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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.
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0 bags

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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
10:52 am - 2:12 pmSJU-BOS
4h 20mnonstop
$221Spirit Airlines
Find Deal
dom., feb. 8 - lun., feb. 9
Spirit Airlines Logo
5:45 am - 8:27 pmBOS-SJU
13h 42m1 stop
Spirit Airlines Logo
4:10 am - 7:06 pmSJU-BOS
15h 56m2 stops
$222Spirit Airlines
Find Deal
mié., dic. 3 - vie., dic. 5
JetBlue Logo
8:20 pm - 1:22 amBOS-SJU
4h 02mnonstop
JetBlue Logo
6:15 am - 9:25 amSJU-BOS
4h 10mnonstop
$223JetBlue
Find Deal
sáb., feb. 7 - mié., feb. 11
Multiple Airlines Logo
3:43 pm - 11:32 pmBOS-SJU
6h 49m1 stop
Multiple Airlines Logo
6:00 am - 9:23 amSJU-BOS
4h 23mnonstop
$224Multiple Airlines
Find Deal
dom., feb. 8 - jue., feb. 12
Frontier Logo
6:00 am - 3:06 pmBOS-SJU
8h 06m1 stop
Frontier Logo
6:00 am - 9:23 amSJU-BOS
4h 23mnonstop
$225Frontier
Find Deal
mar., mar. 3 - jue., mar. 5
Spirit Airlines Logo
8:11 pm - 10:33 amBOS-SJU
13h 22m1 stop
Spirit Airlines Logo
5:00 pm - 10:01 amSJU-BOS
18h 01m1 stop
$226Spirit Airlines
Find Deal
sáb., dic. 6 - mar., dic. 9
Multiple Airlines Logo
6:00 am - 3:06 pmBOS-SJU
8h 06m1 stop
Multiple Airlines Logo
10:52 am - 2:12 pmSJU-BOS
4h 20mnonstop
$231Multiple Airlines
Find Deal
mar., feb. 17 - vie., feb. 27
JetBlue Logo
6:55 pm - 11:54 pmBOS-SJU
3h 59mnonstop
JetBlue Logo
5:18 pm - 8:32 pmSJU-BOS
4h 14mnonstop
$250JetBlue
Find Deal
dom., dic. 7 - jue., dic. 25
Delta Logo
8:10 am - 1:10 pmBOS-SJU
4h 00mnonstop
Delta Logo
4:34 pm - 8:00 pmSJU-BOS
4h 26mnonstop
$260Delta
Find Deal
lun., dic. 8 - mié., dic. 24
Delta Logo
8:10 am - 1:10 pmBOS-SJU
4h 00mnonstop
Delta Logo
4:34 pm - 8:00 pmSJU-BOS
4h 26mnonstop
$262Delta
Find Deal
lun., dic. 8 - dom., dic. 21

Spirit Airlines flights from Boston to San Juan

Our best Spirit Airlines deals on Boston to San Juan flight tickets
Spirit Airlines
Feb 8
BOS3:18 pmBoston Logan Intl
4h 06m
SJU8:24 pmSan Juan Luis Munoz Marin Intl
Feb 9
SJU10:52 amSan Juan Luis Munoz Marin Intl
4h 20m
BOS2:12 pmBoston Logan Intl
$221
Find similar
Spirit Airlines
Dec 3
BOS5:45 amBoston Logan Intl
13h 42m
1 stop
SJU8:27 pmSan Juan Luis Munoz Marin Intl
Dec 5
SJU4:10 amSan Juan Luis Munoz Marin Intl
15h 56m
2 stops
BOS7:06 pmBoston Logan Intl
$222
Find similar
Spirit Airlines
Dec 6
BOS8:11 pmBoston Logan Intl
13h 22m
1 stop
SJU10:33 amSan Juan Luis Munoz Marin Intl
Dec 9
SJU5:00 pmSan Juan Luis Munoz Marin Intl
18h 01m
1 stop
BOS10:01 amBoston Logan Intl
$226
Find similar

