BUF - SJU

C$ 168 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 14/6. 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.
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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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Cheap Flight Deals 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.

Recent round-trip flight deals from Buffalo to Luis Munoz Marin Intl

KAYAK's recommended round-trip deals from the most popular airlines that fly from Buffalo to Luis Munoz Marin Intl.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
Delta Logo
12:09 p.m. - 10:08 p.m.BUF-SJU
9h 59m1 stop
Delta Logo
1:10 p.m. - 11:50 p.m.SJU-BUF
10h 40m1 stop
C$ 334Delta
Find Deal
mié., 1 oct. - mié., 8 oct.
Delta Logo
3:30 p.m. - 10:21 p.m.BUF-SJU
6h 51m1 stop
Delta Logo
2:15 p.m. - 11:03 p.m.SJU-BUF
8h 48m1 stop
C$ 361Delta
Find Deal
lun., 20 oct. - sáb., 25 oct.
United Airlines Logo
6:00 a.m. - 12:34 p.m.BUF-SJU
6h 34m1 stop
United Airlines Logo
1:05 a.m. - 4:52 p.m.SJU-BUF
15h 47m2 stops
C$ 363United Airlines
Find Deal
dom., 21 sep. - vie., 26 sep.
Frontier Logo
7:28 p.m. - 2:51 a.m.BUF-SJU
7h 23m1 stop
Frontier Logo
11:20 a.m. - 7:48 p.m.SJU-BUF
8h 28m1 stop
C$ 413Frontier
Find Deal
dom., 11 may. - vie., 16 may.
JetBlue Logo
10:33 a.m. - 6:58 p.m.BUF-SJU
8h 25m1 stop
JetBlue Logo
3:33 a.m. - 1:53 p.m.SJU-BUF
10h 20m1 stop
C$ 421JetBlue
Find Deal
mar., 20 may. - mar., 27 may.
Frontier Logo
9:51 a.m. - 10:01 p.m.BUF-SJU
12h 10m1 stop
Frontier Logo
9:30 p.m. - 9:01 a.m.SJU-BUF
11h 31m1 stop
C$ 427Frontier
Find Deal
lun., 12 may. - jue., 15 may.
JetBlue Logo
1:00 p.m. - 11:25 p.m.BUF-SJU
10h 25m1 stop
JetBlue Logo
7:01 a.m. - 1:53 p.m.SJU-BUF
6h 52m1 stop
C$ 432JetBlue
Find Deal
mié., 21 may. - mié., 28 may.
United Airlines Logo
10:50 a.m. - 11:57 p.m.BUF-SJU
13h 07m2 stops
United Airlines Logo
1:05 a.m. - 9:46 a.m.SJU-BUF
8h 41m2 stops
C$ 458United Airlines
Find Deal
mié., 1 oct. - mar., 7 oct.
Southwest Logo
12:25 p.m. - 11:30 p.m.BUF-SJU
11h 05m1 stop
Southwest Logo
5:10 a.m. - 4:10 p.m.SJU-BUF
11h 00m2 stops
C$ 607Southwest
Find Deal
lun., 25 ago. - dom., 31 ago.
Southwest Logo
4:15 p.m. - 10:30 p.m.BUF-SJU
6h 15m1 stop
Southwest Logo
7:50 a.m. - 6:15 p.m.SJU-BUF
10h 25m2 stops
C$ 613Southwest
Find Deal
mar., 13 may. - sáb., 17 may.

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.

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$ 407 (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$ 727 and C$ 636 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 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Good to know

Low season

October

High season

December

Cheapest flight

C$ 168
Best time to beat the crowds (8% less expensive on average)
Most popular time to fly (32% more expensive 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

  • 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$ 121 for a one-way ticket and C$ 241 for a round-trip.

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

    We unfortunately don’t have that data for this specific route.

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

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

  • 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$ 735 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$ 623 and an overall rating of 8.0.

  • 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.

