What is the most punctual flight time for Boston to San Juan flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Boston to San Juan flights?

Over the past year, Delta have had the lowest number of delays on this route, with just 19% of flights being delayed.

How often are flights from Boston to San Juan delayed?

About 27% of weekly flights between Boston and San Juan have experienced delays in the past year, with the average delay time being 156 minutes.

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

Departing from Boston to San Juan Luis Munoz Marin Intl Airport will take you 4h 07m. Airlines will cover a distance of 1678 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

The most flights from BOS to SJU are scheduled on a Sunday (11 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).

In terms of precipitation, rainfall in San Juan Luis Munoz Marin Intl Airport ranges from 55.0 - 156.0 inches per month. November is typically the wettest month, when rainfall can reach 156.0 mm. March is typically the driest time to visit San Juan Luis Munoz Marin Intl Airport when rainfall is around 55.0 mm.

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 28.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 25.0 C).

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

Most people fly from Boston Logan Intl (BOS) if they book a flight from Boston to San Juan Luis Munoz Marin Intl. On average, Logan Intl has 7 outbound flights to San Juan Luis Munoz Marin Intl per day from 0 airlines. Boston Logan Intl is conveniently located just 2.6 mi 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 holiday 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.

£125+ Cheap Flights from Boston to San Juan Luis Munoz Marin Intl Airport

Cheap flight deals from Boston to Luis Munoz Marin Intl

Enter your travel dates to find the best prices.

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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 10 November 2026.

Wed 2/1206:00 -

1 stop7h 40m

Wed 2/1202:05 -

1 stop6h 33m

Deal found 6/11£227

Sat 5/1214:36 -

1 stop6h 46m

Tue 8/1213:00 -

2 stops11h 59m

Deal found 5/11£231

Sat 21/1111:06 -

1 stop11h 12m

Wed 25/1103:55 -

1 stop7h 16m

Deal found 5/11£235

Wed 30/1217:00 -

1 stop6h 36m

Thu 28/102:05 -

1 stop8h 07m

Deal found 6/11£239

Wed 2/1207:15 -

1 stop6h 25m

Thu 10/1214:52 -

2 stops10h 07m

Deal found 6/11£241

Sun 22/1115:41 -

1 stop7h 55m

Wed 25/1102:05 -

1 stop8h 12m

Deal found 5/11£243

Thu 31/1215:31 -

1 stop8h 05m

Fri 8/102:05 -

1 stop8h 39m

Deal found 5/11£248

Tue 8/1213:20 -

1 stop9h 05m

Wed 9/1206:40 -

1 stop6h 40m

Deal found 8/11£253

Sun 13/1215:42 -

1 stop7h 54m

Fri 18/1214:52 -

2 stops10h 07m

Deal found 5/11£254

Tue 8/1210:35 -

2 stops10h 50m

Tue 15/1212:30 -

2 stops10h 25m

Deal found 6/11£257

Find flight deals from Boston to Luis Munoz Marin Intl

Round-trip from	£227
One-way from	£125
Popular in	July
Cheapest in	January
Average price	£316
Good round-trip deal	£339 or less
Good one-way deal	£172 or less

United Airlines
2/12-2/12
2 total stops
14h 13m total
Boston to San Juan

Search Deals

JetBlue
13/1-31/12
1 total stop
8h 07m total
Boston to San Juan

Search Deals

Highest demand for flights based on searches. 12% potential increase in price (£30 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£6 potential savings vs. average return price).

Search Deals

Average for round-trip flights in November 2026

Search Deals

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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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

Cheapest return flight

BostonSan Juan

BOS Boston Logan Intl - SJU San Juan Luis Munoz Marin Intl

BOSSJU

Boston Logan Intl

Tue 15/12

06:00-14:54

1 stop7h 54m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

£125

BostonSan Juan

BOS Boston Logan Intl - SJU San Juan Luis Munoz Marin Intl

BOSSJU

Boston Logan Intl

Thu 31/12

15:45-01:34

1 stop8h 49m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

£138

BostonSan Juan

BOS Boston Logan Intl - SJU San Juan Luis Munoz Marin Intl

BOSSJU

Boston Logan Intl

Wed 9/12

14:25-00:50

2 stops9h 25m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

£141

BostonSan Juan

BOS Boston Logan Intl - SJU San Juan Luis Munoz Marin Intl

BOSSJU

Boston Logan Intl

Mon 14/12

09:15-00:36

2 stops14h 21m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

£153

BostonSan Juan

BOS Boston Logan Intl - SJU San Juan Luis Munoz Marin Intl

BOSSJU

Boston Logan Intl

Thu 31/12

07:15-12:22

Nonstop4h 07m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

£160

Fastest return journey

BostonSan Juan

BOS Boston Logan Intl - SJU San Juan Luis Munoz Marin Intl

BOSSJU

Boston Logan Intl

Mon 7/12

14:21-19:27

Nonstop4h 06m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

£160

BostonSan Juan

BOS Boston Logan Intl - SJU San Juan Luis Munoz Marin Intl

BOSSJU

Boston Logan Intl

Fri 4/12

11:20-22:25

2 stops10h 05m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

£166

BostonSan Juan

BOS Boston Logan Intl - SJU San Juan Luis Munoz Marin Intl

BOSSJU

Boston Logan Intl

Sun 20/12

07:15-12:22

Nonstop4h 07m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

£183

BostonSan Juan

BOS Boston Logan Intl - SJU San Juan Luis Munoz Marin Intl

BOSSJU

Boston Logan Intl

Fri 11/12

08:42-13:50

Nonstop4h 08m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

£189

BostonSan Juan

BOS Boston Logan Intl - SJU San Juan Luis Munoz Marin Intl

BOSSJU

Boston Logan Intl

Wed 16/12

10:35-21:55

2 stops10h 20m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

£201

Flights are sorted by cheapest return flights first.

