BUF - SJU

C$ 153 Find Cheap Flights from Buffalo to San Juan – Compare and Save

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 22/8. 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

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Everything you should know

Cheapest round-trip
C$ 432
Typical prices: C$ 420-C$ 615
United Airlines
Wed 21/10Mon 26/10
BUF - SJU • 2 stops
Cheapest direct flights
C$ 458
Typical prices: C$ 450-C$ 542
JetBlue
Fri 21/8Wed 26/8
BUF - SJU • Direct
Direct flights
Mon, Wed, Fri, Sat
You can fly direct with JetBlue. Average duration is 4h 34m
Direct flights
Direct flights
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Direct flights
Direct flights
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Top airlines
Cheapest • from C$ 432 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Top layover airports
Cheapest • Avg C$ 419 (round-trip)
Shortest trip • 7h 23m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 3 weeks in advance save around 19% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 11% price drop
Most popular
Good to know
Good to know
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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

Wed, 21 Oct - Mon, 26 Oct
United Airlines Logo
7:00 a.m. - 8:38 p.m.
BUF
-
SJU
13h 38m
2 stops
United Airlines Logo
1:35 p.m. - 11:29 p.m.
SJU
-
BUF
9h 54m
2 stops
C$ 432United Airlines
Wed, 9 Sep - Sat, 12 Sep
United Airlines Logo
6:00 a.m. - 1:53 p.m.
BUF
-
SJU
7h 53m
1 stop
United Airlines Logo
1:00 a.m. - 9:48 a.m.
SJU
-
BUF
8h 48m
2 stops
C$ 434United Airlines
Tue, 15 Sep - Mon, 21 Sep
United Airlines Logo
10:30 a.m. - 11:50 p.m.
BUF
-
SJU
13h 20m
2 stops
United Airlines Logo
4:55 p.m. - 11:44 p.m.
SJU
-
BUF
6h 49m
1 stop
C$ 435United Airlines
Mon, 17 Aug - Wed, 2 Sep
Southwest Logo
11:25 a.m. - 10:50 p.m.
BUF
-
SJU
11h 25m
1 stop
Southwest Logo
5:15 a.m. - 3:15 p.m.
SJU
-
BUF
10h 00m
2 stops
C$ 436Southwest
Fri, 14 Aug - Wed, 19 Aug
Southwest Logo
3:55 p.m. - 10:50 p.m.
BUF
-
SJU
6h 55m
1 stop
Southwest Logo
5:15 a.m. - 11:40 a.m.
SJU
-
BUF
6h 25m
1 stop
C$ 453Southwest
Thu, 13 Aug - Wed, 2 Sep
Southwest Logo
1:40 p.m. - 11:05 p.m.
BUF
-
SJU
9h 25m
1 stop
Southwest Logo
2:25 p.m. - 9:05 p.m.
SJU
-
BUF
6h 40m
1 stop
C$ 455Southwest
Fri, 21 Aug - Wed, 26 Aug
JetBlue Logo
7:00 a.m. - 11:38 a.m.
BUF
-
SJU
4h 38mdirect
JetBlue Logo
6:29 p.m. - 11:07 p.m.
SJU
-
BUF
4h 38mdirect
C$ 458JetBlue
Sat, 26 Sep - Sat, 3 Oct
JetBlue Logo
11:05 a.m. - 3:46 p.m.
BUF
-
SJU
4h 41mdirect
JetBlue Logo
1:15 p.m. - 5:49 p.m.
SJU
-
BUF
4h 34mdirect
C$ 459JetBlue
Sat, 5 Sep - Sat, 12 Sep
Delta Logo
7:00 a.m. - 4:33 p.m.
BUF
-
SJU
9h 33m
1 stop
Delta Logo
2:30 p.m. - 10:35 p.m.
SJU
-
BUF
8h 05m
1 stop
C$ 470Delta
Thu, 22 Oct - Mon, 26 Oct
Southwest Logo
5:45 p.m. - 12:05 a.m.
BUF
-
SJU
6h 20m
1 stop
Southwest Logo
5:00 a.m. - 2:10 p.m.
SJU
-
BUF
9h 10m
2 stops
C$ 477Southwest
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 October.