See more FAQs

Top 5 airlines serving 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 4287 reviews
8.0Comfort
7.1Food
8.2Boarding
8.6Crew
7.6Entertainment
Airline reviews

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

8.0 ExcellentJonathan, Apr 2025AUS - MSY
Read more Southwest reviews

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

The price of the tickets isn't matching the flight experience. No matter how long the flight is, you're only getting pretzels. The flight attendants looked unkept and over it.

Plz don't take away free bags and free seating

The seats were a bit cramped and worn, but otherwise okay.

I would have liked to arrive on time - not 5 hours late!

After a 3 hour layover in Denver my flight was delayed over 5 hours! No explanation; no assistance; no offer to provide compensation; no one at Southwest was willing to offer any assistance. 8 hours in the Denver airport - ridiculous!

It was a perfect flight in all aspects! Both legs!

Only one drink pass through the cabin for a 4 hour flight. Quite rough and bumpy landing.

Boarding process, crew were good. But the seats were so uncomfortable that was all I could focus on. I literally had to sit forward so that all 3 of us could fit in row. I will try to avoid Southwest in the future for any flights over 60 minutes.

1.5 hour delay, poor service, no compassion from the crew. Terrible experience

After a 5 hour delay waiting at the gate (3 delays adding up) with no clear reason provided, we finally boarded flew 3/4 of the way to Toronto then were turned back to New York. As we neared New York, the pilot declared that it was his fault, something to do with timing and him not being allowed into the country???? How could the airline let his happen? They had hours to prepare and make sure they had a crew available for the flight! We ended up in Toronto a day late with no sleep.

Terrible and im avoiding them in the future. My initial flight was delayed causing me to rebook my flight and when speaking with the representative to rebook I explained this is the second time my flights were delayed and they did nothing to help me. I wasn't booked to comfort plus or given a voucher or anything. I was almost late for my meeting that I needed to attend on Monday because of the games delta played delaying my flights even more and putting me in the very back of the plane next to an extremely intoxicated passenger

Although the flight left late, we arrived early. It was one of the quickest boarding and off boarding experiences I’ve had. It was kind of annoying the only drinks they had were water, coffee, and tea. The flight was very smooth, temperature was just right, and flight attendants were friendly.

Seats were really tight and the seat belts did not give enough slack.

The dear was very limited in space. I could put my water bottle in seat basket. Also, there was no inflight entertainment in the delta app?

We were forced to wait nearly 50 additional minutes before leaving the terminal.

Customer service at the gate in the flight was exceptional. On time. Aircraft and seat was decent. Thanks Delta. 💗

Crew was nice. Flight was timely. Seats could be better as well as the food considering it’s first class.

The WiFi has been awful on my last few Delta Air Lines flights.

Only one side of the heafphone jack work. Crew was friendly and helpful.

Multiple delays and not straight answer from the United team

For economy, it was very good. Staff was great, they even let some of us change seats for more leg room... Put an empty seat between us which was fantastic for a 12hr flight. Onboard entertainment was excellent, I think over 200 choices of movies/tv/etc The bad was the barely/nonfunctional wifi that cost either $16.99 or 1700 miles (full flight). It was atrocious... Definitely the worst of the last 3 long haul major airlines I was on the last few months.

Stewardess spilled orange juice on my clothes/seat no help no apology just threw napkins at me to clean the mess up. Not Happy.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

The plane pushed back from the gate on time. However, it stopped on the ramp, and we waited for over 20 minutes before the aircraft pulled back to the gate. Apparently, something of importance had to be removed from the aircraft by the gate agent. I found this to be odd. The delay was not significant, but I felt that whatever was on the aircraft that had to be taken off, should’ve been done before we pushed back from the gate.

I didn’t get on plane. Passport being processed by consulate with visa application. Tried to cancel through underpricer after purchasing cacelling for any reason. No dice, they are thieves.

