SJU - BOS

$105 Find Cheap Flights from San Juan Airport to Boston

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Luis Munoz Marin Intl to Boston departing on 5/14. 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 Boston

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

Cheapest round-trip
$204
Typical prices: $368-$258
Frontier
Sat 5/16Tue 5/19
SJU - BOS • 1 stop
Cheapest non-stop
$290
Typical prices: $332-$251
JetBlue
Fri 5/22Mon 5/25
SJU - BOS • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
JetBlue's Even More Space seats add 7” extra legroom.
The Silver Line bus is free from BOS to South Station.
Expert advice
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Top airlines
Cheapest • from $204 (round-trip)
Best reviews • 7.9 score
Airline reviews
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Airline reviews
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Nonstop flights
Every day
You can fly direct with Delta and JetBlue. Average duration is 4h 09m
Direct flights
Direct flights
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Direct flights
Direct flights
+1
Avoid delays
Most punctual • 88% on-time
Best time • Fewest delays
Insights
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Top layover airports
Cheapest • Avg $168 (round-trip)
Shortest trip • 6h 30m (one-way)
Insights
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When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 12% compared to booking last minute.
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When to travel
Cheapest • 21% price drop
Most popular
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Flight Deals

Cheap Flights from Luis Munoz Marin Intl to Boston (SJU-BOS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Luis Munoz Marin Intl to Boston 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 Luis Munoz Marin Intl to Boston

Sat, May 16 - Tue, May 19
Frontier Logo
5:15 pm - 1:24 am
SJU
-
BOS
8h 09m
1 stop
Frontier Logo
6:00 am - 2:07 pm
BOS
-
SJU
8h 07m
1 stop
$204Frontier
Sat, May 30 - Mon, Jun 1
Frontier Logo
5:15 pm - 1:24 am
SJU
-
BOS
8h 09m
1 stop
Frontier Logo
6:00 am - 2:07 pm
BOS
-
SJU
8h 07m
1 stop
$210Frontier
Fri, Jun 5 - Sun, Jun 7
Frontier Logo
5:15 pm - 7:49 am
SJU
-
BOS
14h 34m
1 stop
Frontier Logo
6:00 am - 2:07 pm
BOS
-
SJU
8h 07m
1 stop
$212Frontier
Wed, Jul 15 - Wed, Aug 5
Frontier Logo
5:15 pm - 1:23 am
SJU
-
BOS
8h 08m
1 stop
Frontier Logo
6:00 am - 2:16 pm
BOS
-
SJU
8h 16m
1 stop
$233Frontier
Wed, Aug 5 - Wed, Aug 12
Frontier Logo
5:15 pm - 7:46 am
SJU
-
BOS
14h 31m
1 stop
Frontier Logo
11:05 am - 11:29 pm
BOS
-
SJU
12h 24m
1 stop
$236Frontier
Sat, Aug 1 - Wed, Aug 12
Frontier Logo
5:15 pm - 1:23 am
SJU
-
BOS
8h 08m
1 stop
Frontier Logo
6:00 am - 2:16 pm
BOS
-
SJU
8h 16m
1 stop
$238Frontier
Sat, Jun 13 - Tue, Jun 16
Spirit Airlines Logo
2:05 pm - 11:54 pm
SJU
-
BOS
9h 49m
1 stop
Spirit Airlines Logo
9:20 am - 11:59 pm
BOS
-
SJU
14h 39m
1 stop
$245Spirit Airlines
Mon, May 18 - Fri, May 29
Multiple Airlines Logo
6:25 pm - 9:12 am
SJU
-
BOS
14h 47m
1 stop
Multiple Airlines Logo
5:45 am - 6:59 pm
BOS
-
SJU
13h 14m
1 stop
$246Multiple Airlines
Wed, Jun 3 - Sun, Jun 7
Multiple Airlines Logo
5:15 pm - 1:24 am
SJU
-
BOS
8h 09m
1 stop
Multiple Airlines Logo
5:45 am - 1:00 pm
BOS
-
SJU
7h 15m
1 stop
$247Multiple Airlines
Sat, May 30 - Sat, Jun 6
Multiple Airlines Logo
5:15 pm - 1:24 am
SJU
-
BOS
8h 09m
1 stop
Multiple Airlines Logo
7:00 am - 11:59 pm
BOS
-
SJU
16h 59m
1 stop
$249Multiple Airlines
Booking Insights

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

Get data-powered insights and trends into flights from Luis Munoz Marin Intl to Boston 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 Boston?

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 Boston departing in May.

What’s the cheapest day of the week to fly from San Juan Airport to Boston?