Flight prices are below average for this route right now.

Flights to San Juan Luis Munoz Marin Intl Airport from Buffalo usually cost between C$ 471 and C$ 645 in October.
The lowest price found in the past 5 days was C$ 432 on United Airlines (21 Oct–26 Oct).

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 March, where tickets cost C$ 479 (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$ 798 and C$ 586 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 C$ 465 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 19% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Good to know

Low season

October

Cheapest flight

C$ 153
Best time to beat the crowds (8% less expensive on average)
Most popular time to fly and prices are also 11% lower on average.
Flight from Buffalo to San Juan

When to book flights from Buffalo to 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 4h 34m. The most common departure time is 6:00 a.m. and most flights take off in the morning. Each week, there are 4 flights.

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

    In the last 5 days, the lowest price for a flight from Buffalo to San Juan Luis Munoz Marin Intl Airport was C$ 153 for a one-way ticket and C$ 432 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?

    oneworld is the only airline alliance operating flights between Buffalo and San Juan.

  • 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 JetBlue?

    The two airlines most popular with KAYAK users for flights from Buffalo to San Juan are Southwest and JetBlue. With an average price for the route of C$ 623 and an overall rating of 8.0, Southwest is the most popular choice. JetBlue is also a great choice for the route, with an average price of C$ 508 and an overall rating of 7.1.

  • 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$ 429 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 4 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 4236 reviews
8.0Comfort
7.0Food
8.1Boarding
7.5Entertainment
8.6Crew
Airline reviews

Flight coming out of Buffalo was delayed, so we had to be rescheduled on another flight from Baltimore to Phoenix which means we had a long layover and got home 3.5 hours late. Shuttle to parking stopped at 10pm, so we had to pay for an Uber to the parking lot and got charged an extra day of parking since it was after midnight. Not the best experience. Long day!

2.0 MediocreDawn, Jun 2026
BUF - BWI
Read more Southwest reviews

Flight coming out of Buffalo was delayed, so we had to be rescheduled on another flight from Baltimore to Phoenix which means we had a long layover and got home 3.5 hours late. Shuttle to parking stopped at 10pm, so we had to pay for an Uber to the parking lot and got charged an extra day of parking since it was after midnight. Not the best experience. Long day!

We had a 5 hour delay on the tarmac in Baltimore

Airline travel is always too cramped to really be pleasant, but the cabin crew on this flight did a pretty good job of making up for it by putting on some music during boarding and sprinkling a few funny remarks into the safety briefing and announcements, and just generally being friendly and helpful. It definitely reminded me of why I prefer the in-flight experience on Southwest!

Flight was delayed due to plane not passing inspection And one of the crew had to time out and we had to wait for another one A 3 hour delay

It was one and half hour late... Not sure if any other experience matters.

It went well. Plane wasn't full. Will be great when assigned seating is in place

it was great. the crew is exceptional. the flight was on time.

As always it was a pleasure to fly on southwest.

Excellent! There was a delay due to the weather and they did all they could do to keep us comfortable & updated. Thank you!

Couldn't connect to the internet and movies. Needed help.

The boarding crew was very helpful with a little special problem I had. The inflight crew - so-so.

They kept us on the tarmac for 6 hours after already delaying our flight by 2 hours. No one had any answers. They sent our gate checked stroller to baggage claim instead of giving it back at the gate.

There was a big delay and I missed my connection flight

Crew and agents misguiding on tight connections, and lack of connecting crew looking for inbound planes. A very avoidable missed connection as a result.

Delayed delayed. Poor professionalism. Our seats changed and we pay for them

The plane was broken so we had to change planes.

Uncomfortable seats and flight attendant was rude as she insisted on waking up my husband to ask him if he wanted a drink. When he said that he was sleeping, she replied “without an attitude “. He was seated at 8c

Airlines must do something with overweight people... Maybe reserve a business class seat for them, or you could pay the consequences if someone overweight seat side by side to you in economy.

