SJU - BUF

$96 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 2/16. 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
$182
Overall average: $347
Frontier
Fri 5/8Sat 5/16
SJU - BUF • 1 stop
Cheapest non-stop
$290
JetBlue
Sat 5/9Sat 5/16
SJU - BUF • Non-stop
Top airlines
Frontier
Cheapest • from $192 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 34% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 38% price drop
June
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 San Juan to Buffalo 3 days a week: Mon, Fri, Sat.
Direct flights
Direct flights
Direct flights
Direct flights
Start a new search
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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 8 - Sat, May 16
Frontier Logo
3:08 am - 10:49 am
SJU
-
BUF
7h 41m
1 stop
Frontier Logo
11:44 am - 10:48 pm
BUF
-
SJU
11h 04m
1 stop
$182Frontier
Wed, Mar 4 - Mon, Mar 9
Frontier Logo
11:07 am - 11:39 am
SJU
-
BUF
25h 32m
1 stop
Frontier Logo
9:25 pm - 10:12 am
BUF
-
SJU
12h 47m
1 stop
$207Frontier
Wed, Mar 4 - Mon, Mar 9
JetBlue Logo
6:10 am - 12:44 pm
SJU
-
BUF
7h 34m
1 stop
JetBlue Logo
7:30 pm - 2:54 am
BUF
-
SJU
7h 24m
1 stop
$211JetBlue
Thu, Mar 5 - Tue, Mar 10
Delta Logo
7:00 am - 2:56 pm
SJU
-
BUF
8h 56m
1 stop
Delta Logo
12:07 pm - 11:15 pm
BUF
-
SJU
11h 08m
1 stop
$212Delta
Wed, Feb 25 - Mon, Mar 2
Frontier Logo
3:53 am - 11:34 am
SJU
-
BUF
8h 41m
1 stop
Frontier Logo
4:45 pm - 2:25 am
BUF
-
SJU
8h 40m
1 stop
$224Frontier
Wed, May 6 - Wed, May 13
American Airlines Logo
6:00 am - 4:42 pm
SJU
-
BUF
10h 42m
2 stops
American Airlines Logo
5:30 am - 10:05 pm
BUF
-
SJU
16h 35m
1 stop
$232American Airlines
Fri, May 8 - Sat, May 16
Frontier Logo
3:08 am - 10:49 am
SJU
-
BUF
7h 41m
1 stop
Frontier Logo
11:44 am - 10:48 pm
BUF
-
SJU
11h 04m
1 stop
$233Frontier
Sat, Feb 14 - Wed, Feb 18
JetBlue Logo
5:01 am - 2:02 pm
SJU
-
BUF
10h 01m
1 stop
JetBlue Logo
3:00 pm - 11:59 pm
BUF
-
SJU
7h 59m
1 stop
$236JetBlue
Wed, Feb 25 - Sun, Mar 1
American Airlines Logo
7:00 am - 4:52 pm
SJU
-
BUF
10h 52m
2 stops
American Airlines Logo
6:00 am - 11:40 pm
BUF
-
SJU
16h 40m
1 stop
$238American Airlines
Wed, Feb 25 - Wed, Mar 4
Multiple Airlines Logo
5:25 pm - 11:34 am
SJU
-
BUF
19h 09m
1 stop
Multiple Airlines Logo
7:41 pm - 3:51 am
BUF
-
SJU
7h 10m
1 stop
$239Multiple 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.

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 $411 and $409 respectively.

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 34% 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$96
Best time to beat the crowds with an average 39% drop in price.
Most popular time to fly with an average 7% 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 $96 for a one-way ticket and $192 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.

  • 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 $400 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 $306 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.

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

Friday

JetBlue

JetBlue

Saturday

JetBlue

JetBlue

See more direct flights

Direct returns

Buffalo to San Juan Luis Munoz Marin Intl

Monday

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.
8.0
SouthwestOverall score based on 4267 reviews
8.1Boarding
8.6Crew
7.5Entertainment
7.0Food
8.0Comfort
Airline reviews

All good except once again bags took an hour at Midway Airport Happens all the time. Ridiculous

10.0 ExcellentAnonymous, Jan 2026
PHX - MDW
Read more Southwest reviews

All good except once again bags took an hour at Midway Airport Happens all the time. Ridiculous

Everything went smoothly and we even arrived a little bit early.

Great vacation. Can't wait till next year for another one.

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.

Delta One is extraordinary. I fly business when somebody hires me. I just wonder why there is such a chasm between business class and the insanely inhumane and nonsensical coach. The seats are not large enough to fit even my tiny wife. We fly 10% of what we did because we don’t want to pay 5-10 k but for $400 it’s unbearable. It seems like the accountants took over and made stupid decisions. Screw in 20 extra seats and make it so unbearable that people fly 90% less. Just put the damn price up and put some proper chairs in. But business, yay.

