How many flights depart from Boston to San Juan on average per week?

As of November 2025, there are 63 flights per week flying from Boston to San Juan. The most common day of the week flights depart is Wed, with 27% of flights taking off on this day.

How often are flights from Boston to San Juan delayed?

Historically, on average around 24% of flights between Boston and San Juan have experienced a delay on any given week. The average delay length over the past 12 months has been 144 minutes.

How many flights depart from Boston to San Juan on average per day?

The number of flights available between Boston and San Juan is 9 per day as of November 2025. The most frequent departure time is 8:00PM, with 32% of daily flights leaving in the evening.

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

Generally, flights departing in the morning tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

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

Wednesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.

What airlines fly to San Juan?

JetBlue, Delta and Frontier are the top three most popular airlines that fly to San Juan from Boston according to our data. JetBlue is the first choice among our users, with 52% of people opting to fly with this airline when traveling to San Juan. Keep in mind that there are 7 different airlines that fly to San Juan on a routine basis, so you have a few additional options to choose from.

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

According to our data, Delta have had the least number of delays on this route over the last 12 months; with about 17% of their flights experiencing any sort of delay.

What is the cheapest airline that flies from Boston Logan Intl to San Juan?

Frontier, JetBlue, and United Airlines are the most popular carriers operating from Boston Logan Intl to San Juan

When did momondo last update prices for flights from Boston Logan Intl Airport to San Juan?

Prices for flights from Boston Logan Intl Airport to San Juan were last updated today.

How many operators does momondo search for flights from Boston Logan Intl Airport to San Juan?

There are 7 operators available for flights from Boston Logan Intl Airport to San Juan as of November 2025.

How old do you have to be to fly from Boston Logan Intl Airport to San Juan?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Boston Logan Intl Airport to San Juan.

What documentation or ID do you need to fly to San Juan?

The travel and health documents required for your trip to San Juan can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Juan. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$98 Cheap Flights from Boston to San Juan in 2025/26

Q: What is the typical price of a round-trip flight between Boston and San Juan?

Prices are currently low for flights on this route. Typical prices usually range from $261 to $575. The lowest price recently found on this route was $181.

