SJU - BOS

$100 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 3/12. 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
$158
Typical prices: $162-$303
Spirit Airlines, Frontier
Fri 4/3Tue 4/7
SJU - BOS • Non-stop
Cheapest non-stop
$158
Typical prices: $167-$317
Frontier, Spirit Airlines
Sat 4/11Sun 4/12
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
Expert advice
Expert advice
Expert advice
Top airlines
Spirit Airlines
Cheapest • from $160 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Every day
You can fly direct with Delta, JetBlue and others. Average duration is 4h 14m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Avoid delays
Delta
Most punctual • 89% on-time
Night flights
Best time • Fewest delays
Insights
Insights
Insights
Insights
Top layover airports
Philadelphia (PHL)
Cheapest • Avg $168 (round-trip)
New York (JFK)
Shortest trip • 6h 30m (one-way)
Insights
Insights
Insights
Insights
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 11% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
February
Cheapest • 24% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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

Fri, Apr 3 - Tue, Apr 7
Multiple Airlines Logo
10:00 am - 2:18 pm
SJU
-
BOS
4h 18mnonstop
Multiple Airlines Logo
11:18 am - 3:17 pm
BOS
-
SJU
3h 59mnonstop
$158Multiple Airlines
Sat, Apr 18 - Wed, Apr 22
Spirit Airlines Logo
10:25 am - 2:32 pm
SJU
-
BOS
4h 07mnonstop
Spirit Airlines Logo
2:12 pm - 6:06 pm
BOS
-
SJU
3h 54mnonstop
$160Spirit Airlines
Sat, Apr 4 - Tue, Apr 7
Frontier Logo
6:00 am - 10:16 am
SJU
-
BOS
4h 16mnonstop
Frontier Logo
11:18 am - 3:17 pm
BOS
-
SJU
3h 59mnonstop
$161Frontier
Thu, Apr 16 - Thu, Apr 23
Spirit Airlines Logo
10:25 am - 2:32 pm
SJU
-
BOS
4h 07mnonstop
Spirit Airlines Logo
2:12 pm - 6:06 pm
BOS
-
SJU
3h 54mnonstop
$162Spirit Airlines
Tue, Apr 7 - Tue, Apr 7
Multiple Airlines Logo
6:00 am - 10:16 am
SJU
-
BOS
4h 16mnonstop
Multiple Airlines Logo
3:23 pm - 7:19 pm
BOS
-
SJU
3h 56mnonstop
$165Multiple Airlines
Sat, Apr 4 - Sun, Apr 12
Multiple Airlines Logo
6:00 am - 10:16 am
SJU
-
BOS
4h 16mnonstop
Multiple Airlines Logo
3:23 pm - 7:19 pm
BOS
-
SJU
3h 56mnonstop
$167Multiple Airlines
Tue, Apr 7 - Tue, Apr 7
Frontier Logo
6:00 am - 10:16 am
SJU
-
BOS
4h 16mnonstop
Frontier Logo
12:42 pm - 12:52 am
BOS
-
SJU
12h 10m
1 stop
$171Frontier
Sat, Apr 18 - Wed, Apr 22
Spirit Airlines Logo
10:25 am - 2:32 pm
SJU
-
BOS
4h 07mnonstop
Spirit Airlines Logo
2:12 pm - 6:06 pm
BOS
-
SJU
3h 54mnonstop
$172Spirit Airlines
Sun, Jul 5 - Thu, Jul 30
Spirit Airlines Logo
10:35 am - 2:42 pm
SJU
-
BOS
4h 07mnonstop
Spirit Airlines Logo
3:47 pm - 7:41 pm
BOS
-
SJU
3h 54mnonstop
$175Spirit Airlines
Thu, Apr 9 - Mon, Apr 13
Frontier Logo
6:00 am - 10:16 am
SJU
-
BOS
4h 16mnonstop
Frontier Logo
12:42 pm - 12:52 am
BOS
-
SJU
12h 10m
1 stop
$176Frontier
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 April.

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 $203 (return) on average. On the other hand, the most expensive months are July and November, where the average cost of round-trip tickets is $309 and $304 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 $262, 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 11% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 7 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$100
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly and prices are also 5% 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 $100 for a one-way ticket and $158 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, American Airlines, Iberia, British Airways, and Finnair.

  • 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 $283 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 $310 and an overall rating of 7.2.

  • 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 $149 or less one-way and $197 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, Spirit Airlines

Delta, JetBlue, +1 more

Tuesday

Delta, Frontier, JetBlue, +1 more

Delta, Frontier, +2 more

Wednesday

Delta, JetBlue, Spirit Airlines

Delta, JetBlue, +1 more

Thursday

Delta, Frontier, JetBlue, +1 more

Delta, Frontier, +2 more

Friday

Delta, JetBlue, Spirit Airlines

Delta, JetBlue, +1 more

Saturday

Delta, Frontier, JetBlue, +1 more

Delta, Frontier, +2 more

Sunday

Delta, Frontier, JetBlue, +1 more

Delta, Frontier, +2 more

See more direct flights

Direct returns

Boston Logan Intl to San Juan Luis Munoz Marin Intl

Monday

Delta, JetBlue, Spirit Airlines

Delta, JetBlue, +1 more

Tuesday

Delta, Frontier, JetBlue, +1 more

Delta, Frontier, +2 more

Wednesday

Delta, JetBlue, Spirit Airlines

Delta, JetBlue, +1 more

Thursday

Delta, Frontier, JetBlue, +1 more

Delta, Frontier, +2 more

Friday

Delta, JetBlue, Spirit Airlines

Delta, JetBlue, +1 more

Saturday

Delta, Frontier, JetBlue, +1 more

Delta, Frontier, +2 more

Sunday

Delta, Frontier, JetBlue, +1 more

Delta, Frontier, +2 more

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 8245 reviews
7.2Food
7.9Comfort
8.5Crew
7.8Entertainment
8.1Boarding
Airline reviews

