BUF - SJU

C$ 131 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 Luis Munoz Marin Intl departing on 25/4. 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, 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 Buffalo to San Juan, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
C$ 302
Typical prices: C$ 384-C$ 773
Delta
Tue 14/4Fri 17/4
BUF - SJU • 1 stop
Cheapest direct flights
C$ 369
JetBlue
Sat 25/4Fri 1/5
BUF - SJU • Direct
Direct flights
4 days a week
Mon, Wed, Fri, Sat
You can fly direct with JetBlue. Average duration is 3h 49m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top airlines
Delta
Cheapest • from C$ 302 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top layover airports
Philadelphia (PHL)
Cheapest • Avg C$ 434 (round-trip)
Philadelphia (PHL)
Shortest trip • 5h 57m (one-way)
Insights
Insights
Insights
Insights
When to book
3 weeks
in advance
Our data shows that travellers who book at least 3 weeks in advance save around 10% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 24% price drop
March
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Luis Munoz Marin Intl!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Buffalo to Luis Munoz Marin Intl (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 Luis Munoz Marin Intl 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 Luis Munoz Marin Intl

Tue, 14 Apr - Fri, 17 Apr
Delta Logo
12:09 p.m. - 11:12 p.m.
BUF
-
SJU
11h 03m
1 stop
Delta Logo
7:30 a.m. - 3:39 p.m.
SJU
-
BUF
8h 09m
1 stop
C$ 302Delta
Mon, 9 Mar - Thu, 12 Mar
Delta Logo
4:47 p.m. - 11:15 p.m.
BUF
-
SJU
6h 28m
1 stop
Delta Logo
7:30 a.m. - 6:43 p.m.
SJU
-
BUF
11h 13m
1 stop
C$ 304Delta
Wed, 6 May - Thu, 14 May
Delta Logo
12:09 p.m. - 8:24 p.m.
BUF
-
SJU
8h 15m
1 stop
Delta Logo
2:25 p.m. - 11:59 p.m.
SJU
-
BUF
9h 34m
1 stop
C$ 331Delta
Fri, 10 Apr - Fri, 24 Apr
Southwest Logo
10:55 a.m. - 11:55 p.m.
BUF
-
SJU
13h 00m
1 stop
Southwest Logo
5:35 a.m. - 12:00 p.m.
SJU
-
BUF
6h 25m
1 stop
C$ 339Southwest
Wed, 29 Apr - Wed, 6 May
Delta Logo
12:09 p.m. - 11:13 p.m.
BUF
-
SJU
11h 04m
1 stop
Delta Logo
5:42 p.m. - 12:50 a.m.
SJU
-
BUF
7h 08m
1 stop
C$ 341Delta
Sat, 2 May - Mon, 11 May
Delta Logo
12:09 p.m. - 11:13 p.m.
BUF
-
SJU
11h 04m
1 stop
Delta Logo
2:25 p.m. - 11:59 p.m.
SJU
-
BUF
9h 34m
1 stop
C$ 342Delta
Sat, 9 May - Wed, 13 May
United Airlines Logo
6:10 a.m. - 8:34 p.m.
BUF
-
SJU
14h 24m
2 stops
United Airlines Logo
4:55 p.m. - 11:55 p.m.
SJU
-
BUF
7h 00m
1 stop
C$ 345United Airlines
Fri, 10 Apr - Fri, 17 Apr
Frontier Logo
4:45 p.m. - 2:01 a.m.
BUF
-
SJU
9h 16m
1 stop
Frontier Logo
3:08 a.m. - 10:49 a.m.
SJU
-
BUF
7h 41m
1 stop
C$ 349Frontier
Sun, 12 Apr - Tue, 14 Apr
United Airlines Logo
6:00 a.m. - 1:45 p.m.
BUF
-
SJU
7h 45m
1 stop
United Airlines Logo
1:00 a.m. - 1:13 p.m.
SJU
-
BUF
12h 13m
2 stops
C$ 352United Airlines
Sat, 25 Apr - Fri, 1 May
Multiple Airlines Logo
5:42 p.m. - 12:29 p.m.
BUF
-
SJU
18h 47m
2 stops
Multiple Airlines Logo
4:30 p.m. - 11:14 a.m.
SJU
-
BUF
18h 44m
2 stops
C$ 354Multiple Airlines
Booking Insights

KAYAK's insights & trends for Buffalo to Luis Munoz Marin Intl flights

Get data-powered insights and trends into flights from Buffalo to Luis Munoz Marin Intl 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 April.

