Cheap flights from Boston to San Juan from $94

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 1/19. 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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Spirit Airlines Logo
7:34 pm - 12:41 am
BOS
-
SJU
4h 07mnonstop
Spirit Airlines Logo
10:52 am - 2:12 pm
SJU
-
BOS
4h 20mnonstop
$150Spirit Airlines
jue., ene. 1 - sáb., ene. 17
Frontier Logo
10:35 am - 2:45 pm
BOS
-
SJU
4h 10mnonstop
Frontier Logo
6:00 am - 10:35 am
SJU
-
BOS
4h 35mnonstop
$151Frontier
dom., abr. 5 - sáb., abr. 11
Spirit Airlines Logo
3:43 pm - 11:33 pm
BOS
-
SJU
6h 50m1 stop
Spirit Airlines Logo
11:22 am - 2:43 pm
SJU
-
BOS
4h 21mnonstop
$152Spirit Airlines
vie., ene. 30 - vie., feb. 13
Multiple Airlines Logo
3:00 pm - 8:06 pm
BOS
-
SJU
4h 06mnonstop
Multiple Airlines Logo
4:11 pm - 1:13 am
SJU
-
BOS
10h 02m1 stop
$154Multiple Airlines
jue., feb. 19 - mar., feb. 24
Multiple Airlines Logo
3:00 pm - 8:06 pm
BOS
-
SJU
4h 06mnonstop
Multiple Airlines Logo
5:25 pm - 9:06 am
SJU
-
BOS
16h 41m1 stop
$155Multiple Airlines
jue., feb. 19 - mié., feb. 25
Spirit Airlines Logo
3:43 pm - 9:47 am
BOS
-
SJU
17h 04m1 stop
Spirit Airlines Logo
10:52 am - 2:12 pm
SJU
-
BOS
4h 20mnonstop
$156Spirit Airlines
dom., feb. 1 - vie., feb. 6
Spirit Airlines Logo
3:43 pm - 9:47 am
BOS
-
SJU
17h 04m1 stop
Spirit Airlines Logo
6:00 am - 2:38 pm
SJU
-
BOS
9h 38m1 stop
$157Spirit Airlines
mar., ene. 20 - mar., ene. 27
Multiple Airlines Logo
12:31 pm - 5:30 pm
BOS
-
SJU
3h 59mnonstop
Multiple Airlines Logo
6:00 am - 2:38 pm
SJU
-
BOS
9h 38m1 stop
$158Multiple Airlines
mar., ene. 6 - jue., ene. 22
Spirit Airlines Logo
3:43 pm - 11:33 pm
BOS
-
SJU
6h 50m1 stop
Spirit Airlines Logo
6:00 am - 2:38 pm
SJU
-
BOS
9h 38m1 stop
$159Spirit Airlines
mar., ene. 20 - mar., ene. 27
Multiple Airlines Logo
6:00 am - 3:12 pm
BOS
-
SJU
8h 12m1 stop
Multiple Airlines Logo
10:52 am - 2:12 pm
SJU
-
BOS
4h 20mnonstop
$160Multiple Airlines
lun., ene. 26 - vie., ene. 30

Spirit Airlines flights from Boston to San Juan Luis Munoz Marin Intl Airport

Our best Spirit Airlines deals on Boston to San Juan Luis Munoz Marin Intl Airport flight tickets
Spirit Airlines
Dec 31
BOS7:34 pmBoston Logan Intl
4h 07m
SJU12:41 amSan Juan Luis Munoz Marin Intl
Jan 16
SJU4:40 pmSan Juan Luis Munoz Marin Intl
8h 17m
1 stop
BOS11:57 pmBoston Logan Intl
Spirit Airlines
Jan 30
BOS3:43 pmBoston Logan Intl
17h 04m
1 stop
SJU9:47 amSan Juan Luis Munoz Marin Intl
Feb 2
SJU10:52 amSan Juan Luis Munoz Marin Intl
4h 20m
BOS2:12 pmBoston Logan Intl
Spirit Airlines
Feb 23
BOS2:23 pmBoston Logan Intl
7h 46m
1 stop
SJU11:09 pmSan Juan Luis Munoz Marin Intl
Mar 3
SJU11:22 amSan Juan Luis Munoz Marin Intl
4h 21m
BOS2:43 pmBoston Logan Intl

