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Cheap flights from Boston to San Juan Luis Munoz Marin Intl Airport

BOS — SJU
11 Oct — 18 Oct1
1 adult
1 adult, Economy

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

Cheap flight deals from Boston to Luis Munoz Marin Intl

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Luis Munoz Marin Intl (SJU). 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 11 September 2025.

Popular in

December

Cheapest in

September

Average price

C$ 284

Good round-trip deal

C$ 358 or less

Good one-way deal

C$ 252 or less
Highest demand for flights based on searches. 2% potential increase in price (C$ 15 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease (C$ 18 potential savings vs. average RT price).
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Average for round-trip flights in September 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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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?

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 29 August 2025.

To ensure you get the cheapest price possible for a flight from Boston to San Juan Luis Munoz Marin Intl Airport, you should look to book at least 27 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, April is the cheapest month in which you can book a flight from Boston to San Juan Luis Munoz Marin Intl Airport (average of C$ 254). Flying from Boston to San Juan Luis Munoz Marin Intl Airport in July is currently the most expensive (average of C$ 580). 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?

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 11 September 2025.

It’s typically best to fly out from Boston to San Juan Luis Munoz Marin Intl Airport in the morning. Doing so could potentially save you 39% on the flight price compared to flying in the afternoon, which is usually more expensive.

Reviews of airlines servicing Luis Munoz Marin Intl

Get insights into the airlines that provide service to Luis Munoz Marin Intl. 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 Luis Munoz Marin Intl. Reviews last updated 11 September 2025.
Get a feel of what it's like to fly with Delta,JetBlue, andSpirit Airlines from Boston to San Juan Luis Munoz Marin Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,960 reviews
Check prices

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews
Check prices

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
JetBlue
7.2
Good
2,913 reviews
Delta
8.0
Very good
7,960 reviews
Check prices

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Spirit Airlines
6.3
Okay
8,023 reviews
Delta
8.0
Very good
7,960 reviews
Check prices

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Frontier
5.8
Fair
3,177 reviews
Delta
8.0
Very good
7,960 reviews
Check prices

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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?

    Boston Logan Intl (BOS), located 4.2 km from the city centre, is the airport you fly out of when you book flights from Boston to San Juan Luis Munoz Marin Intl. 4 airlines have flights from Logan Intl to San Juan Luis Munoz Marin Intl on a regular basis. Booking flights from Boston Logan Intl to San Juan Luis Munoz Marin Intl should not be difficult; the airport handles an average of 4 outbound flights to San Juan Luis Munoz Marin Intl per day.

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

    Flying on Frontier is currently your cheapest option to San Juan Luis Munoz Marin Intl Airport, with prices starting at C$ 100. Additional round-trip tickets that might be worth considering are offered by Delta and Spirit Airlines, with the lowest prices starting at C$ 143 and C$ 167, respectively. These flights start at 74% lower than the current average price 3 months from now.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Boston to San Juan Luis Munoz Marin Intl Airport on time: Delta (92%), EL AL (79%), TAP AIR PORTUGAL (76%).

  • 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, April is the cheapest month in which you can book a flight from Boston to San Juan Luis Munoz Marin Intl Airport (average of C$ 254). Flying from Boston to San Juan Luis Munoz Marin Intl Airport in July is currently the most expensive (average of C$ 580). 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

Travelling to a place near San Juan Luis Munoz Marin Intl Airport?

Book flights to San Juan Luis Munoz Marin Intl Airport if you plan to visit one of these locations
Luquillo

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Top 4 airlines flying from Boston to Luis Munoz Marin Intl

Discover the top 4 airlines that operate flights from Boston to Luis Munoz Marin Intl. 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 629,999 searches. Data last updated 11 September 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapestC$ 100AverageC$ 204FlexibilityNo cancel feeOn-time62%
Search Frontier flights
DeltaCheapestC$ 143AverageC$ 394FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Spirit AirlinesCheapestC$ 167AverageC$ 244FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
JetBlueCheapestC$ 169AverageC$ 387FlexibilityNo cancel feeOn-time62%
Search JetBlue flights

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How does Cheapflights help users find flights from Boston to Luis Munoz Marin Intl?

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Why should you use Cheapflights to find cheap flight tickets from Boston to Luis Munoz Marin Intl?

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Can Cheapflights find flights from Boston to Luis Munoz Marin Intl with no change fees?

Yes! Cheapflights helps users easily find flights from Boston to Luis Munoz Marin Intl with no change fees.

Can Cheapflights notify me if prices for flights from Boston to Luis Munoz Marin Intl become cheaper?

Not ready to book yet? You can track prices for flights from Boston to Luis Munoz Marin Intl on Cheapflights with our Price Alert feature and get notified when better prices are available.

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