I was happy that I was able to get a last minute flight but unfortunately my seat was a middle seat. Even with Delta Comfort I wasn't comfortable

8.0 ExcellentSheila, Mar 2026
ATL - EWR
Read more Delta reviews

I was happy that I was able to get a last minute flight but unfortunately my seat was a middle seat. Even with Delta Comfort I wasn't comfortable

There’s not much to say about a one hour flight. This is a connection from LA to RNO that I missed the previous night due to a mechanical check delay on my originating flight from JFK to LAX. The short flight itself was fine. Instructions from the pilot and crew were per usual. The coffee was barely lukewarm, which possibly was purposeful so we would down it quickly. Bags were already on carousel upon reaching baggage claim, which was excellent.

Flight was warm for first few hours and quite rough

Seat was extremely hard which made even a short 1 hour 20 minute flight fairly uncomfortable.

Improve boarding- the zone assignment and boarding is always a mess- there is not clear instructions of what is going on at the gate. As a meme bet there is no more selection of a good seats when booking. Only offers middle seats to choose or pay extra. There is not more benefit with Amex no benefits at all.

alike schedule and times it’s very good for me, I will stay wad delta for ever

Everything was good except wifi and a leaking drink chiller. The floor was all wet and my bag was soaked. Did not notice until debarking. Have not heard back from Delta. Even though this was leg one of an international flight in first class, they denied access to their Sky Club - very disappointing!

The staff was fine. The plane was extremely tight, and I paid for the wifi and it did not work at all. I was actually going to ask for a refund.

two hour delay and the Delta representative on the PA system was unable to understand

An awesome flight crew. FC seat cushion just doesn’t cut it for a 3+ hour flight.

It was a pretty smooth flight, I tend to get mini anxiety attacks during flights, however, this time was pretty smooth and I was able to relax. The only thing, I was having issues to connect to the Flyfi internet. I was not able to connect at all, I turned off my phone a couple times and didnt work.

My flight got delayed and eventually canceled, then rescheduled. I and several others had a connection from Boston to Paris and asked several times if we would make it. They assured us we would and then rebooked us mid flight without our consent and closed doors early even though they said they communicated we were a bit delayed. We got stranded in Boston and I opted with being rebooked for a different connection to France since they refused to pay for a Hotel. I've now been in Europe for 5 days and still haven't recieved my bags. There was absolutely no urgency for the fact that I'm in a foreign country with absolutely no change of clothes or any of my medication. Such an overwhelming and frustrating experience.

The crew for the flight was A+ top notch. They were friendly and professional and made the flight a very relaxing and enjoable.

Rude crew member. She seemed annoyed at me without me saying a single word. Also loudly admonished me for having my bag next to my seat instead of tucked away before landing. Just telling me to put it away and guiding me without giving me a lecture would have been enough.

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

Friendly crew. Poor food service maybe due to full flight. All in all, you get what you pay for.

very difficult boarding process - aggressive passengers not the friendliest crew

The plane was late to leave.. Internet was lousy. TV was not working. when we arrived, We stayed on the plane for a long time before we got to the gate. It took us a long time to retrieve our luggage because they didn’t know what carousel to send them to. It was a bad experience.

There were mutliple delays. There was inconsistent, delayed, and poor communication regarding the delays.

Seats were not too comfortable; it was impossible to locate the underseat power outlet.

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.

I was double booked for my ticket- they have record of it and admitted to their error but wouldn’t let me board until I paid once again for the fare- have documentation of their mistake -

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

We sat on the tarmac for an hour and a half after landing.

The flight from Boston to San Juan was boring since you guys don’t offer wings if during the flight. The returning flight was better offering WiFi to passengers. The food was horrible not enough on stock.serve paying customers better.

There absolutely needs to be WiFi on flights. Not sure why this new aircraft did not have the capability, but it made for a very frustrating flight. I honestly would have paid twice as much for another airline to have WiFi as an option, especially as a mom with kids who have disabilities.

Forgot my anxiety pills, crew didn’t knew what to do then few minutes after they gave me a bottle of water and told me to walk thru the hall. They should be trained for this kinds of situations cause it really would help someone. Tips: bottle of water (airports should allow passengers at least having them thru) for this kinds of situations. Alcohol wipes just in case they don’t have. Tap water on skin (preferably little cold or a normal temperature) this will help.

We were on the tarmac waiting for a gate at Logan for 40, minutes. The crew handled it well. Can't blame the airline.

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.

Frontier line changes my flight schedule with out my authorization. They never ask me and with out my concern they cut off 4 hours of my vacation they force my to leave 4 hours early from Puerto Rico.

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 Luis Munoz Marin Intl to Boston

Information on your arrival and departure airports