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$88+ Cheap flights from Luis Munoz Marin Intl (SJU) to Boston (BOS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/13. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — BOS
Jan 27 — Feb 31
Tue 1/27
Tue 2/3
1 adult, Economy
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Find cheap flights from Luis Munoz Marin Intl to Boston with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from San Juan Luis Munoz Marin Intl to Boston Logan Intl are usually found in February or January, booked 47 days in advance, depart on a Saturday or Friday and return on a Wednesday

Cheap flight deals from Luis Munoz Marin Intl to Boston

Cheapest flights from Luis Munoz Marin Intl to Boston
Explore the most affordable flight options available from Luis Munoz Marin Intl to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 28, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/308:00 amSJU - BOS
Nonstop4h 23mFrontier
Thu 1/112:18 pmBOS - SJU
Nonstop4h 04mFrontier
Deal found 12/26$146
This Cheapflightsfares deal was found by Cheapflights users on 12/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/308:00 amSJU - BOS
Nonstop4h 23mFrontier
Sun 1/410:18 amBOS - SJU
Nonstop4h 04mFrontier
Deal found 12/27$155
This Kiwi.com deal was found by Cheapflights users on 12/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/308:00 amSJU - BOS
Nonstop4h 23mMultiple Airlines
Mon 1/57:34 pmBOS - SJU
Nonstop4h 07mMultiple Airlines
Deal found 12/26$174
This eDestinos deal was found by Cheapflights users on 12/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/313:15 pmSJU - BOS
Nonstop4h 24mSpirit Airlines
Tue 1/67:34 pmBOS - SJU
Nonstop4h 07mSpirit Airlines
Deal found 12/26$179
This Kiwi.com deal was found by Cheapflights users on 12/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/293:15 pmSJU - BOS
Nonstop4h 24mMultiple Airlines
Sun 1/410:18 amBOS - SJU
Nonstop4h 04mMultiple Airlines
Deal found 12/26$195
This Cheapflightsfares deal was found by Cheapflights users on 12/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/313:15 pmSJU - BOS
Nonstop4h 24mSpirit Airlines
Sat 1/37:34 pmBOS - SJU
Nonstop4h 07mSpirit Airlines
Deal found 12/27$197
This CheapOair deal was found by Cheapflights users on 12/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/293:15 pmSJU - BOS
Nonstop4h 24mSpirit Airlines
Sat 1/37:34 pmBOS - SJU
Nonstop4h 07mSpirit Airlines
Deal found 12/26$199
This Expedia deal was found by Cheapflights users on 12/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/308:00 amSJU - BOS
Nonstop4h 23mMultiple Airlines
Tue 1/131:00 pmBOS - SJU
Nonstop4h 05mMultiple Airlines
Deal found 12/26$202
This eDestinos deal was found by Cheapflights users on 12/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/283:15 pmSJU - BOS
Nonstop4h 24mSpirit Airlines
Thu 1/83:18 pmBOS - SJU
Nonstop4h 06mSpirit Airlines
Deal found 12/27$206

Find flight deals from Luis Munoz Marin Intl to Boston

Discover tips and strategies to find the most affordable flight options for your journey from Luis Munoz Marin Intl (SJU) to Boston (BOS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 28, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$134
(Kiwi.com)

One-way from

$88
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$246

Good round-trip deal

$124 or less

Good one-way deal

$129 or less
Provider with most accurate pricing for San Juan Luis Munoz Marin Intl-Boston Logan Intl flight deals.
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Provider most trusted by Cheapflights users for San Juan Luis Munoz Marin Intl-Boston Logan Intl flights.
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From San Juan Luis Munoz Marin Intl to Boston Logan Intl
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One-way flight from San Juan Luis Munoz Marin Intl to Boston Logan Intl
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($45 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from San Juan Luis Munoz Marin Intl to Boston Logan Intl.
Search Deals
Price to beat on a one-way flight from San Juan Luis Munoz Marin Intl to Boston Logan Intl.
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Luis Munoz Marin Intl to Boston that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 28, 2025.
Use the filters below to find and compare flights from San Juan Luis Munoz Marin Intl Airport to Boston that are best for you.