The average price of all round-trip flights from San Juan Luis Munoz Marin Intl Airport to Boston clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from San Juan Airport to Boston, look for departures on Fridays and avoid leaving on a Monday, as it's usually the priciest day. When flying back from Boston, Wednesday is the cheapest day to fly and Thursday is the most expensive.

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

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 Boston, 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 Boston is February, where tickets cost $220 (return) on average. On the other hand, the most expensive months are July and May, where the average cost of round-trip tickets is $319 and $314 respectively.

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

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 $298, 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 Boston?

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 Boston, 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 Boston, you should book around 2 weeks before departure, which saves you about 12% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Expert advice

Expert advice for your flight from Luis Munoz Marin Intl to Boston

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on JetBlue

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Stefanie Waldek

Stefanie Waldek

Expert on Delta and Frontier

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Blane Bachelor

Blane Bachelor

Expert on BOS

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Gabriel Leigh

Gabriel Leigh

Expert on SJU

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Good to know

Low seasonMarch
Cheapest flight$105
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly and prices are also 8% lower on average.
Flight from San Juan Airport to Boston

When to book flights from Luis Munoz Marin Intl to Boston

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

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

    In the last 3 days, the lowest price for a flight from San Juan Luis Munoz Marin Intl Airport to Boston was $105 for a one-way ticket and $204 for a round-trip.

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

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

  • Which airlines offer Wi-Fi service onboard planes from San Juan Airport to Boston?

    All the following airlines offer inflight Wi-Fi service on the San Juan Airport to Boston flight route: JetBlue, Delta, Iberia, British Airways, Aer Lingus, Finnair, and American Airlines.

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

    The Airbus A321neo is the aircraft model that flies most regularly on the San Juan Airport to Boston flight route.

  • Which airline alliances offer flights from San Juan Airport to Boston?

    SkyTeam is the only airline alliance operating flights between San Juan Airport and Boston.

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

    There are nonstop flights from San Juan Airport to Boston on a daily basis.

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

    The two airlines most popular with KAYAK users for flights from San Juan to Boston are Delta and JetBlue. With an average price for the route of $302 and an overall rating of 7.9, Delta is the most popular choice. JetBlue is also a great choice for the route, with an average price of $322 and an overall rating of 7.1.

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

    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 Airport to Boston.

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

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

    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 Boston with an airline and back to San Juan Airport with another airline. Booking your flights between San Juan Airport and BOS 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 Airport to Boston?

    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 Boston from San Juan Airport 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 Boston

  • Looking for a cheap flight? 25% of our users found flights on this route for $156 or less one-way and $223 or less round-trip.

Prefer to fly direct from San Juan Airport to Boston?

 
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 Boston Logan Intl.
Find which airlines fly direct from San Juan Luis Munoz Marin Intl Airport to Boston Logan Intl Airport, which days they fly and book direct flights.

Direct departures

San Juan Luis Munoz Marin Intl to Boston Logan Intl

Monday

Delta,JetBlue

Delta,JetBlue

Tuesday

Delta,JetBlue

Delta,JetBlue

Wednesday

Delta,JetBlue

Delta,JetBlue

Thursday

Delta,JetBlue

Delta,JetBlue

Friday

Delta,JetBlue

Delta,JetBlue

Saturday

Delta,JetBlue

Delta,JetBlue

Sunday

Delta,JetBlue

Delta,JetBlue

See more direct flights

Direct returns

Boston Logan Intl to San Juan Luis Munoz Marin Intl

Monday

Delta,JetBlue

Delta,JetBlue

Tuesday

Delta,JetBlue

Delta,JetBlue

Wednesday

Delta,JetBlue

Delta,JetBlue

Thursday

Delta,JetBlue

Delta,JetBlue

Friday

Delta,JetBlue

Delta,JetBlue

Saturday

Delta,JetBlue

Delta,JetBlue

Sunday

Delta,JetBlue

Delta,JetBlue

See more direct flights

Reviews of the top 4 airlines serving from Luis Munoz Marin Intl to Boston

 
See real verified KAYAK customer reviews for airlines flying from San Juan to Boston. 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 Luis Munoz Marin Intl to Boston? 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
DeltaOverall score based on 8459 reviews
7.9Comfort
8.1Boarding
7.8Entertainment
8.5Crew
7.2Food
Airline reviews

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.

10.0 ExcellentVictor, May 2026
MXP - JFK
Read more Delta reviews

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.

Boarding in Amsterdam is always chaotic. More complicated than needs to be ( boarding pass checked twice, once for general security, then by the airline). The bathrooms on this flight are dirty, and smelly. The food was mediocre at best The crew was decent

Seats in Delta Main are unbelievably close to the seat in front of. Hard to get a backpack under the seat.

Round trip flight to Canada and back to the US was smooth and efficient.