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10:52 am - 12:49 amBOS-SJU

36h 57m2 stops

8:00 am - 11:23 amSJU-BOS

4h 23mnonstop

$181Frontier

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Fri, Dec 12 - Thu, Dec 18

7:34 pm - 12:41 amBOS-SJU

4h 07mnonstop

3:55 am - 10:46 amSJU-BOS

7h 51m1 stop

$182Multiple Airlines

Find Deal

Wed, Jan 7 - Sun, Jan 11

3:18 pm - 8:24 pmBOS-SJU

4h 06mnonstop

10:52 am - 2:12 pmSJU-BOS

4h 20mnonstop

$183Spirit Airlines

Find Deal

Fri, Jan 9 - Fri, Jan 16

6:55 pm - 11:54 pmBOS-SJU

3h 59mnonstop

6:10 am - 9:19 amSJU-BOS

4h 09mnonstop

$184JetBlue

Find Deal

Tue, Dec 2 - Wed, Dec 10

6:00 am - 3:06 pmBOS-SJU

8h 06m1 stop

11:05 am - 10:11 amSJU-BOS

24h 06m1 stop

$185Frontier

Find Deal

Tue, Feb 10 - Thu, Feb 12

6:55 pm - 11:54 pmBOS-SJU

3h 59mnonstop

1:41 pm - 4:54 pmSJU-BOS

4h 13mnonstop

$186JetBlue

Find Deal

Wed, Dec 10 - Fri, Dec 12

3:18 pm - 8:24 pmBOS-SJU

4h 06mnonstop

6:00 am - 2:38 pmSJU-BOS

9h 38m1 stop

$187Spirit Airlines

Find Deal

Mon, Feb 2 - Tue, Feb 3

3:43 pm - 11:32 pmBOS-SJU

6h 49m1 stop

4:22 pm - 1:13 amSJU-BOS

9h 51m1 stop

$188Multiple Airlines

Find Deal

Wed, Jan 28 - Mon, Feb 9

3:43 pm - 11:32 pmBOS-SJU

6h 49m1 stop

6:11 pm - 1:13 amSJU-BOS

8h 02m1 stop

$189Multiple Airlines

Find Deal

Sat, Jan 17 - Sat, Jan 24

3:43 pm - 9:47 amBOS-SJU

17h 04m1 stop

3:55 am - 10:46 amSJU-BOS

7h 51m1 stop

$190Multiple Airlines

Find Deal

Fri, Jan 9 - Sun, Jan 11

Frontier flights from Boston to San Juan

Our best Frontier deals on Boston to San Juan flight tickets

Frontier

Dec 12

BOS10:52 amBoston Logan Intl

36h 57m

2 stops

SJU12:49 amSan Juan Luis Munoz Marin Intl

Dec 18

SJU8:00 amSan Juan Luis Munoz Marin Intl

4h 23m

BOS11:23 amBoston Logan Intl

$181

Find similar

Frontier

Feb 10

BOS6:00 amBoston Logan Intl

8h 06m

1 stop

SJU3:06 pmSan Juan Luis Munoz Marin Intl

Feb 12

SJU11:05 amSan Juan Luis Munoz Marin Intl

24h 06m

1 stop

BOS10:11 amBoston Logan Intl

$185

Find similar

Frontier

Feb 26

BOS10:24 amBoston Logan Intl

4h 04m

SJU3:28 pmSan Juan Luis Munoz Marin Intl

Mar 4

SJU4:11 pmSan Juan Luis Munoz Marin Intl

8h 54m

1 stop

BOS12:05 amBoston Logan Intl

$187

Find similar

Spirit Airlines flights from Boston to San Juan

Our best Spirit Airlines deals on Boston to San Juan flight tickets

Spirit Airlines

Jan 9

BOS3:18 pmBoston Logan Intl

4h 06m

SJU8:24 pmSan Juan Luis Munoz Marin Intl

Jan 16

SJU10:52 amSan Juan Luis Munoz Marin Intl

4h 20m

BOS2:12 pmBoston Logan Intl

$183

Find similar

Spirit Airlines

Dec 6

BOS10:56 amBoston Logan Intl

12h 20m

1 stop

SJU12:16 amSan Juan Luis Munoz Marin Intl

Dec 8

SJU6:14 pmSan Juan Luis Munoz Marin Intl

6h 42m

1 stop

BOS11:56 pmBoston Logan Intl

$192

Find similar

Spirit Airlines

Jan 17

BOS3:43 pmBoston Logan Intl

17h 04m

1 stop

SJU9:47 amSan Juan Luis Munoz Marin Intl

Jan 20

SJU6:00 amSan Juan Luis Munoz Marin Intl

9h 38m

1 stop

BOS2:38 pmBoston Logan Intl

$196

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

Fri 12/12

10:52 am-12:49 am

2 stops36h 57m

San Juan Luis Munoz Marin Intl

Thu 12/18

8:00 am-11:23 am

Nonstop4h 23m

$181

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

Wed 1/7

7:34 pm-12:41 am

Nonstop4h 07m

San Juan Luis Munoz Marin Intl

Sun 1/11

3:55 am-10:46 am

1 stop7h 51m

$182

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

Fri 1/9

3:18 pm-8:24 pm

Nonstop4h 06m

San Juan Luis Munoz Marin Intl

Fri 1/16

10:52 am-2:12 pm

Nonstop4h 20m

$183

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

Tue 12/2

6:55 pm-11:54 pm

Nonstop3h 59m

San Juan Luis Munoz Marin Intl

Wed 12/10

6:10 am-9:19 am

Nonstop4h 09m

$184

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

Tue 2/10

6:00 am-3:06 pm

1 stop8h 06m

San Juan Luis Munoz Marin Intl

Thu 2/12

11:05 am-10:11 am

1 stop24h 06m

$185

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

Wed 12/10

6:55 pm-11:54 pm

Nonstop3h 59m

San Juan Luis Munoz Marin Intl

Fri 12/12

1:41 pm-4:54 pm

Nonstop4h 13m

$186

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

Mon 2/2

3:18 pm-8:24 pm

Nonstop4h 06m

San Juan Luis Munoz Marin Intl

Tue 2/3

6:00 am-2:38 pm

1 stop9h 38m

$187

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

Wed 1/28

3:43 pm-11:32 pm

1 stop6h 49m

San Juan Luis Munoz Marin Intl

Mon 2/9

4:22 pm-1:13 am

1 stop9h 51m