Electric plugs didn't work. Entertainment system wasn't working

The design of the light switch on the arm rest is ridiculous.

Smooth boarding process. Early departure, smooth flight, early arrival. The entertainment package has very good recent movie options. The flight crew were friendly and professional.

leg space better than expected. two washrooms for one plane isn't enough.

Excellent. Although they used to greet me as a mosaic member and provide a free drink, early boarding helps me to keep coming back to JetBlue.

No music app working: no economy meal on five hour flight; hour on tarmac at the end waiting for a gate. Flight itself was smooth and easy.

Communication with the customer and stay is important. Staff off with a minor inconvenience but it worked out of course. Also this was a very old Mint Class plane. They snuck this one in on us. The updated aircraft are much better.

The flight itself was fine, but the boarding process was extremely frustrating. There is no one scanning boarding passes - passengers just scan themselves and enter the jetway. By the time my husband and I got on the plane and were halfway to our seats they determined there were too many bags on the plane and everything at that point needed to be checked. This created a lot of unnecessary chaos. They should have alerted people before getting on the plane that they would need to start checking bags instead of waiting until people were already on the plane.

The best flight I’ve had in a while. The plane was like 25% capacity, if that. Smoothest boarding and deplaning process I’ve ever experienced. Wish all flights were this smooth.

In flight on demand didn't work at our seats. Only a single beverage/snack run.

Traveling with JetBlue from NYC was convenient as accessing JFK airport was straightforward via the LIRR to the AirTrain. Maneuvering through the terminal was hassle-free, which was a pleasant start to the journey. However, the flight experience itself left much to be desired. The seating arrangement was notably uncomfortable; despite securing a window seat, space felt cramped. This was exacerbated by the middle seat passenger encroaching on my area, which made the flight less enjoyable. Additionally, while the in-flight entertainment system initially seemed like a reprieve, the sound outlet on my seat was inoperable. This issue turned what could have been a manageable three-hour flight into a rather tedious ordeal, as I was unable to use the entertainment system effectively. While JetBlue provided a smooth process in terms of airport logistics, the on-board experience highlighted areas in need of improvement, particularly in terms of comfort and entertainment system maintenance.

Over 2 hour delay for a 50-minute flight is unacceptable, especially in normal weather. Very poor communication via app

In-flight staff was very helpful and excellent. However, the flight was delayed by 90 minutes. Also the boarding process should be expedited in case of delayed flights. This will help the passengers trying to make international connections.

Kayak sent over to jet blue my account being Mike Callaghan instead of Michael. I have a jet blue account with Michael that was connected

Not very good. Paid in excess of $400 for assigned seating for my family and that was not provided. I want that money back.

The seats were hard molded plastic covered in plastic vinyl. And the scam to charge people extra to sit together. Don’t they know we can just ask someone to trade seats. And watching the staff separate young children from parents… super classy. We had to guilt them into offering up our seats. This companies policies suck. Don’t give them your money.

The seats were awful, hard plastic covered in sheet vinyl. The airline tries to scam you into paying extra to get seat together when the flight wasn’t full. They were going to separate a family with young children but my wife who had a row to herself gave up her seat so the young mom could be with her young boys. I’m never giving this airline my money again.

It was a short flight so no food or entertainment….

Seats are uncomfortable but price is good. Guess I can put up with misery for four hours.

I’ve never traveled on Frontier before. If you want basic, no frills, friendly service at great prices then give them a fly!

Cancelled and declined to find alternatives Earlier flight is 2 days later Sent the cancellation notification very late, wish I knew earlier would have stayed to watch the Miami open final game Very disappointing service

The worst flight of my life. Never will I fly frontier again

Landing in terminal 2, but my luggage is terminal 3. We (and others) were looking for it in terminal 1. We probably missed the crew broadcast, but the communication could have been clearer for non native (or elderly) passengers.

I chose the seats when booked the flight and paid for them. However after checking in I found we were assigned different seats!

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

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