What is the cheapest airline to fly from Boston to San Juan Luis Munoz Marin Intl Airport round-trip?

Currently priced at $175, Spirit Airlines will fly you from Boston to San Juan Luis Munoz Marin Intl Airport and back. In addition to Spirit Airlines, many other airlines offer competitively priced options for your trip. This flight start at 34% lower than the current average price 3 months from now.

In terms of precipitation, rainfall in San Juan Luis Munoz Marin Intl Airport ranges from 2.2 - 6.1 inches per month. November is typically the wettest month, when rainfall can reach 6.1 in. February is typically the driest time to visit San Juan Luis Munoz Marin Intl Airport when rainfall is around 2.2 in.

If weather is an important factor for your trip to San Juan Luis Munoz Marin Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 77.0 F).

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

While on average a flight from Boston to San Juan Luis Munoz Marin Intl Airport is generally $538, our data shows the cheapest flight currently is $108. When looking at the most popular route, (Boston Logan Intl - San Juan Luis Munoz Marin Intl), you can expect to pay $174 for that flight.

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

Consider Delta (89%), Etihad Airways (84%) or EL AL (83%) when booking your flight. These represent the most reliable airlines when flying from Boston to San Juan Luis Munoz Marin Intl Airport.

What are the most popular airlines that fly from Boston to San Juan Luis Munoz Marin Intl Airport?

The most popular airlines flying from Boston to San Juan Luis Munoz Marin Intl Airport are American Airlines, JetBlue and Delta. Something to consider prior to booking your flight.

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

Friday flights are found to be more expensive to fly from Boston to San Juan Luis Munoz Marin Intl Airport. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to San Juan Luis Munoz Marin Intl Airport.

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

The best pricing can be found in the month of September. Prices to San Juan Luis Munoz Marin Intl Airport from Boston average $268. You can even find prices in September for less than $268, as users have found deals to San Juan Luis Munoz Marin Intl Airport from as low as $54. The month of December appears to be one of the more expensive times to travel to San Juan Luis Munoz Marin Intl Airport from Boston. Flying in the targeted month can save you up to 46%.

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

Boston Logan Intl (BOS) is the airport you will fly out of if you book a flight from Boston to San Juan Luis Munoz Marin Intl. You should not have trouble finding flights to San Juan Luis Munoz Marin Intl from Logan Intl; the airport handles an average of 14 outbound flights to San Juan Luis Munoz Marin Intl per day. You should also have plenty of airline options to choose from since 7 airlines have flights from the Boston airport to San Juan Luis Munoz Marin Intl. It is only a 2.6 mi journey to Logan Intl (BOS) from Boston’s city center.

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

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

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

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

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

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

$96+ Flights from Boston to San Juan Luis Munoz Marin Intl Airport

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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Boston Logan Intl to San Juan Luis Munoz Marin Intl are usually found in September or August, booked 27 days in advance, depart on a Monday or Tuesday and return on a Friday

Cheap flight deals from Boston to Luis Munoz Marin Intl

Round-trip from	$175 (FlightHub)
One-way from	$96 (Cheapflightsfares)
Popular in	December
Cheapest in	September
Average price	$283
Good round-trip deal	$303 or less
Good one-way deal	$182 or less

From Boston Logan Intl to San Juan Luis Munoz Marin Intl

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One-way flight from Boston Logan Intl to San Juan Luis Munoz Marin Intl

Search Deals

Highest demand for flights based on searches. 10% potential increase in price ($30 potential increase over avg. RT price).

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Cheapest flight prices on average. 4% potential price decrease ($12 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Price to beat on a round-trip flight from Boston Logan Intl to San Juan Luis Munoz Marin Intl.

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Price to beat on a one-way flight from Boston Logan Intl to San Juan Luis Munoz Marin Intl.

