flyer number was correctly reflected, reissued the boarding pass, and confirmed that mileage accrual would be recognized. Additionally, she ensured the boarding pass reflected priority status, enabling a seamless priority check-in experience without delays. This level of proactive service was both commendable and impactful. Boarding and the inflight experience, operated by American Airlines under a codeshare arrangement, were efficient but largely transactional. While operational delivery was smooth, there was no visible recognition of oneworld frequent flyer status onboard. In comparison to the consistently personalized engagement typically experienced with Qatar Airways, this absence was noticeable—though understandably a potential limitation of codeshare alignment rather than a direct service shortfall. In summary, while the flight itself fulfilled its operational intent, the exceptional professionalism and commitment demonstrated at the Miami check-in counter was the defining highlight of this journey. Greater consistency in elite recognition across partner airlines would further enhance the overall experience.

AA was a very good experience. The employees are wonderful

I almost missed my flight and they helped me out enormously

Flight was fine, but not having WiFi was a major negative

Everything was excellent and I enjoyed myself. Thank for everything

THe flight was an hour late. You got us on the plan and we sat on the ground for 45 minutes with no information from the pilot whatsoever. Worst flight this year.

A chaotic and uncomfortable experience from start to finish. The boarding process was a disaster; despite group numbers, it was a free-for-all that the staff failed to manage (especially after group 5). Once on board, the "entertainment" was non-existent. There are no seatback screens, and the mobile app selection is incredibly thin. The hardware is severely dated. My seat had zero cushioning left—it felt like sitting on a hard board for the entire flight—and the legroom was cramped. To make matters worse, the bathroom was repulsive, with toilet paper, soiled paper towels and liquid/pee all over the floor. When I did interact with the crew, they provided the absolute bare minimum and made me feel like an inconvenience for asking for anything. Avoid this flight if you can.

We left at 1030 am pacific from LA and supposed to land at 7 pm Eastern in NY. They made a detour, stopped in Philadelphia and didn’t land till 1130 PM Eastern!!! Worst flight experience with no pilot communication with no explanation as to what was going on. Everyone was very frustrated to say the least.

Easy experience even with the outbound flight being delayed. The seating and space was comfortable and the crew seemed very nice and helpful.

I have always loved JetBlue and had no complaints on my last trip… I will always recommend then. Thank you JetBlue

The comfortability was very good. Except, when entering the craft the the first steward never greeted us upon entering the airplane. He spoke too fast where his words were all jumbled and difficult to understand.

Jet blue was great But the Jayak system Wasa pure nightmare and wasted so much of my time and energy by not giving me a way to access jet blue to check in the flight back I didn’t even get the number confirmation code 24 hours before. Because I didn’t receive the email with the confirmation code I could NoT CHECk IN. I spoke to a kayak third party and they informed me I could not carry a carry on, on the flight which caused me so much extra stress it was just too much. You can be sure I will not be using it recommending your site. Again.

My experience with JetBlue was fine BUT I am very upset with Kayak! JetBlue had delayed our scheduled departure by an hour and you NEVER notified me of the change. I did not hear directly from JetBlue because the trip was booked through Kayak, a mistake I will not repeat. Your reminder of the our trip last week still had the WRONG departure time. Our return trip has also changed, and again no notice from you.

Right now I’m still in Jamaica waiting on a flight to New York which I should be in New York from the 30th and I’m here in Jamaica

Flight was as expected. But it was delayed an hour. Also, my luggage got damaged. So that sucked especially since the damage made navigating the airport difficult. Walking to get ground transportation is sooo far away now and my checked bag was difficult to carry.

Flight was smooth, amenities (entertainment options and power outlets) were good, sears decent)

Flight team was very courteous only complaint wS the boarding process and mandatory bag check

It was a great flight got here on time wish they would give headphones out for free

Frontier scheduled a 40 minute connection in DEN. What they failed to mention was that they “close the doors” 20 mins prior to departure, which means you only have 20 mins. Not enough time. Possibly against DOT regulations. Filing complaint.

Flight was scheduled at 9:40pm. Got delayed to 10 am, the next day. crazy

The bag check, flight check-in, and onboard experience convinced my wife and me that we will actively go out of our way to avoid flying Frontier Airlines in the future. At bag check, we were informed that check-in could only be completed via the Frontier mobile app. Unfortunately, the app was extremely frustrating—sending us through repetitive, confusing loops that repeatedly forced us to decline add-on services with nearly every click. While most airline apps upsell, this one felt intentionally exhausting. As the process dragged on, we became genuinely concerned that my phone battery would die before check-in could be completed. We approached the bag check staff—who were standing together talking—and explained both our frustration and our predicament. They laughed. Later, my wife described the interaction as “gaslighting,” which felt accurate. We were then informed it would cost $25 per person simply to have our boarding passes printed. From that point forward, the tone of the experience was consistently hostile. The bag check employees were condescending and combative, behaving more like bullies than customer service staff. Unfortunately, that same attitude continued onboard. One flight attendant argued with me when I attempted to stow my backpack in the overhead bin. I explained that we had each paid $75 to check our bags specifically so we would not need to use carry-on space and could have adequate legroom. She demanded to see my ticket, pointed out that it said “no carry-on”—which I acknowledged—and I reiterated that this was precisely why we paid to check our bags. Her response was, “I don’t make the rules.” She then walked away, but not before asking if I “truly wanted to fly back to Chicago today?”—an unnecessary and unmistakable threat. It is also worth noting that despite booking our tickets together in the same transaction, we were not seated together. Upon our return to Chicago—where we could once again sit together—we compared onboard experiences. We both remarked on how unhappy the flight attendants appeared and how each of us was separately asked whether we would like to purchase a beverage. We declined. At no point was water mentioned as an option, leaving us with the clear impression that even water came at a cost—or that complimentary water, if available at all, was deliberately left unmentioned. Overall, the experience was shocking and deeply disappointing, but it was also a profound learning experience—one we will not forget and will not repeat. -Steve

Plane was hot and miserable and the crew was rude!

12 hour delay required getting on and off plane 3 times - would have at least liked to have been offered a snack or drink

They didn’t offer a water, even after I asked

Zero issues with this flight. Crew was outstanding and flight was super. Plane was clean and fine. The seats need more padding and water should be provided without cost. I recognize it's Frontier but there are some things that should still be part of the flight. But still very satisfied with the experience and quality.

They switched our terminal 3 times and we were delayed for four plus hours!!!

It was an early flight and most people napped/slept and the crew let us which was nice.

The crew acted like they had never done this and kept barking passive aggressive orders at people. + the security line + the delay + sitting on the tarmac for 2 hours + none of the apps or signage updating with correct times

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

Information on your arrival and departure airports