$188

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

Sat 1/17

3:43 pm-11:32 pm

1 stop6h 49m

San Juan Luis Munoz Marin Intl

Sat 1/24

6:11 pm-1:13 am

1 stop8h 02m

$189

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

Fri 1/9

3:43 pm-9:47 am

1 stop17h 04m

San Juan Luis Munoz Marin Intl

Sun 1/11

3:55 am-10:46 am

1 stop7h 51m

$190

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How to get the cheapest flight ticket from Boston to San Juan

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Delays

Other information

What is the typical price of a round-trip flight between Boston and San Juan?

What is the cheapest month to fly to San Juan?

If you’re not able to fly to San Juan in January, then March is your next best option. Flight prices from Boston to San Juan during March average around $264.

What is the cheapest day to depart on your flight to San Juan?

The cheapest day to depart from Boston to San Juan is on a Monday when prices can be found for as low as $296. The most expensive day to fly to San Juan is Friday, with ticket prices averaging around $338.

What is the cheapest time of day to depart on your flight to San Juan?

The cheapest time of day to fly to San Juan is in the morning when flights can be purchased for as low as $313. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $348 on average. Flights to San Juan from Boston at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Boston Logan Intl to San Juan flight route?

Fly from Boston Logan Intl to San Juan Luis Munoz Marin Intl for the best Boston Logan Intl - San Juan flight prices

How far in advance should I book a flight to San Juan?

You are more likely to see cheaper flights to San Juan from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to San Juan for around $300 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Juan from Boston for as low as $256 on momondo.

What cabin class options are available on Boston Logan Intl to San Juan flights?

There are 4 cabin classes available to choose from on Boston Logan Intl to San Juan flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap Boston to San Juan flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to San Juan

Fastest flight time	3h 57m
Direct flights	Every day
Airports in San Juan	1 airport

The fastest flight from Boston to San Juan takes 3h 57m

Direct flights go from Boston to San Juan every day.

There is 1 airport near San Juan: San Juan Luis Munoz Marin Intl (SJU)

Search flight deals

How far is Boston Logan Intl to San Juan by plane?
San Juan is 1675.2 mi away from Boston Logan Intl. By plane, this route typically takes 3h 59m.
When did momondo last update prices for flights from Boston Logan Intl Airport to San Juan?
Prices for flights from Boston Logan Intl Airport to San Juan were last updated today.
How many operators does momondo search for flights from Boston Logan Intl Airport to San Juan?
There are 7 operators available for flights from Boston Logan Intl Airport to San Juan as of November 2025.
How old do you have to be to fly from Boston Logan Intl Airport to San Juan?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Boston Logan Intl Airport to San Juan.
What documentation or ID do you need to fly to San Juan?
The travel and health documents required for your trip to San Juan can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Juan. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Boston to San Juan

Compare and see reviews for airlines that fly from Boston to San Juan with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $87	Free Cancellation	Rating 5.8 3,099 reviews	Search Frontier flights
Spirit Airlines	PriceFrom $99	Free Cancellation	Rating 6.3 8,158 reviews	Search Spirit Airlines flights
Delta	PriceFrom $146	Free Cancellation	Rating 7.9 7,998 reviews	Search Delta flights
JetBlue	PriceFrom $175	Free Cancellation	Rating 7.2 2,905 reviews	Search JetBlue flights
United Airlines	PriceFrom $190	Free Cancellation	Rating 7.4 9,046 reviews	Search United Airlines flights
American Airlines	PriceFrom $288	Free Cancellation	Rating 7.2 11,038 reviews	Search American Airlines flights
Southwest	PriceFrom $383	Free Cancellation	Rating 8.0 4,254 reviews	Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Boston to San Juan?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Boston to San Juan. momondo saves you time and could save you money on your trip.