Air travel sucks. It continues to be awful for all airlines. No shame on delta alone.

Delta canceled our flight and we had to scramble to find another airline to get home. Phoenix is not a delta hub so they didn’t have another plane. It would have been a red eye though Salt Lake City. Getting in at 5am. No bueno.

I went to washroom twice and once there was no toilet seat cover and the other no toilet paper at all. I don't think it was ever replenished or checked before we boarded as it was very early on in the flight.

Premium economy is like the forgotten class. Aside from meal service never saw a flight attendant. Any additional beverages required going to the very back of the plane to request and there was rarely an attendant there. Seat leg / foot rest hardly elevates and not well suite for someone under 5’6. Bulky armrests

Flight delays both to Detroits and return flight . The flight to Detroit was associated with mechanical difficulty

I paid for a business class ticket on Delta. It was sourced to Virgin Atlantic. They changed out the aircraft which had fewer upper class tickets. Even though I'd checked into the lounge, was receiving alerts via kayak about the delay and changes; no one informed me that the seat would be changed - until I attempted to board and was told that I would have an economy seat or they could search to put me on another airline. Even the flight crew were informed of this change (10 passengers were bumped out of Upper Class) around 2 pm (1400) time. Hours would have helped to consider alternatives instead of making a last minute change. There needs to be compensation from both Delta and Virgin given this change in service/experience.

The food is terrible. The staff is wonderful. Comfort is good.

For some reason, I couldn't choose my seat. The airline gave me a seat when I got there. Not happy about that. Otherwise, everything else was great!

I fly Delta all the time, have Platinum Medallion status. But this route seems to have major problems with delays and seems to never leave on time! Have only taken it twice in the last two weeks, and each time it had delays of more than 1 hour... very disappointed!!!!

Long delays, lack of information about the status of the flight. The flight was delayed 4 times.

It was good. But the gate team made me check my carry on when there was plenty of space for my luggage on the plane. Otherwise our trip was fine.

Bags took over and hour to come out. Delays due to wind caused rebooking.

Gate was overcrowded. Gate agents performed very well. Flight crew was top notch! Efficient & professional & courteous. Both meals not thermalized well. Dinner main dish was actually cold in the center. Almost inedible. Breakfast sandwich was lukewarm.

RIC Staff was not enough. Elderly passengers had to wait 30 minutes to deplane, so we could board and still had to walk as no chairs were provided. And, passenger in front of my seat assignment rammed seat against my legs entire flight time. Was mildly bruised and left thigh still sore.

Overall, an average flight; food options were not the best, and there were bugs on the plane.

There was no TV's on the plane? I tried to activated the WiFi multiple times before the plane took off but it wasn't work well.

Air Marco’s fleet of airplanes are old and pathetic. The seats are torn and stained. The monitors don’t work properly. If this wasn’t a business trip and I had control of booking the flight, I would not travel on this carrier.

Good service, friendly staff. Food was average for airlines and the seats were small.

Pathetic check in experience once again. Not enough staff scheduled at bag drop or for special assistance at LHR. Really need to rethink the whole self check in procedure. The crew was good. A very decent selection of special meals in this leg as compared to the JFK-LHR leg.

Horribly rude check in at airport, worst in 25 years of flying. All over a simple issue they could have googled to resolve.

1) No pilot available for 1 hour 2) no room for most passengers careyon in overhead—-> stowed below 3) when we landed we had to wait 45 min. Before docking at gate as gate was not ready

we were delayed because of some safety check that wasn't done or available

The ride share experience in JFK is terrible. After traveling on a flight, then you need to take a subway to the last stop to get an uber or lyft. Unacceptable. Bad job JetBlue for permitting JFK and Port Authority to do this to your passengers.

Four plus hour flight delay in New York caused us to take off after 11:30pm. We didn’t arrive at our hotel until five hours after check in. Started the trip off feeling exhausted.

I don’t usually fly budget airlines or airlines in the United States. It was as good as any other airline. The seats are comfortable and the airline attendants are not rude & surly. Very nice flight (s).

They have the most inexperienced / rude flight staff I’ve encountered

I paid extra for a seat closer to the front. The TV didn’t work at all for the entire flight. Would have been nice to know before I purchased an “upgraded “ seat

Too many long delays with JetBlue. Worst major airline that serves JFK but unfortunately I keep going back because of the prices.

flight cancelled after 2 delays. left us sitting in JFK at 1am. no customer service to assist rebooking.

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.

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.

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

Information on your arrival and departure airports