Deals found on 8/11

Showing 1-10 of 22 resultsSorted by cheapest first

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.

BOS-SJU

Estimated return 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

Prices

Airlines

Delays

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

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 46 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, January is the cheapest month in which you can book a flight from Boston to San Juan Luis Munoz Marin Intl Airport (average of £228). Flying from Boston to San Juan Luis Munoz Marin Intl Airport in July is currently the most expensive (average of £345). 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?

It’s optimal to fly from Boston to San Juan Luis Munoz Marin Intl Airport in the evening. By choosing this option you can save up to 46% on the cost of your flight, compared to a flight in the afternoon.

How much does it cost for a return flight from Boston to San Juan Luis Munoz Marin Intl Airport?

Airfare is below average for this route at the moment.

Boston to San Juan Luis Munoz Marin Intl Airport flights typically cost between £249 and £413 in December.
The cheapest return price found within the last 5 days was £227 on United Airlines (2 Dec–2 Dec).

Related info for your journey

What airport do you fly from for flights from Boston to San Juan Luis Munoz Marin Intl?
Most people fly from Boston Logan Intl (BOS) if they book a flight from Boston to San Juan Luis Munoz Marin Intl. On average, Logan Intl has 7 outbound flights to San Juan Luis Munoz Marin Intl per day from 0 airlines. Boston Logan Intl is conveniently located just 2.6 mi from Boston’s city center.
How long is the flight from Boston to San Juan Luis Munoz Marin Intl Airport?
Departing from Boston to San Juan Luis Munoz Marin Intl Airport will take you 4h 07m. Airlines will cover a distance of 1678 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the most reliable airlines from Boston to San Juan Luis Munoz Marin Intl Airport?
The top 3 most reliable airlines when flying from Boston to San Juan Luis Munoz Marin Intl Airport are Japan Airlines (100%), Icelandair (96%) and JetBlue (87%).
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 holiday 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, January is the cheapest month in which you can book a flight from Boston to San Juan Luis Munoz Marin Intl Airport (average of £228). Flying from Boston to San Juan Luis Munoz Marin Intl Airport in July is currently the most expensive (average of £345). 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.

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

When you search for this flight from Boston to Luis Munoz Marin Intl, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

Cheapflights simply makes it quick and affordable to book flights from Boston to Luis Munoz Marin Intl by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Luis Munoz Marin Intl from Boston today and book when prices fit your budget.

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Cheap flights from Boston to San Juan Luis Munoz Marin Intl Airport from £125

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 13/1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap 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 10 November 2026.

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 10 November 2026.

Best flights from Boston to Luis Munoz Marin IntlDiscover carefully curated flight deals from Boston to Luis Munoz Marin Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 10 November 2026.

Discover carefully curated flight deals from Boston to Luis Munoz Marin Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 10 November 2026.

Direct flights from Boston to Luis Munoz Marin IntlExplore direct flight options from Boston to Luis Munoz Marin Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 10 November 2026.

Explore direct flight options from Boston to Luis Munoz Marin Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 10 November 2026.

Last-minute flights from Boston to Luis Munoz Marin IntlDiscover last-minute flight deals from Boston to Luis Munoz Marin Intl. Data last updated 10 November 2026 and is based on user searches.

Discover last-minute flight deals from Boston to Luis Munoz Marin Intl. Data last updated 10 November 2026 and is based on user searches.

One-way flights from Boston to Luis Munoz Marin IntlSearch for one-way flight options from Boston to Luis Munoz Marin Intl. Find affordable one-way fares based on user searches. Data last updated 10 November 2026.

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 10 November 2026.

Find flight deals from Boston to Luis Munoz Marin Intl

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

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

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

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?

It’s optimal to fly from Boston to San Juan Luis Munoz Marin Intl Airport in the evening. By choosing this option you can save up to 46% on the cost of your flight, compared to a flight in the afternoon.

How much does it cost for a return flight from Boston to San Juan Luis Munoz Marin Intl Airport?

Airfare is below average for this route at the moment.

Boston to San Juan Luis Munoz Marin Intl Airport flights typically cost between £249 and £413 in December.The cheapest return price found within the last 5 days was £227 on United Airlines (2 Dec–2 Dec).

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

The most flights from BOS to SJU are scheduled on a Sunday (11 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).

How often are flights from Boston to San Juan delayed?

About 27% of weekly flights between Boston and San Juan have experienced delays in the past year, with the average delay time being 156 minutes.

What is the most punctual flight time for Boston to San Juan flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Boston to San Juan flights?

Over the past year, Delta have had the lowest number of delays on this route, with just 19% of flights being delayed.

Related info for your journey

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

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

What are the most reliable airlines 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?

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

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Search flights from Boston to Luis Munoz Marin Intl by cabin class

Find flights from Boston to Luis Munoz Marin Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Other flights to Luis Munoz Marin Intl

Explore flights to Luis Munoz Marin Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 10 November 2026.

Boston and Luis Munoz Marin Intl flights

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

Can Cheapflights 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?

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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 10 November 2026.

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 stopovers in mind to ensure you get the best travel experience. Data last updated 10 November 2026.

Direct flights from Boston to Luis Munoz Marin Intl
Explore direct flight options from Boston to Luis Munoz Marin Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 10 November 2026.

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 10 November 2026 and is based on user searches.

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 10 November 2026.

Boston to San Juan Luis Munoz Marin Intl Airport flights typically cost between £249 and £413 in December.
The cheapest return price found within the last 5 days was £227 on United Airlines (2 Dec–2 Dec).