Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Boston to San Juan from $124

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 12/31. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Boston to San Juan

Cheap round-trip flights

Enter your travel dates to find the best prices.
Spirit Airlines Logo
3:18 pm - 8:24 pmBOS-SJU
4h 06mnonstop
Spirit Airlines Logo
6:00 am - 2:38 pmSJU-BOS
9h 38m1 stop
$212Spirit Airlines
Find Deal
Mon, Feb 2 - Tue, Feb 10
Multiple Airlines Logo
3:18 pm - 8:24 pmBOS-SJU
4h 06mnonstop
Multiple Airlines Logo
6:00 am - 9:23 amSJU-BOS
4h 23mnonstop
$213Multiple Airlines
Find Deal
Wed, Feb 25 - Mon, Mar 2
Spirit Airlines Logo
10:56 am - 12:16 amBOS-SJU
12h 20m1 stop
Spirit Airlines Logo
5:00 pm - 10:01 amSJU-BOS
18h 01m1 stop
$214Spirit Airlines
Find Deal
Tue, Dec 9 - Tue, Dec 16
Spirit Airlines Logo
10:56 am - 12:16 amBOS-SJU
12h 20m1 stop
Spirit Airlines Logo
11:38 am - 7:06 pmSJU-BOS
8h 28m1 stop
$215Spirit Airlines
Find Deal
Wed, Dec 10 - Fri, Dec 12
Spirit Airlines Logo
7:00 am - 11:32 pmBOS-SJU
15h 32m1 stop
Spirit Airlines Logo
4:40 pm - 11:57 pmSJU-BOS
8h 17m1 stop
$216Spirit Airlines
Find Deal
Sat, Jan 31 - Tue, Feb 3
Spirit Airlines Logo
5:30 am - 3:35 pmBOS-SJU
9h 05m1 stop
Spirit Airlines Logo
6:00 am - 2:38 pmSJU-BOS
9h 38m1 stop
$217Spirit Airlines
Find Deal
Sun, Feb 1 - Wed, Feb 11
Multiple Airlines Logo
5:14 pm - 12:42 pmBOS-SJU
18h 28m1 stop
Multiple Airlines Logo
6:00 am - 2:38 pmSJU-BOS
9h 38m1 stop
$218Multiple Airlines
Find Deal
Sun, Jan 18 - Tue, Jan 27
Spirit Airlines Logo
5:28 am - 3:35 pmBOS-SJU
9h 07m1 stop
Spirit Airlines Logo
10:52 am - 2:12 pmSJU-BOS
4h 20mnonstop
$219Spirit Airlines
Find Deal
Thu, Jan 29 - Sun, Feb 1
Multiple Airlines Logo
10:24 am - 3:28 pmBOS-SJU
4h 04mnonstop
Multiple Airlines Logo
11:52 am - 11:48 pmSJU-BOS
12h 56m1 stop
$220Multiple Airlines
Find Deal
Thu, Feb 19 - Fri, Feb 27
JetBlue Logo
8:20 pm - 1:22 amBOS-SJU
4h 02mnonstop
JetBlue Logo
6:15 am - 9:25 amSJU-BOS
4h 10mnonstop
$221JetBlue
Find Deal
Sun, Jan 18 - Tue, Jan 27

JetBlue flights from Boston to San Juan

Our best JetBlue deals on Boston to San Juan flight tickets
JetBlue
Dec 9
BOS6:55 pmBoston Logan Intl
3h 59m
SJU11:54 pmSan Juan Luis Munoz Marin Intl
Dec 17
SJU7:10 pmSan Juan Luis Munoz Marin Intl
4h 08m
BOS10:18 pmBoston Logan Intl
$223
Find similar
JetBlue
Dec 9
BOS12:55 pmBoston Logan Intl
4h 02m
SJU5:57 pmSan Juan Luis Munoz Marin Intl
Dec 16
SJU1:41 pmSan Juan Luis Munoz Marin Intl
4h 13m
BOS4:54 pmBoston Logan Intl
$226
Find similar
JetBlue
Mar 1
BOS2:16 pmBoston Logan Intl
7h 09m
1 stop
SJU10:25 pmSan Juan Luis Munoz Marin Intl
Mar 7
SJU6:10 amSan Juan Luis Munoz Marin Intl
4h 10m
BOS9:20 amBoston Logan Intl
$240
Find similar