The agent at check in and at the gate were less than thrilled to be at work. I'm not a fan of Kayak's placement on the plane. I got put in the middle seat and none of my preferences were used.

Spanish speaker flight attendants were incredibly rude. A male flight attendant named Allen, grabbed my bag out of the overhead bin and moved it without my permission. When I asked what he was doing, he informed me that the overhead bins were public space? It would be easy to ignore this comment, as you don’t know the whole story, but the flight attendants were militant and rude. Delta, you can do better!

In ATL they have two sets of departure screens. Follow what is on your airline's departure board - the ATL Airport Authority departure board had completely incorrect details about the gate assignment for my flight, which would have made me miss boarding.

Flight was delayed it was hot while sitting on the plane, one engine was working on the plane until they had to do some jimmy rigging down the runway in order for the other engine to charge up. It was ridiculous

The flight was very good and the staff was very friendly and helpful!

The only thing I would say is we tried to get on a standby earlier flight, but with our fair we couldn’t. That seems senseless to leave with open seats..

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

There was a screen but no earphones that could use the older input so I could listen to anything.

Jet blue just had great service overall! Only a little turbulence heading out of Austin, otherwise the jet stream helped the speed of the trip!

Boarding was quick and efficient. The flight crew were friendly. There were limited food options available on the flight. The pocket guide said there would be salad and sandwich sections available on flights over 3.5 hours. The only food available were snack boxes. And those were limited as well. My flight was over 5 hours. The entertainment system worked well. I had both extra legroom seats and regular coach seats. The seats were not very comfortable. The entertainment controls in the armrest made it difficult to rest my arm without changing the channel on my neighbors TV. Overall, my experience was mediocre.

Boarding was fast, easy, and we landed early. The entertainment system was very buggy and kept resetting throughout the flight.

I purchased ticket so our daughter ( a minor) can sit next to her mother. No help at gate after kayak insisted that this could be done. She ended sitting by herself

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

Terrible. There was a lot of misleading information regarding ticketing, seat upgrades, & boarding group. I also expect my seat will recline. I have back problems & it is very painful for me of the seat doesn’t recline. In addition, when I choose a fare that allows me a carry-on bag, I expect to be able to carry it on. Not be forced to check it. Thos happened on my flight to MCO & back to Boston. Not sure I will ever fly JetBlue again. Further I bought the ticket through hat deal. I will NEVER do that again. They were incapable of providing an accurate record locator # for either leg of the trip. I had to call them before each flight with me VERY stressed about whether I would actually be able to get on my flight. Who does that? Who books flight & then FAILS to give an accurate record locator? Twice!

Jet Blue has excellent everything, Friendly customer service and staff, clean aircraft’s and is always on time.

Entertainment and wifi were very sub-par - audio issues and no wifi

The AC broke and we were onboard for 2 hrs waiting for them to fix it. It was so hot and we could not get any water or anything to drink. They finally let us off the plane after the second attempt and we boarded a new plane. We didn't land till 12:15am!

The seats on this aircraft were so uncomfortable it was like sitting on high school gym bleachers. I’m not sure we will fly spirit again. I also paid for the so called shortcut security and ended up being told to get in the regular security line, don’t waste your money.

Spirit is always late. Every single time. Always a different reason

My flight was ultimately cancelled but the lack of updates and professionalism from the crew leading up to the cancellation announcement was frustrating for all passengers.

Flight was cancelled without explanation or option for same day or next day flight

Had to pay for my bag a mini weekender bag 100 dollar fee

Bad. I know TSA is a mess right now but they “overbooked” the flight and almost didn’t let 10 of us on. Can’t put even a normal backpack under the seat, tray table is barely a foot wide, have to pay for literally everything. Apparently you can bid on your seats, too, so really the baseline ticket only covers the possibility of maybe getting on the plane. The staff were nice though, can only imagine the stress they are under.

Customer service online / on the phone are horrible. Flight crew is great but gate agents and customer service are terrible

We flew Spirit because it was cheaper but the seats were so uncomfortable. I don;t need to be fed snacks on a plane but when it's a 3-4 hour trip then at least a drink is nice. The flight attendants had nothing to do the whole flight except for gossip loudly to each other right behind our seats, and they talked so much my husband couldn't even rest! I was fine with no tv or entertainment but the seats were so uncomfortable with no recline, no padding, and I am short but even for me to leg room was tough for a 3-4 hour trip. We probably would fly spirit again if we had to, but it's definitely not our favorite!

The flight itself and the crew were great. Sitting on the tarmac for over an hour until our gate opened up was really frustrating. Missed our scheduled bus and got home two hours later

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 Luis Munoz Marin Intl to Boston

Information on your arrival and departure airports