Can I find flights from Boston to San Juan with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Boston to San Juan flights to just show those with flexible booking policies.

How can momondo help me find flights from Boston to San Juan?

Once all potential Boston to San Juan flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Boston to San Juan right now. Can momondo alert me if prices change?

Price alerts on flights to San Juan from Boston are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your San Juan trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Find better results for your trip to Puerto Rico

Fly into one of these airports located in San Juan

San Juan Isla Grande Airport

San Juan Luis Munoz Marin Intl Airport

Fly to other destinations from Boston

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Flights from Boston Logan Intl to Philadelphia

Flights from Boston Logan Intl to Detroit Metropolitan Wayne County

Cheap flights from Boston to San Juan from $108

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to San Juan departing on 12/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Frontier flights from Boston to San Juan

Our best Frontier deals on Boston to San Juan flight tickets

Spirit Airlines flights from Boston to San Juan

Our best Spirit Airlines deals on Boston to San Juan flight tickets

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How to get the cheapest flight ticket from Boston to San Juan

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Boston and San Juan?

What is the cheapest month to fly to San Juan?

If you’re not able to fly to San Juan in January, then March is your next best option. Flight prices from Boston to San Juan during March average around $264.

What is the cheapest day to depart on your flight to San Juan?

The cheapest day to depart from Boston to San Juan is on a Monday when prices can be found for as low as $296. The most expensive day to fly to San Juan is Friday, with ticket prices averaging around $338.

What is the cheapest time of day to depart on your flight to San Juan?

What is the cheapest Boston Logan Intl to San Juan flight route?

Fly from Boston Logan Intl to San Juan Luis Munoz Marin Intl for the best Boston Logan Intl - San Juan flight prices

How far in advance should I book a flight to San Juan?

What cabin class options are available on Boston Logan Intl to San Juan flights?

There are 4 cabin classes available to choose from on Boston Logan Intl to San Juan flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

What is the cheapest airline that flies from Boston Logan Intl to San Juan?

Frontier, JetBlue, and United Airlines are the most popular carriers operating from Boston Logan Intl to San Juan

What airlines fly to San Juan?

How often are flights from Boston to San Juan delayed?

Historically, on average around 24% of flights between Boston and San Juan have experienced a delay on any given week. The average delay length over the past 12 months has been 144 minutes.

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

Generally, flights departing in the morning tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

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

Wednesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.

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

According to our data, Delta have had the least number of delays on this route over the last 12 months; with about 17% of their flights experiencing any sort of delay.

How many flights depart from Boston to San Juan on average per day?

The number of flights available between Boston and San Juan is 9 per day as of November 2025. The most frequent departure time is 8:00PM, with 32% of daily flights leaving in the evening.

How many flights depart from Boston to San Juan on average per week?

As of November 2025, there are 63 flights per week flying from Boston to San Juan. The most common day of the week flights depart is Wed, with 27% of flights taking off on this day.

Cheap Boston to San Juan flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to San Juan

Fastest flight time

Direct flights

Airports in San Juan

How far is Boston Logan Intl to San Juan by plane?

When did momondo last update prices for flights from Boston Logan Intl Airport to San Juan?

How many operators does momondo search for flights from Boston Logan Intl Airport to San Juan?

How old do you have to be to fly from Boston Logan Intl Airport to San Juan?

What documentation or ID do you need to fly to San Juan?

Best airlines flying from Boston to San Juan

Compare and see reviews for airlines that fly from Boston to San Juan with momondo

Why use momondo?

Why should I use momondo to find a flight deal from Boston to San Juan?

Can I find flights from Boston to San Juan with flexible booking policies on momondo?

How can momondo help me find flights from Boston to San Juan?

I’m not ready to book a flight from Boston to San Juan right now. Can momondo alert me if prices change?

An easier way to manage your San Juan trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Puerto Rico

Fly into one of these airports located in San Juan

Airports listed have a maximum distance of 7.1 mi from San Juan