Frontier flights from Boston to San Juan

Our best Frontier deals on Boston to San Juan flight tickets
Frontier
Mar 1
BOS10:24 amBoston Logan Intl
4h 04m
SJU3:28 pmSan Juan Luis Munoz Marin Intl
Mar 10
SJU3:06 pmSan Juan Luis Munoz Marin Intl
9h 58m
1 stop
BOS1:04 amBoston Logan Intl
$224
Find similar
Frontier
Mar 2
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
$225
Find similar
Frontier
Jan 1
BOS12:18 pmBoston Logan Intl
4h 04m
SJU5:22 pmSan Juan Luis Munoz Marin Intl
Jan 11
SJU9:37 pmSan Juan Luis Munoz Marin Intl
14h 14m
1 stop
BOS10:51 amBoston Logan Intl
$247
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Boston to San Juan 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 November 12, 2025.
Use the filters below to find and compare flights from Boston to San Juan that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

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 2/10

6:00 am-2:38 pm

1 stop9h 38m

$212

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

Wed 2/25

3:18 pm-8:24 pm

Nonstop4h 06m

San Juan Luis Munoz Marin Intl

Mon 3/2

6:00 am-9:23 am

Nonstop4h 23m

$213

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

Tue 12/9

10:56 am-12:16 am

1 stop12h 20m

San Juan Luis Munoz Marin Intl

Tue 12/16

5:00 pm-10:01 am

1 stop18h 01m

$214

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

Wed 12/10

10:56 am-12:16 am

1 stop12h 20m

San Juan Luis Munoz Marin Intl

Fri 12/12

11:38 am-7:06 pm

1 stop8h 28m

$215

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

Sat 1/31

7:00 am-11:32 pm

1 stop15h 32m

San Juan Luis Munoz Marin Intl

Tue 2/3

4:40 pm-11:57 pm

1 stop8h 17m

$216

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

Sun 2/1

5:30 am-3:35 pm

1 stop9h 05m

San Juan Luis Munoz Marin Intl

Wed 2/11

6:00 am-2:38 pm

1 stop9h 38m

$217

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

Sun 1/18

5:14 pm-12:42 pm

1 stop18h 28m

San Juan Luis Munoz Marin Intl

Tue 1/27

6:00 am-2:38 pm

1 stop9h 38m

$218

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

Thu 1/29

5:28 am-3:35 pm

1 stop9h 07m

San Juan Luis Munoz Marin Intl

Sun 2/1

10:52 am-2:12 pm

Nonstop4h 20m

$219

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

Thu 2/19

10:24 am-3:28 pm

Nonstop4h 04m

San Juan Luis Munoz Marin Intl

Fri 2/27

11:52 am-11:48 pm

1 stop12h 56m

$220

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

Sun 1/18

8:20 pm-1:22 am

Nonstop4h 02m

San Juan Luis Munoz Marin Intl

Tue 1/27

6:15 am-9:25 am

Nonstop4h 10m

$221

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to San Juan from

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 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 $263.

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 $299 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 $253 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?

  • 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
FrontierPriceFrom $59Free CancellationRating
5.8
3,113 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $100Free CancellationRating
6.3
8,137 reviews
Search Spirit Airlines flights
DeltaPriceFrom $144Free CancellationRating
7.9
8,008 reviews
Search Delta flights
JetBluePriceFrom $172Free CancellationRating
7.2
2,906 reviews
Search JetBlue flights
United AirlinesPriceFrom $190Free CancellationRating
7.4
9,015 reviews
Search United Airlines flights
American AirlinesPriceFrom $288Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights
SouthwestPriceFrom $383Free CancellationRating
8.0
4,235 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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 12/12
Fri 12/19
By creating a price alert you accept our terms of use and privacy policy.

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
San Juan Isla Grande Airport
San Juan Luis Munoz Marin Intl Airport