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

Our best Frontier deals on Boston to San Juan Luis Munoz Marin Intl Airport flight tickets
Frontier
Apr 5
BOS10:35 amBoston Logan Intl
4h 10m
SJU2:45 pmSan Juan Luis Munoz Marin Intl
Apr 11
SJU6:00 amSan Juan Luis Munoz Marin Intl
4h 35m
BOS10:35 amBoston Logan Intl
Frontier
Jan 6
BOS12:31 pmBoston Logan Intl
3h 59m
SJU5:30 pmSan Juan Luis Munoz Marin Intl
Jan 10
SJU9:23 pmSan Juan Luis Munoz Marin Intl
13h 48m
1 stop
BOS10:11 amBoston Logan Intl
Frontier
Feb 21
BOS12:35 pmBoston Logan Intl
24h 24m
1 stop
SJU1:59 pmSan Juan Luis Munoz Marin Intl
Feb 28
SJU5:25 pmSan Juan Luis Munoz Marin Intl
16h 41m
1 stop
BOS9:06 amBoston Logan Intl

momondo Fare Finder

 
Customize your flight search to find flights from Boston to San Juan Luis Munoz Marin Intl Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated diciembre 23, 2025.
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

jue. 1/1

7:34 pm-12:41 am

Nonstop4h 07m

San Juan Luis Munoz Marin Intl

sáb. 1/17

10:52 am-2:12 pm

Nonstop4h 20m

$150

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

dom. 4/5

10:35 am-2:45 pm

Nonstop4h 10m

San Juan Luis Munoz Marin Intl

sáb. 4/11

6:00 am-10:35 am

Nonstop4h 35m

$151

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

vie. 1/30

3:43 pm-11:33 pm

1 stop6h 50m

San Juan Luis Munoz Marin Intl

vie. 2/13

11:22 am-2:43 pm

Nonstop4h 21m

$152

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

jue. 2/19

3:00 pm-8:06 pm

Nonstop4h 06m

San Juan Luis Munoz Marin Intl

mar. 2/24

4:11 pm-1:13 am

1 stop10h 02m

$154

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

jue. 2/19

3:00 pm-8:06 pm

Nonstop4h 06m

San Juan Luis Munoz Marin Intl

mié. 2/25

5:25 pm-9:06 am

1 stop16h 41m

$155

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

dom. 2/1

3:43 pm-9:47 am

1 stop17h 04m

San Juan Luis Munoz Marin Intl

vie. 2/6

10:52 am-2:12 pm

Nonstop4h 20m

$156

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

mar. 1/20

3:43 pm-9:47 am

1 stop17h 04m

San Juan Luis Munoz Marin Intl

mar. 1/27

6:00 am-2:38 pm

1 stop9h 38m

$157

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

mar. 1/6

12:31 pm-5:30 pm

Nonstop3h 59m

San Juan Luis Munoz Marin Intl

jue. 1/22

6:00 am-2:38 pm

1 stop9h 38m

$158

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

mar. 1/20

3:43 pm-11:33 pm

1 stop6h 50m

San Juan Luis Munoz Marin Intl

mar. 1/27

6:00 am-2:38 pm

1 stop9h 38m

$159

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

lun. 1/26

6:00 am-3:12 pm

1 stop8h 12m

San Juan Luis Munoz Marin Intl

vie. 1/30

10:52 am-2:12 pm

Nonstop4h 20m

$160

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Juan from

How to get the cheapest flight ticket from Boston to San Juan Luis Munoz Marin Intl Airport

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 Luis Munoz Marin Intl Airport?

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

If you aren’t able to travel to San Juan Luis Munoz Marin Intl Airport during the month of January, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $264.

What is the cheapest day to depart on your flight to San Juan Luis Munoz Marin Intl Airport?

On average, the least expensive day to fly to San Juan Luis Munoz Marin Intl Airport from Boston is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $303. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Saturday is the most expensive day to depart from Boston because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $341.

What is the cheapest time of day to depart on your flight to San Juan Luis Munoz Marin Intl Airport?

The cheapest time of day to fly to San Juan Luis Munoz Marin Intl Airport is in the afternoon when flights can be purchased for as low as $312. Flights at noon are often more expensive with an average ticket price of $337.

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

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

How far in advance should I book a flight to San Juan Luis Munoz Marin Intl Airport?