JetBlue flights from Boston to San Juan

Our best JetBlue deals on Boston to San Juan flight tickets
JetBlue
Feb 7
BOS8:20 pmBoston Logan Intl
4h 02m
SJU1:22 amSan Juan Luis Munoz Marin Intl
Feb 11
SJU6:15 amSan Juan Luis Munoz Marin Intl
4h 10m
BOS9:25 amBoston Logan Intl
$223
Find similar
JetBlue
Nov 10
BOS7:00 pmBoston Logan Intl
3h 59m
SJU11:59 pmSan Juan Luis Munoz Marin Intl
Nov 14
SJU8:10 amSan Juan Luis Munoz Marin Intl
4h 13m
BOS11:23 amBoston Logan Intl
$228
Find similar
JetBlue
Nov 11
BOS7:40 amBoston Logan Intl
4h 04m
SJU12:44 pmSan Juan Luis Munoz Marin Intl
Nov 15
SJU6:10 amSan Juan Luis Munoz Marin Intl
4h 09m
BOS9:19 amBoston Logan Intl
$243
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 noviembre 6, 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

dom. 2/8

3:18 pm-8:24 pm

Nonstop4h 06m

San Juan Luis Munoz Marin Intl

lun. 2/9

10:52 am-2:12 pm

Nonstop4h 20m

$221

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

mié. 12/3

5:45 am-8:27 pm

1 stop13h 42m

San Juan Luis Munoz Marin Intl

vie. 12/5

4:10 am-7:06 pm

2 stops15h 56m

$222

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

sáb. 2/7

8:20 pm-1:22 am

Nonstop4h 02m

San Juan Luis Munoz Marin Intl

mié. 2/11

6:15 am-9:25 am

Nonstop4h 10m

$223

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

dom. 2/8

3:43 pm-11:32 pm

1 stop6h 49m

San Juan Luis Munoz Marin Intl

jue. 2/12

6:00 am-9:23 am

Nonstop4h 23m

$224

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

mar. 3/3

6:00 am-3:06 pm

1 stop8h 06m

San Juan Luis Munoz Marin Intl

jue. 3/5

6:00 am-9:23 am

Nonstop4h 23m

$225

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

sáb. 12/6

8:11 pm-10:33 am

1 stop13h 22m

San Juan Luis Munoz Marin Intl

mar. 12/9

5:00 pm-10:01 am

1 stop18h 01m

$226

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

mar. 2/17

6:00 am-3:06 pm

1 stop8h 06m

San Juan Luis Munoz Marin Intl

vie. 2/27

10:52 am-2:12 pm

Nonstop4h 20m

$231

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

dom. 12/7

6:55 pm-11:54 pm

Nonstop3h 59m

San Juan Luis Munoz Marin Intl

jue. 12/25

5:18 pm-8:32 pm

Nonstop4h 14m

$250

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

lun. 12/8

8:10 am-1:10 pm

Nonstop4h 00m

San Juan Luis Munoz Marin Intl

mié. 12/24

4:34 pm-8:00 pm

Nonstop4h 26m

$260

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

lun. 12/8

8:10 am-1:10 pm

Nonstop4h 00m

San Juan Luis Munoz Marin Intl

dom. 12/21

4:34 pm-8:00 pm

Nonstop4h 26m

$262

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

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 $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 $296 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 $249 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 54m

Direct flights

Every day

Airports in San Juan

1 airport
The fastest flight from Boston to San Juan takes 3h 54m
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 54m.

  • 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
3,116 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $100Free CancellationRating
6.3
8,115 reviews
Search Spirit Airlines flights
DeltaPriceFrom $144Free CancellationRating
7.9
8,001 reviews
Search Delta flights
JetBluePriceFrom $172Free CancellationRating
7.2
2,907 reviews
Search JetBlue flights
United AirlinesPriceFrom $190Free CancellationRating
7.4
9,003 reviews
Search United Airlines flights
American AirlinesPriceFrom $288Free CancellationRating
7.2
11,040 reviews
Search American Airlines flights
SouthwestPriceFrom $383Free CancellationRating
8.0
4,240 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

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sáb. 12/6
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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