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 C$ 391 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is C$ 726 and C$ 581 respectively.

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 10% 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 flightC$ 131
Best time to beat the crowds (5% less expensive on average)
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 Luis Munoz Marin Intl

Are your dates flexible? Find out the best times to travel from Buffalo to Luis Munoz Marin Intl 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

  • How many flights are there between Buffalo and San Juan Luis Munoz Marin Intl Airport per day?

    There is a maximum of 1 nonstop flight a day that takes off from Buffalo and lands in San Juan Luis Munoz Marin Intl Airport, with an average flight time of 3h 49m. The most common departure time is 7:00 a.m. and most flights take off in the morning. Each week, there are 3 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 C$ 131 for a one-way ticket and C$ 302 for a round-trip.

  • 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?

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

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

    You can catch a direct 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 C$ 658 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 C$ 440 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 travellers 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.

  • 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 C$ 474 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 nonstop 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 nonstop flights

Reviews of the top 5 airlines flying from Buffalo to Luis Munoz Marin Intl

 
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 Luis Munoz Marin Intl? 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 4301 reviews
7.0Food
8.0Comfort
8.6Crew
8.1Boarding
7.5Entertainment
Airline reviews

It was canceled. Supposedly weather. But there was no snow in Baltimore. At least we found out before driving to airport

2.0 MediocreAnonymous, Feb 2026
BWI - PBI
Read more Southwest reviews

It was canceled. Supposedly weather. But there was no snow in Baltimore. At least we found out before driving to airport

I have not flown Southwest in awhile and had a very pleasant experience. From ticketing to boarding to the flight. The flight left on time and landed ahead of schedule. It won't be so long next time!!

The Southwest experience has definitely taken a dive from its early days. You can no longer deferentiate from other airlines. Air travel is too expensive. Southwest is no longer budget friendly. They have lost me as a loyal customer.

Flight was hours late, unable to sit next to spouse, I have had so much better experiences. Substantially better, only saving grace was that it was a short flight.

An entire day of delays. Cost lots of money. Meals and a hotel.

The WiFi and crew on the plane were good, however, the boarding experience was awful. I paid for the Choice Preferred and was boarded in group 5 so all overhead storage was full. They found room for our luggage, but further back making getting off the plane a nightmare. Also, we were in row 6 and the seats were extremely uncomfortable. Both my daughter and I had no leg room and couldn’t wait to get off the plane.

The charges were ridiculous for an hour flight and the turbulence was very scary.

Still need to work out the kinks on the new assigned seating boarding process. Otherwise, a very good flight.

WiFi did not work. Boarding with the new seating assignments took too long. The temperature in the terminal was obnoxious. +/- 80°

The seats are now more narrow. I paid for front row the seats in the front are even more narrow than before.

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!

boarded at 5:30 pm, pushed away from gate at 6pm ... takeoff was not until ~6:45pm; disappointing

Smooth boarding, pleasant and professional lady checking us in. Crew service was excellent, again pleasant, but professional. Nice touch-down on landing! Thank you Delta. 💗

Paid for wifi that didn't work. No plug in seat to work. No entertainment.

We departed early and made up time in the air allowing us to arrive 30 minutes early. Capt was incredibly genuine and thanked every passenger for flying with Delta. Completely humble and professional!

They double booked seats, the gate staff changed my ticket as I was boarding she went over to the computer and changed it without telling me. She messed up an entire three row section for me and others. Other travelers were outraged but the gate staff were so rude, so condescending saying it wasn't their problem to solve. I would rate this a zero if I could. Will not fly Delta again I'll stick with United and American.

It was last minute due to weather - considering - it was amazing! Good smiles, friendly staff and they were making sure we knew what was going on when and where.

The flight was comfortable and uneventful, which is what I desire

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.

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.

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.

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.

First of all we hade waited 3 hours in the airplane waiting to leave. Second the return schedule was changed and it messed up my entire vaction. I won't buy never again another flight and recommend to nobody traveling with them.

There was no food and no entertainment, so I'm not sure why these are even in the survey, as my understanding is frontier does not ever offer food without a few, not even a snack, and there are no screens so unless the flight safety talk is our entertainment why ask how we liked it?. One of the flight attendants say in the back of the plane as people filed in to their seats, yelling orders about where to put baggage and telling people to hurry up. It was the least professional experience I've ever had on a flight.

Very well recently! Frontier is improving and less harrassing customer on luggages! Positive!

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.

Everything you need to know for your flight from Buffalo to Luis Munoz Marin Intl

Information on your arrival and departure airports