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Find flight deals from Boston to Luis Munoz Marin Intl

Cheapest flights from Boston to Luis Munoz Marin Intl
Explore the most affordable flight options available from Boston to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 11, 2025.

dom. 8/36:10 amBOS - SJU

1 stop14h 59mSpirit Airlines

jue. 8/73:13 pmSJU - BOS

Nonstop4h 17mSpirit Airlines

Deal found 7/9

$175

sáb. 7/266:00 amBOS - SJU

1 stop18h 27mMultiple Airlines

sáb. 8/29:01 pmSJU - BOS

1 stop11h 57mMultiple Airlines

Deal found 7/9

$207

Best flights from Boston to Luis Munoz Marin Intl
Discover carefully curated flight deals from Boston to Luis Munoz Marin Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated julio 11, 2025.

dom. 8/36:10 amBOS - SJU

1 stop14h 59mSpirit Airlines

jue. 8/73:13 pmSJU - BOS

Nonstop4h 17mSpirit Airlines

Deal found 7/9

$175

sáb. 7/266:00 amBOS - SJU

1 stop18h 27mMultiple Airlines

sáb. 8/29:01 pmSJU - BOS

1 stop11h 57mMultiple Airlines

Deal found 7/9

$207

Last-minute flights from Boston to Luis Munoz Marin Intl
Discover last-minute flight deals from Boston to Luis Munoz Marin Intl. Data last updated julio 11, 2025 and is based on user searches.

mar. 7/154:00 pmBOS - SJU

1 stop6h 50mAmerican Airlines

vie. 7/187:54 amSJU - BOS

1 stop12h 59mAmerican Airlines

Deal found 7/10

$260

vie. 7/189:40 amBOS - SJU

1 stop14h 52mMultiple Airlines

jue. 7/243:13 pmSJU - BOS

Nonstop4h 17mMultiple Airlines

Deal found 7/9

$210

vie. 7/186:00 amBOS - SJU

1 stop10h 00mFrontier

sáb. 7/264:54 pmSJU - BOS

1 stop19h 08mFrontier

Deal found 7/10

$250

sáb. 7/198:45 pmBOS - SJU

Nonstop4h 04mJetBlue

lun. 7/286:00 amSJU - BOS

Nonstop4h 07mJetBlue

Deal found 7/10

$246

dom. 7/2010:03 amBOS - SJU

Nonstop4h 05mSpirit Airlines

dom. 7/273:13 pmSJU - BOS

Nonstop4h 17mSpirit Airlines

Deal found 7/9

$180

sáb. 7/266:00 amBOS - SJU

1 stop18h 27mMultiple Airlines

sáb. 8/29:01 pmSJU - BOS

1 stop11h 57mMultiple Airlines

Deal found 7/9

$207

dom. 8/36:10 amBOS - SJU

1 stop14h 59mSpirit Airlines

jue. 8/73:13 pmSJU - BOS

Nonstop4h 17mSpirit Airlines

Deal found 7/9

$175

One-way flights from Boston to Luis Munoz Marin Intl
Search for one-way flight options from Boston to Luis Munoz Marin Intl. Find affordable one-way fares based on user searches. Data last updated julio 11, 2025.

dom. 8/316:30 amBOS - SJU

1 stop7h 47mSpirit Airlines

Deal found 7/9

$96

vie. 8/299:20 amBOS - SJU

1 stop9h 48mFrontier

Deal found 7/8

$114

mar. 7/228:10 amBOS - SJU

Nonstop4h 06mDelta

Deal found 7/10

$123

mar. 7/229:12 amBOS - SJU

1 stop13h 38mAmerican Airlines

Deal found 7/10

$130

lun. 7/145:50 amBOS - SJU

1 stop6h 45mSouthwest

Deal found 7/9

$133

lun. 7/148:45 pmBOS - SJU

Nonstop4h 06mJetBlue

Deal found 7/9

$147

Cheapflights Fare Finder

Use the filters below to find and compare flights from Boston to San Juan Luis Munoz Marin Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

dom. 8/3

6:10 am-9:09 pm

1 stop14h 59m

San Juan Luis Munoz Marin Intl

jue. 8/7

3:13 pm-7:30 pm

Nonstop4h 17m

$175

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

sáb. 7/26

6:00 am-12:27 am

1 stop18h 27m

San Juan Luis Munoz Marin Intl

sáb. 8/2

9:01 pm-8:58 am

1 stop11h 57m

$207

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

dom. 8/31

6:30 am-2:17 pm

1 stop7h 47m

$96

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

vie. 8/29

9:20 am-7:08 pm

1 stop9h 48m

$114

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

mar. 7/22

8:10 am-12:16 pm

Nonstop4h 06m

$123

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

dom. 7/13

1:40 pm-5:44 pm

Nonstop4h 04m

$128

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

mar. 7/22

9:12 am-10:50 pm

1 stop13h 38m

$130

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

lun. 7/14

5:50 am-12:35 pm

1 stop6h 45m

$133

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/9

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

Cheapflights partnered with top experts to bring you the best recommendations for your Boston to San Juan Luis Munoz Marin Intl Airport trip

Airlines

Frontier

Frontier offers extra comfort seats with 32” separation for a fee, enhancing your flight experience.