Fly from

Luis Munoz Marin Intl

Fly to

Boston

Route

Depart

Return

Price

San JuanBoston

SJU - BOS

SJUBOS

San Juan Luis Munoz Marin Intl

Fri 1/23

10:52 am-2:12 pm

Nonstop4h 20m

Boston Logan Intl

Mon 1/26

3:18 pm-8:24 pm

Nonstop4h 06m

$135

San JuanBoston

SJU - BOS

SJUBOS

San Juan Luis Munoz Marin Intl

Fri 2/6

10:52 am-2:12 pm

Nonstop4h 20m

Boston Logan Intl

Mon 2/9

7:00 am-11:33 pm

1 stop15h 33m

$156

San JuanBoston

SJU - BOS

SJUBOS

San Juan Luis Munoz Marin Intl

Fri 1/23

6:00 am-2:38 pm

1 stop9h 38m

Boston Logan Intl

Sun 1/25

5:34 am-3:35 pm

1 stop9h 01m

$176

San JuanBoston

SJU - BOS

SJUBOS

San Juan Luis Munoz Marin Intl

Sat 1/24

6:00 am-2:38 pm

1 stop9h 38m

Boston Logan Intl

Sat 1/31

3:43 pm-9:47 am

1 stop17h 04m

$176

San JuanBoston

SJU - BOS

SJUBOS

San Juan Luis Munoz Marin Intl

Thu 2/5

7:15 pm-10:28 pm

Nonstop4h 13m

Boston Logan Intl

Sun 2/8

6:45 pm-11:48 pm

Nonstop4h 03m

$188

San JuanBoston

SJU - BOS

SJUBOS

San Juan Luis Munoz Marin Intl

Fri 1/23

2:05 am-9:14 am

1 stop8h 09m

Boston Logan Intl

Sat 1/31

4:05 pm-6:11 am

2 stops13h 06m

$197

San JuanBoston

SJU - BOS

SJUBOS

San Juan Luis Munoz Marin Intl

Thu 1/29

8:35 am-6:32 pm

2 stops10h 57m

Boston Logan Intl

Mon 2/2

4:15 pm-12:36 am

1 stop7h 21m

$197

San JuanBoston

SJU - BOS

SJUBOS

San Juan Luis Munoz Marin Intl

Fri 6/5

1:30 pm-5:53 pm

Nonstop4h 23m

Boston Logan Intl

Tue 6/9

8:15 am-12:23 pm

Nonstop4h 08m

$202

San JuanBoston

SJU - BOS

SJUBOS

San Juan Luis Munoz Marin Intl

Thu 3/26

5:10 am-9:22 am

Nonstop4h 12m

Boston Logan Intl

Sun 3/29

7:20 pm-11:23 pm

Nonstop4h 03m

$202

San JuanBoston

SJU - BOS

SJUBOS

San Juan Luis Munoz Marin Intl

Thu 5/28

1:30 pm-5:53 pm

Nonstop4h 23m

Boston Logan Intl

Tue 6/2

8:20 am-12:28 pm

Nonstop4h 08m

$202

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/27

Showing 1-10 of 22 results
1
2
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Compare providers for flights from Luis Munoz Marin Intl to Boston

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Luis Munoz Marin Intl to Boston in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
Trip.comPrice Accuracy2 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
BudgetAirPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Juan Luis Munoz Marin Intl Airport-Boston flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on San Juan Luis Munoz Marin Intl Airport-Boston flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from San Juan Luis Munoz Marin Intl Airport-Boston flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Juan Luis Munoz Marin Intl Airport-Boston flights, Cheapflights users trust CheapOair the most. CheapOair has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Juan Luis Munoz Marin Intl Airport-Boston flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Luis Munoz Marin Intl to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston from Luis Munoz Marin Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from San Juan Luis Munoz Marin Intl Airport to Boston

How far ahead should I book a flight from San Juan Luis Munoz Marin Intl Airport to Boston?

Use this chart to determine the optimal time to book a round-trip flight from Luis Munoz Marin Intl to Boston. Price data was last updated on December 26, 2025.

Booking 47 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Juan Luis Munoz Marin Intl Airport to Boston. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, February is the cheapest month in which you can book a flight from San Juan Luis Munoz Marin Intl Airport to Boston (average of $55). Flying from San Juan Luis Munoz Marin Intl Airport to Boston in November is currently the most expensive (average of $141). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SJU to BOS?

Find hourly flight availability from Luis Munoz Marin Intl to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 28, 2025.

When flying from San Juan Luis Munoz Marin Intl Airport to Boston, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 19% versus a flight in the morning.

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

Use this chart to determine the cheapest time to fly round-trip from Luis Munoz Marin Intl to Boston. Price data was last updated on December 27, 2025.

Travelers seeking maximum savings on their San Juan Luis Munoz Marin Intl Airport to Boston flight should consider departing on Saturday afternoons when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

The best insider tips for San Juan Luis Munoz Marin Intl Airport to Boston flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your San Juan Luis Munoz Marin Intl Airport to Boston trip
Airlines
Spirit Airlines

Spirit’s Big Front Seats offer 11 inches more legroom and larger tray tables.


Spirit’s Wi-Fi allows streaming; book a plan during ticket purchase for savings.

Read more about Spirit AirlinesBy Daniel Scheffler
Frontier

Frontier’s UpFront Plus seats offer a guaranteed empty middle seat for extra comfort.


Frontier’s Zone 1 boarding is available with a carry-on bag or special fare bundle.

Read more about FrontierBy Marisa Garcia
Airports
SJU

Security wait times at SJU can vary. Arrive two hours early for domestic flights to ensure a smooth departure.

Read more about SJUBy Brandon Schultz
BOS

For a scenic arrival, consider the water taxi from BOS to Boston’s Long Wharf or Seaport District.

Read more about BOSBy Paul Rubio
Our travel experts
Daniel Scheffler

Daniel Scheffler

Expert on Spirit Airlines

Daniel Scheffler

Daniel Scheffler

Daniel Scheffler is a travel writer, podcaster, and producer. Born in Africa, bred in Europe and now living in America he has traveled to 140 countries (and all 50 U.S. states). Plus he has stayed at over 2500 hotels across the globe. His original shows Everywhere and Without Maps (available on Spotify) showcase his beliefs, travel is about humanity and sharing that beauty. And thus it reminds you that you shouldn’t believe everything you think.