The flight from Buffalo to Chicago was on an older and smaller plane. Seating was tight. Looking closely at the interior of the aircraft there were definitely signs of aging and wear.

Iberia didn’t let me check in online or select my seats, the experience overall was not very pleasant

The crew and the pilots. The pilots were amazing. The landing in Cancun was excellent.

Flight was delayed many times. The crew was friendly but you eleven had to buy headphones to access the movies in the plane. $8 is not a lot for one person but it is when you travel with all your family.

Excellent price. Everything on time. two bad parts. Kayak said I couldn't sign in for the flight online, but I got an email at the same time from Jet Blue and they let me sign in online. Second bad part was that, although I had provided my known traveler number, neither of my boarding passes, for this flight and the previous one, had TSA pre-check showing.

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.

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.

at the time for boarding the lady just call Group A and no other goups and everybody from A to F go inside without the right turn,and when we get in theres no more spsce for carry on , the ones that get in at not correct group from the back occupy our space !!!!! a mess !!!!

The boarding and flight were ok, but there were several painful issues. The flight was 3:20 in the air and almost four hours door to door, but they only had snack packs on the plane. They really need to have food on longer flights or make it clear to everyone that they won’t have food. They also advertise free WiFi, but it did not work for 90% of this flight. Again, almost four hours door to door. If I had known I was flying spirit for JetBlue prices then I would have planned differently.

I think the food / snack service was very poor. tehy could have done better. Evrything else was great

No wifi, not even while close to the continental US or Puerto Rico, no entertainment whatsoever (TVs not working). Totally disappointing.

Wifi screens were great. Both flights were delayed, spending all day flying home and then getting home at 3am ruins the next day also.

During the flight I suddenly felt very sick, and no one from the crew even tried to help me or check on my condition. They seemed completely indifferent and showed no concern for my well-being. I was very disappointed by the lack of care and compassion. I hope the airline improves its customer service and trains its crew to respond better when passengers need assistance.

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.

The worst. They don’t follow procedure for boarding per group. Flight got delayed for no understandably reasons, they changed our destination from PR to Miami, left us inside a plane for more than 8 hours, then cancelled flight in Miami leaving us stranded. Poorly managed re-accommodation for a new flight and overnight stay so I have to spend in a new ticket and my own hotel room to been able to get to my office next day. Lost 2 days of work and as a doctor, patients loosing their appointments. to other flights and besides

I liked the price of the flight and the chance to buy a seat with no person seated in the middle seat.. Also the flight was right on time.

The flight left over two hours late. They charged me $180 to bring a carry on. There was an error with the spelling of my name and Frontair agent lied that I would need to pay $200 for her to fix the spelling, and pressured me that if I don't do it quick I would lose the flight. I called back and another agent said it costs $75 to fix. All in all, this company is a complete scam.

I took my first and last flight with FRONTIER. The seats are not able to be reclined so it’s not a very comfortable experience when you take a flight of 3 hours or longer. You must pay for your luggage either carry on or check in, so taking all this in consideration at the end what you think you’re saving your paying in services that should be included. Not a beverage in sight. . You’re seriously better off getting on a proper airline such as Delta, AA, United, etc.

Horrible and worse flight ever. Was left at the airport in SJU by my flight to JFK after several delay at Santa Domingo. Will never recommend Frontier to any one. After leaving, frontier customer service ask me to rebook and pay for another flight to from SJU to JFK. Worse airline ever. You pay for everything with frontier airline.

Frontier notifying me earlier of flight delay of over 2 hours.

Excellent crew. WE all know Frontier its a low cost airline but the travel time was about 30 minutes and the crew was phenomenal. I was with a group of 10 more and we are enjoy our flight. The only issue was in SJU waiting for the luggage.

Be prepared for crowds and chaos upon arrival at the Orlando airport

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

Information on your arrival and departure airports