You are more likely to see cheaper flights to San Juan Luis Munoz Marin Intl Airport from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to San Juan Luis Munoz Marin Intl Airport for around $305 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Juan Luis Munoz Marin Intl Airport from Boston for as low as $268 on momondo.

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

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

Can stopping save me money on Boston to San Juan Luis Munoz Marin Intl Airport flights?

No. A direct flight is the cheapest option for a flight between Boston to San Juan Luis Munoz Marin Intl Airport.

How have Boston to San Juan Luis Munoz Marin Intl Airport flight prices changed over time?

As of December 2025, prices for Boston to San Juan Luis Munoz Marin Intl Airport flights are approximately 13% more expensive when compared to flights at the same time last year.

When to book flights from Boston to San Juan Luis Munoz Marin Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to San Juan Luis Munoz Marin Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Boston to San Juan Luis Munoz Marin Intl Airport (BOS to SJU) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to San Juan Luis Munoz Marin Intl Airport

Best Price Found

$114

Fastest flight time

3h 55m

Direct flights

Every day
The best one-way flight to San Juan Luis Munoz Marin Intl Airport from Boston in the past 72 hours is $114. The best round-trip flight deal from Boston to San Juan Luis Munoz Marin Intl Airport found on momondo in the last 72 hours is $235.
The fastest flight from Boston to San Juan Luis Munoz Marin Intl Airport takes 3h 55m
Direct flights go from Boston to San Juan Luis Munoz Marin Intl Airport every day.
  • How far is Boston Logan Intl to San Juan Luis Munoz Marin Intl by plane?

    The distance between Boston Logan Intl and San Juan Luis Munoz Marin Intl is about 1678.1 mi. Flights usually cover this in 3h 55m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Boston Logan Intl Airport to San Juan Luis Munoz Marin Intl Airport are updated daily.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to San Juan Luis Munoz Marin Intl Airport.

  • What documentation or ID do you need to fly to San Juan Luis Munoz Marin Intl Airport?

    The necessary travel and health documents for your San Juan Luis Munoz Marin Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Boston to San Juan Luis Munoz Marin Intl Airport?

  • What is the most popular airline from Boston to San Juan Luis Munoz Marin Intl Airport?

Best airlines flying from Boston to San Juan Luis Munoz Marin Intl Airport

Compare and see reviews for airlines that fly from Boston to San Juan Luis Munoz Marin Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $90Free CancellationRating
5.8
3,074 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $98Free CancellationRating
6.3
8,194 reviews
Search Spirit Airlines flights
DeltaPriceFrom $151Free CancellationRating
7.9
8,015 reviews
Search Delta flights
JetBluePriceFrom $175Free CancellationRating
7.2
2,898 reviews
Search JetBlue flights
United AirlinesPriceFrom $190Free CancellationRating
7.4
9,106 reviews
Search United Airlines flights
American AirlinesPriceFrom $234Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights
SouthwestPriceFrom $383Free CancellationRating
8.0
4,255 reviews
Search Southwest flights
  • Delta Flights From Boston to San Juan Luis Munoz Marin Intl Airport

    The lowest priced Delta flight from Boston to San Juan Luis Munoz Marin Intl Airport from the last 72 hours was $151. Generally, Delta has 14 flights on this route every week with an average price of $331. Delta is rated 7.9/10 by our users.

  • JetBlue Flights From Boston to San Juan Luis Munoz Marin Intl Airport

    The best JetBlue deal for Boston to San Juan Luis Munoz Marin Intl Airport flight tickets found on momondo in the last 72 hours was $175, round-trip. It should be noted that an average JetBlue flight deal for this route in this time was higher, at $349 round-trip. JetBlue operates 21 flights out of Boston into San Juan Luis Munoz Marin Intl Airport in an average week, so prices vary by time and availability. 2,898 JetBlue reviews by users on momondo have scored the airline at 7.2/10.

Traveling to a place near San Juan?

Book flights to San Juan if you plan to visit one of these locations
Carolina
Fajardo
Dorado
Luquillo
Humacao
Caguas
Rio Grande
Bayamón

Why use momondo?

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

It is quick and easy to find Boston to San Juan flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to San Juan that suits you.

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

All flight searches from Boston to San Juan on momondo can be filtered to show those which offer 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?

If you are simply researching potential flights to San Juan, momondo offers a useful price alert feature which will track prices for flights to San Juan from Boston and alert you when they change.

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1 adult
jue. 1/22
jue. 1/29

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