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 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.

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.

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 02m. 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 Monday (8 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (2 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 5 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.

£127+ 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 27 September 2026.

Tue 1/1214:21 -

Nonstop4h 06m

Tue 8/1207:00 -

Nonstop4h 14m

Deal found 25/9£247

Wed 21/1011:10 -

Nonstop4h 04m

Wed 28/1006:00 -

Nonstop4h 13m

Deal found 26/9£248

Sat 24/1009:46 -

1 stop6h 39m

Tue 27/1019:40 -

Nonstop4h 18m

Deal found 23/9£249

Tue 20/1008:50 -

Nonstop4h 02m

Thu 29/1006:45 -

1 stop8h 04m

Deal found 25/9£251

Tue 1/1208:15 -

Nonstop4h 09m

Mon 7/1213:55 -

1 stop6h 55m

Deal found 25/9£251

Sat 17/1019:42 -

Nonstop4h 07m

Fri 23/1015:00 -

1 stop8h 59m

Deal found 26/9£252

Sat 24/1005:39 -

1 stop7h 21m

Sat 31/1006:45 -

1 stop8h 04m

Deal found 24/9£254

Wed 9/1218:30 -

1 stop6h 22m

Sat 12/1207:00 -

Nonstop4h 14m

Deal found 23/9£254

Sat 31/1013:00 -

1 stop6h 42m

Fri 6/1111:20 -

1 stop9h 21m

Deal found 25/9£255

Wed 21/1008:50 -

Nonstop4h 02m

Thu 29/1013:15 -

1 stop9h 50m

Deal found 25/9£258

Sat 5/1213:37 -

1 stop9h 21m

Tue 15/1214:11 -

1 stop9h 47m

Deal found 23/9£261

Thu 3/1208:35 -

Nonstop4h 07m

Mon 7/1214:53 -

Nonstop4h 22m

Deal found 25/9£262

Find flight deals from Boston to Luis Munoz Marin Intl

Round-trip from	£247
One-way from	£127
Popular in	July
Cheapest in	January
Average price	£244
Good round-trip deal	£344 or less

JetBlue
14/11-20/11
Nonstop
8h 17m total
Boston to San Juan

Search Deals

Southwest
16/11-31/12
1 total stop
9h 05m total
Boston to San Juan

Search Deals

Highest demand for flights based on searches. 15% potential increase in price (£38 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 September 2026

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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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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.

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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

Thu 12/11

09:43-21:24

1 stop10h 41m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

£134

BostonSan Juan

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

BOSSJU

Boston Logan Intl

Tue 10/11

07:31-21:00

2 stops12h 29m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

£134

Fastest return journey

BostonSan Juan

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

BOSSJU

Boston Logan Intl

Wed 4/11

20:08-01:13

Nonstop4h 05m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

£146

BostonSan Juan

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

BOSSJU

Boston Logan Intl

Wed 4/11

10:30-22:22

2 stops10h 52m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

£151

BostonSan Juan

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

BOSSJU

Boston Logan Intl

Sun 11/10

05:35-12:20

1 stop6h 45m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

£157

BostonSan Juan

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

BOSSJU

Boston Logan Intl

Mon 11/1

06:00-14:40

1 stop7h 40m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

£158

BostonSan Juan

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

BOSSJU

Boston Logan Intl

Tue 12/1

09:12-22:22

2 stops12h 10m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

£158

BostonSan Juan

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

BOSSJU

Boston Logan Intl

Tue 15/12

07:00-12:08

Nonstop4h 08m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

£162

BostonSan Juan

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

BOSSJU

Boston Logan Intl

Sun 29/11

07:00-12:08

Nonstop4h 08m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

£162

BostonSan Juan

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

BOSSJU

Boston Logan Intl

Wed 7/10

07:38-13:45

1 stop6h 07m

San Juan Luis Munoz Marin Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

£165

Flights are sorted by cheapest return flights first.

Deals found on 23/9

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

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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 £211). Flying from Boston to San Juan Luis Munoz Marin Intl Airport in July is currently the most expensive (average of £350). 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 typical for this route at the moment.

Boston to San Juan Luis Munoz Marin Intl Airport flights typically cost between £198 and £287 in December.
The cheapest return price found within the last 5 days was £247 on JetBlue (1 Dec–7 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 5 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 02m. 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 EL AL (94%), Delta (85%) and TAP AIR PORTUGAL (70%).
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 £211). Flying from Boston to San Juan Luis Munoz Marin Intl Airport in July is currently the most expensive (average of £350). 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 £127

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 16/11. 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 27 September 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 27 September 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 27 September 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 27 September 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 27 September 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 27 September 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 27 September 2026 and is based on user searches.

Discover last-minute flight deals from Boston to Luis Munoz Marin Intl. Data last updated 27 September 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 27 September 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 27 September 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 typical for this route at the moment.

Boston to San Juan Luis Munoz Marin Intl Airport flights typically cost between £198 and £287 in December.The cheapest return price found within the last 5 days was £247 on JetBlue (1 Dec–7 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 Monday (8 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (2 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 27 September 2026.

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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 27 September 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 27 September 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 27 September 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 27 September 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 27 September 2026.

Boston to San Juan Luis Munoz Marin Intl Airport flights typically cost between £198 and £287 in December.
The cheapest return price found within the last 5 days was £247 on JetBlue (1 Dec–7 Dec).