$96 Find Cheap Flights from Puerto Rico 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 to Boston departing on 3/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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 for flights to Boston, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Boston, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Puerto Rico to Boston

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Puerto Rico 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 Puerto Rico to Boston

Wed, Apr 8 - Sun, Apr 12
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
Thu, Apr 2 - Wed, Apr 8
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
$159Multiple Airlines
Fri, Mar 27 - Tue, Mar 31
Spirit Airlines Logo
10:00 am - 2:18 pm
SJU
-
BOS
4h 18mnonstop
Spirit Airlines Logo
3:23 pm - 7:19 pm
BOS
-
SJU
3h 56mnonstop
$160Spirit Airlines
Thu, Mar 26 - Sun, Mar 29
Spirit Airlines Logo
10:00 am - 2:18 pm
SJU
-
BOS
4h 18mnonstop
Spirit Airlines Logo
3:23 pm - 7:19 pm
BOS
-
SJU
3h 56mnonstop
$161Spirit Airlines
Thu, Apr 2 - Sun, Apr 5
Frontier Logo
6:00 am - 10:16 am
SJU
-
BOS
4h 16mnonstop
Frontier Logo
11:18 am - 3:17 pm
BOS
-
SJU
3h 59mnonstop
$162Frontier
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
Fri, May 1 - Tue, May 5
United Airlines Logo
12:15 am - 9:11 am
BQN
-
BOS
8h 56m
1 stop
United Airlines Logo
7:30 am - 11:09 pm
BOS
-
BQN
15h 39m
2 stops
$312United Airlines
Fri, May 1 - Tue, May 5
United Airlines Logo
12:15 am - 9:11 am
BQN
-
BOS
8h 56m
1 stop
United Airlines Logo
3:32 pm - 11:09 pm
BOS
-
BQN
7h 37m
1 stop
$328United Airlines
Mon, Mar 23 - Mon, Mar 30
JetBlue Logo
9:15 pm - 9:12 am
BQN
-
BOS
11h 57m
1 stop
JetBlue Logo
11:09 am - 9:53 pm
BOS
-
BQN
10h 44m
1 stop
$364JetBlue
Fri, Mar 27 - Sun, Apr 5
JetBlue Logo
9:15 pm - 9:12 am
BQN
-
BOS
11h 57m
1 stop
JetBlue Logo
9:25 pm - 1:27 pm
BOS
-
BQN
16h 02m
1 stop
$406JetBlue
Booking Insights

KAYAK's insights & trends for flights to Boston

Get data-powered insights and trends for flights to Boston to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly to Boston?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights 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 to Boston is February, where tickets cost $208 on average for one-way flights. On the other hand, the most expensive months are July and November, where the average cost of tickets from Puerto Rico is $310 and $304 respectively. For return trips, the best month to travel is February with an average price of $208.

What is a good deal for flights to Boston?

If you’re looking for cheap airfare to Boston, 25% of our users found tickets to Boston for the following prices or less: From San Juan Luis Munoz Marin Intl Airport $144 one-way - $177 round-trip.

How far in advance should I book a flight to Boston?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights 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, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 42 days before departure.

Good to know

Low seasonMarch
Cheapest flight$94
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly and prices are also 11% lower on average.
Flight from San Juan Airport to Boston

FAQs - booking Boston flights

  • How far is Boston Logan Intl Airport from central Boston?

    Boston Logan Intl Airport is 3 miles from the center of Boston.

  • What is the name of Boston’s airport?

    When flying to Boston, you'll arrive at Boston Logan Intl Airport (BOS). The airport is also known as Boston Logan, General Edward Lawrence Logan Intl, or Logan Intl.

  • How much is a flight to Boston?

    On average, a flight to Boston costs $249. The cheapest price found on KAYAK in the last 2 weeks cost $81 and departed from San Juan Luis Munoz Marin Intl Airport.

  • What is the cheapest day to fly to Boston?

    Based on KAYAK data, the cheapest day to fly to Boston is Friday where tickets can be as cheap as $273. On the other hand, the most expensive day to fly is Monday, where prices are $347 on average.

  • How does KAYAK find such low prices on flights 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 to Boston.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boston is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights 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 with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight 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 up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Boston?

    The cheapest time of day to fly to Boston is generally in the evening, when flights cost $255 on average. The most expensive time of day to fly to Boston is generally in the morning, which is peak travel time and where the average cost of a ticket is $296.

Top tips for finding cheap flights to Boston

  • Looking for cheap airfare to Boston? 25% of our users found round-trip tickets to Boston for the following prices or less: From San Juan Luis Munoz Marin Intl $161
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Boston flight deals.

Reviews of the top 4 airlines serving from Puerto Rico to Boston

 
See real verified KAYAK customer reviews for airlines flying to Boston. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Puerto Rico to Boston. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with 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 8238 reviews
7.2Food
8.5Crew
7.8Entertainment
7.9Comfort
8.1Boarding
Airline reviews

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!

6.0 GoodAnonymous, Feb 2026
RDU - SEA
Read more Delta reviews

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.

2+hrs delay without any reason provided and a cramped flight

We waited an hour on the runway to get a gate in Orlando

Flight was delayed by 3-hours and their fix was… complimentary pretzels.

Flight was delayed due to crew being not on time

Flight crew issues delayed my flight by 2 1/2 hours. Causing me to miss my connection.

The staff on board and gate was nice - a welcome change from the usual. We also arrived early, which was a great benefit, given that it takes 30 minutes plus to get bags at SRQ.

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.

Flight was on time with no issues. Price is very competitive. Flight schedule works well for me

They charged late fees for selecting seats (no $0 options). They also changed my gate within the last half hour and are refusing to reimburse my costs to drive across the country with two small children in a rental car.

Seats were more spacious than other airlines. Crew kept us well informed as soon Ias we stepped into the plane.

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.

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