Read more
Marisa Garcia

Marisa Garcia

Expert on Frontier

Marisa Garcia

Marisa Garcia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Paul Rubio

Paul Rubio

Expert on BOS

Paul Rubio

Paul Rubio

Travel journalist and photographer Paul Rubio is a Miami native (and current resident), who has lived in nine countries and traveled to 137. He is an expert in luxury travel, eco-travel, loyalty programs, hotels, airports and airlines. He is a contributing editor at AFAR, Condé Nast Traveler, LUXURY Magazine, and Palm Beach Illustrated.

Read more
Brandon Schultz

Brandon Schultz

Expert on SJU

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more

Reviews of airlines servicing Boston

Get insights into the airlines that provide service to Boston. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Boston. Reviews last updated December 28, 2025.
Get a feel of what it's like to fly with Delta, JetBlue, and Spirit Airlines from San Juan Luis Munoz Marin Intl Airport to Boston by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,016 reviews

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

7.9

Comfort

7.9

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,016 reviews
Delta
7.9
Good
8,016 reviews

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

7.9

Comfort

7.9

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
JetBlue
7.2
Good
2,901 reviews
Delta
7.9
Good
8,016 reviews

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

7.9

Comfort

7.9

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Spirit Airlines
6.3
Okay
8,214 reviews
Delta
7.9
Good
8,016 reviews

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

7.9

Comfort

7.9

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Frontier
5.8
Fair
3,064 reviews
Delta
7.9
Good
8,016 reviews

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

7.9

Comfort

7.9

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Luis Munoz Marin Intl to Boston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Boston from San Juan Luis Munoz Marin Intl?

    For a flight from San Juan Luis Munoz Marin Intl to Boston, you will be flying into Logan Intl. Boston Logan Intl (BOS) is just 2.6 mi from the center of the city. Logan Intl is the only Boston airport and it handles 19 inbound flights from San Juan Luis Munoz Marin Intl per day. 4 airlines have flights to Boston Logan Intl from San Juan Luis Munoz Marin Intl on a regular basis.

  • How long is the flight from San Juan Luis Munoz Marin Intl Airport to Boston?

    Spirit Airlines can get you from San Juan Luis Munoz Marin Intl Airport to Boston in just under 4h 20m. Your travel time will be generally consistent. The distance between San Juan Luis Munoz Marin Intl Airport and Boston is about 1678 mi. Generally, flights for this route are nonstop.

  • What are the cheapest airlines flying from San Juan Luis Munoz Marin Intl Airport to Boston round-trip?

    Spirit Airlines, at $71, was found to be the cheapest airline from San Juan Luis Munoz Marin Intl Airport to Boston.Alternate airlines to your destination round-trip include Frontier and Delta. Spirit Airlines is priced at 71% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from San Juan Luis Munoz Marin Intl Airport to Boston one-way?

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $53. Spirit Airlines flights start at $69 while deals on JetBlue start at $111 one-way.

  • What are the most reliable airlines from San Juan Luis Munoz Marin Intl Airport to Boston?

    No one likes to see their flight delayed. When booking a flight from San Juan Luis Munoz Marin Intl Airport to Boston consider choosing WestJet (100%), Etihad Airways (96%) or KLM (93%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from San Juan Luis Munoz Marin Intl Airport to Boston?

    Looking for the cheapest flight from San Juan Luis Munoz Marin Intl Airport to Boston? While on average our users pay $187, our data indicates the cheapest price to be $76. The most popular route (San Juan Luis Munoz Marin Intl - Boston Logan Intl), is priced around $134.

  • Can I find deals for flights from Luis Munoz Marin Intl to Boston that include hotel bookings?

    Yes. In addition to deals on Luis Munoz Marin Intl to Boston flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Luis Munoz Marin Intl to Boston?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Luis Munoz Marin Intl to Boston.

  • Can I find deals for business class flights from Luis Munoz Marin Intl to Boston?

    Yes. Cheapflights offers flight deals from Luis Munoz Marin Intl to Boston by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, February is the cheapest month in which you can book a flight from San Juan Luis Munoz Marin Intl Airport to Boston (average of $55). Flying from San Juan Luis Munoz Marin Intl Airport to Boston in November is currently the most expensive (average of $141). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
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Watertown
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Alternative routes for Luis Munoz Marin Intl to Boston

See prices for flight routes from nearby airports that may be better suited for you.
Luis Munoz Marin Intl to Hartford flights
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Top 4 airlines flying from Luis Munoz Marin Intl to Boston

Discover the top 4 airlines that operate flights from Luis Munoz Marin Intl to Boston. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$86Average$219FlexibilityNo cancel feeOn-time65%
FrontierCheapest$87Average$170FlexibilityNo cancel feeOn-time62%
DeltaCheapest$136Average$284FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$182Average$312FlexibilityNo cancel feeOn-time62%

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