Frontier’s Discount Den offers Kids Fly Free, ideal for family travel savings.

Read more about Frontierby Marisa Garcia

Spirit Airlines

Spirit’s Big Front Seats offer 11 inches more legroom, ideal for comfort on medium-haul flights.

Spirit’s Saver$ Club offers rotating deals and discounts on luggage and seats, maximizing savings.

Read more about Spirit Airlinesby Daniel Scheffler

Airports

BOS

Use the FlyLogan App to pre-order meals and save time at BOS. Most eateries participate, ensuring your meal is ready for pick-up.

SJU

Opt for rideshares like Uber at SJU for convenience and cashless payments. Taxis are available but often require cash despite claiming card acceptance.

Our travel experts

Marisa Garcia

Expert on Frontier

Daniel Scheffler

Expert on Spirit Airlines

Paul Rubio

Expert on BOS

Brandon Schultz

Expert on SJU

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

Have a flexible travel schedule? Discover the best time to fly to Luis Munoz Marin Intl from Boston 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 Boston to San Juan Luis Munoz Marin Intl Airport

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

The price you pay for your flight from Boston to San Juan Luis Munoz Marin Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 27 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, September is the cheapest month in which you can book a flight from Boston to San Juan Luis Munoz Marin Intl Airport (average of $254). Flying from Boston to San Juan Luis Munoz Marin Intl Airport in June is currently the most expensive (average of $339). 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 BOS to SJU?

A simple way to save on the total cost of your ticket is to fly from Boston to San Juan Luis Munoz Marin Intl Airport in the morning. If you’re flexible enough to do this you can expect to save up to 13% on your trip compared to booking a flight in the evening.

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

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

Weekly flight availability from Boston to San Juan Luis Munoz Marin Intl Airport

The most flights from BOS to SJU are scheduled on a Wednesday (23 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (8 on average).

Reviews of airlines servicing Luis Munoz Marin Intl

Peruse reviews from past customers who have flown with Southwest, Delta, and JetBlue from Boston to San Juan Luis Munoz Marin Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,249 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Southwest

8.0

Very good

4,249 reviews

Southwest

8.0

Very good

4,249 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Delta

8.0

Very good

7,951 reviews

Southwest

8.0

Very good

4,249 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

JetBlue

7.3

Good

2,913 reviews

Southwest

8.0

Very good

4,249 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

American Airlines

7.2

Good

10,000 reviews

Southwest

8.0

Very good

4,249 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Spirit Airlines

6.3

Okay

8,055 reviews

Southwest

8.0

Very good

4,249 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Related info for your journey

What airport do you fly from for flights from Boston to San Juan Luis Munoz Marin Intl?
Boston Logan Intl (BOS) is the airport you will fly out of if you book a flight from Boston to San Juan Luis Munoz Marin Intl. You should not have trouble finding flights to San Juan Luis Munoz Marin Intl from Logan Intl; the airport handles an average of 14 outbound flights to San Juan Luis Munoz Marin Intl per day. You should also have plenty of airline options to choose from since 7 airlines have flights from the Boston airport to San Juan Luis Munoz Marin Intl. It is only a 2.6 mi journey to Logan Intl (BOS) from Boston’s city center.
What is the cheapest airline to fly from Boston to San Juan Luis Munoz Marin Intl Airport round-trip?
Currently priced at $175, Spirit Airlines will fly you from Boston to San Juan Luis Munoz Marin Intl Airport and back. In addition to Spirit Airlines, many other airlines offer competitively priced options for your trip. This flight start at 34% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from Boston to San Juan Luis Munoz Marin Intl Airport one-way?
The cheapest airlines for a one-way flight from Boston to San Juan Luis Munoz Marin Intl Airport are Spirit Airlines ($96), Frontier ($114), and Delta ($123).
What are the most reliable airlines from Boston to San Juan Luis Munoz Marin Intl Airport?
Consider Delta (89%), Etihad Airways (84%) or EL AL (83%) when booking your flight. These represent the most reliable airlines when flying from Boston to San Juan Luis Munoz Marin Intl Airport.
What are the cheapest flights from Boston to San Juan Luis Munoz Marin Intl Airport?
While on average a flight from Boston to San Juan Luis Munoz Marin Intl Airport is generally $538, our data shows the cheapest flight currently is $108. When looking at the most popular route, (Boston Logan Intl - San Juan Luis Munoz Marin Intl), you can expect to pay $174 for that flight.
Can I find deals for flights from Boston to Luis Munoz Marin Intl that include hotel bookings?
Yes. In addition to deals on Boston to Luis Munoz Marin Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Boston to Luis Munoz Marin Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Luis Munoz Marin Intl.
Can I find deals for business class flights from Boston to Luis Munoz Marin Intl?
Yes. Cheapflights offers flight deals from Boston to Luis Munoz Marin Intl 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 Boston to San Juan Luis Munoz Marin Intl Airport?
Currently, September is the cheapest month in which you can book a flight from Boston to San Juan Luis Munoz Marin Intl Airport (average of $254). Flying from Boston to San Juan Luis Munoz Marin Intl Airport in June is currently the most expensive (average of $339). 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

Dorado

Fajardo

Luquillo

Rio Grande

Humacao

Bayamón

Browse thousands of different options on Cheapflights for your next trip

Top 7 airlines flying from Boston to Luis Munoz Marin Intl

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$76	Average$166	FlexibilityNo cancel fee	On-time62%
Spirit Airlines	Cheapest$96	Average$261	FlexibilityNo cancel fee	On-time65%
Delta	Cheapest$141	Average$327	FlexibilityNo cancel fee	On-timeN/A
JetBlue	Cheapest$148	Average$341	FlexibilityNo cancel fee	On-time62%
United Airlines	Cheapest$204	Average$519	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$288	Average$479	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$427	Average$677	FlexibilityNo cancel fee	On-time63%

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$96+ Cheap flights from Boston (BOS) to Luis Munoz Marin Intl (SJU)

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 8/31. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Boston to Luis Munoz Marin Intl with Cheapflights

1. Tell us where you want to go

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3. Compare prices and book

Cheapflights Tip: The best prices from Boston Logan Intl to San Juan Luis Munoz Marin Intl are usually found in September or August, booked 27 days in advance, depart on a Monday or Tuesday and return on a Friday

Cheap flight deals from Boston to Luis Munoz Marin Intl

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Boston to Luis Munoz Marin Intl

Cheapest flights from Boston to Luis Munoz Marin IntlExplore the most affordable flight options available from Boston to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 11, 2025.

Explore the most affordable flight options available from Boston to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 11, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Boston to San Juan Luis Munoz Marin Intl Airport that are best for you.

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

Cheapflights partnered with top experts to bring you the best recommendations for your Boston to San Juan Luis Munoz Marin Intl Airport trip

Airlines

Frontier

Spirit Airlines

Airports

BOS

SJU

Our travel experts

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

Have a flexible travel schedule? Discover the best time to fly to Luis Munoz Marin Intl from Boston with our price prediction graph.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from Boston to Luis Munoz Marin Intl. Price data was last updated on June 27, 2025.

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

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

Find hourly flight availability from Boston to Luis Munoz Marin Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated julio 11, 2025.

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

Use this chart to determine the cheapest time to fly round-trip from Boston to Luis Munoz Marin Intl. Price data was last updated on July 6, 2025.

Weekly flight availability from Boston to San Juan Luis Munoz Marin Intl Airport

Reviews of airlines servicing Luis Munoz Marin Intl

Peruse reviews from past customers who have flown with Southwest, Delta, and JetBlue from Boston to San Juan Luis Munoz Marin Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Boston to Luis Munoz Marin Intl. 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 from for flights from Boston to San Juan Luis Munoz Marin Intl?

What is the cheapest airline to fly from Boston to San Juan Luis Munoz Marin Intl Airport round-trip?

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

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

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

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

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

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

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

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Alternative routes for Boston to Luis Munoz Marin Intl

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Top 7 airlines flying from Boston to Luis Munoz Marin Intl

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Cheapest flights from Boston to Luis Munoz Marin Intl
Explore the most affordable flight options available from Boston to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 11, 2025.