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Cheap flights from Boston to San Juan from $98

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 9/25. 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

Spirit Airlines Logo
11:13 am - 4:07 pmBOS-SJU
3h 54mnonstop
Spirit Airlines Logo
5:27 pm - 8:34 pmSJU-BOS
4h 07mnonstop
$187Spirit Airlines
Find Deal
수, 1월 21 - 토, 1월 24
Spirit Airlines Logo
12:20 pm - 8:56 pmBOS-SJU
8h 36m1 stop
Spirit Airlines Logo
6:44 am - 1:48 pmSJU-BOS
7h 04m1 stop
$189Spirit Airlines
Find Deal
토, 9월 20 - 화, 9월 30
Spirit Airlines Logo
12:20 pm - 8:56 pmBOS-SJU
8h 36m1 stop
Spirit Airlines Logo
6:44 am - 1:48 pmSJU-BOS
7h 04m1 stop
$193Spirit Airlines
Find Deal
수, 9월 17 - 수, 9월 24
Spirit Airlines Logo
9:39 pm - 9:52 amBOS-SJU
11h 13m1 stop
Spirit Airlines Logo
5:27 pm - 8:34 pmSJU-BOS
4h 07mnonstop
$195Spirit Airlines
Find Deal
화, 2월 3 - 화, 2월 10
Spirit Airlines Logo
11:13 am - 4:07 pmBOS-SJU
3h 54mnonstop
Spirit Airlines Logo
12:10 pm - 10:08 pmSJU-BOS
10h 58m1 stop
$197Spirit Airlines
Find Deal
수, 1월 21 - 화, 1월 27
Spirit Airlines Logo
12:20 pm - 8:56 pmBOS-SJU
8h 36m1 stop
Spirit Airlines Logo
6:44 am - 1:48 pmSJU-BOS
7h 04m1 stop
$200Spirit Airlines
Find Deal
화, 9월 16 - 화, 9월 23
Logo
12:20 pm - 8:56 pmBOS-SJU
8h 36m1 stop
Logo
12:28 am - 8:43 amSJU-BOS
8h 15m1 stop
$202
Find Deal
토, 9월 20 - 수, 9월 24
Logo
5:50 am - 1:43 pmBOS-SJU
7h 53m1 stop
Logo
12:28 am - 8:43 amSJU-BOS
8h 15m1 stop
$232
Find Deal
목, 9월 25 - 수, 10월 1
Frontier Logo
8:47 am - 11:59 pmBOS-SJU
15h 12m2 stops
Frontier Logo
12:28 am - 8:43 amSJU-BOS
8h 15m1 stop
$240Frontier
Find Deal
목, 9월 25 - 토, 9월 27
JetBlue Logo
8:00 am - 6:13 pmBOS-SJU
9h 13m1 stop
JetBlue Logo
8:10 am - 11:23 amSJU-BOS
4h 13mnonstop
$260JetBlue
Find Deal
수, 11월 12 - 화, 11월 18

JetBlue flights from Boston to San Juan

Our best JetBlue deals on Boston to San Juan flight tickets
JetBlue
Sep 9
BOS8:00 amBoston Logan Intl
4h 17m
SJU12:17 pmSan Juan Luis Munoz Marin Intl
Sep 12
SJU7:55 pmSan Juan Luis Munoz Marin Intl
4h 02m
BOS11:57 pmBoston Logan Intl
$255
Find similar
JetBlue
Nov 12
BOS8:00 amBoston Logan Intl
9h 13m
1 stop
SJU6:13 pmSan Juan Luis Munoz Marin Intl
Nov 18
SJU8:10 amSan Juan Luis Munoz Marin Intl
4h 13m
BOS11:23 amBoston Logan Intl
$260
Find similar
JetBlue
Sep 7
BOS12:00 pmBoston Logan Intl
4h 06m
SJU4:06 pmSan Juan Luis Munoz Marin Intl
Sep 27
SJU6:00 amSan Juan Luis Munoz Marin Intl
7h 49m
1 stop
BOS1:49 pmBoston Logan Intl
$270
Find similar

Frontier flights from Boston to San Juan

Our best Frontier deals on Boston to San Juan flight tickets
Frontier
Sep 25
BOS8:47 amBoston Logan Intl
15h 12m
2 stops
SJU11:59 pmSan Juan Luis Munoz Marin Intl
Sep 27
SJU12:28 amSan Juan Luis Munoz Marin Intl
8h 15m
1 stop
BOS8:43 amBoston Logan Intl
$240
Find similar
Frontier
Sep 7
BOS9:38 amBoston Logan Intl
13h 45m
1 stop
SJU11:23 pmSan Juan Luis Munoz Marin Intl
Sep 17
SJU1:06 pmSan Juan Luis Munoz Marin Intl
19h 37m
1 stop
BOS8:43 amBoston Logan Intl
$274
Find similar
Frontier
Aug 30
BOS12:53 pmBoston Logan Intl
30h 15m
1 stop
SJU7:08 pmSan Juan Luis Munoz Marin Intl
Sep 6
SJU1:06 pmSan Juan Luis Munoz Marin Intl
19h 37m
1 stop
BOS8:43 amBoston Logan Intl
$284
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 8월 28, 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

수 1/21

11:13 am-4:07 pm

Nonstop3h 54m

San Juan Luis Munoz Marin Intl

토 1/24

5:27 pm-8:34 pm

Nonstop4h 07m

$187

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

토 9/20

12:20 pm-8:56 pm

1 stop8h 36m

San Juan Luis Munoz Marin Intl

화 9/30

6:44 am-1:48 pm

1 stop7h 04m

$189

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

수 9/17

12:20 pm-8:56 pm

1 stop8h 36m

San Juan Luis Munoz Marin Intl

수 9/24

6:44 am-1:48 pm

1 stop7h 04m

$193

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

화 2/3

9:39 pm-9:52 am

1 stop11h 13m

San Juan Luis Munoz Marin Intl

화 2/10

5:27 pm-8:34 pm

Nonstop4h 07m

$195

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

수 1/21

11:13 am-4:07 pm

Nonstop3h 54m

San Juan Luis Munoz Marin Intl

화 1/27

12:10 pm-10:08 pm

1 stop10h 58m

$197

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

화 9/16

12:20 pm-8:56 pm

1 stop8h 36m

San Juan Luis Munoz Marin Intl

화 9/23

6:44 am-1:48 pm

1 stop7h 04m

$200

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

토 9/20

12:20 pm-8:56 pm

1 stop8h 36m

San Juan Luis Munoz Marin Intl

수 9/24

12:28 am-8:43 am

1 stop8h 15m

$202

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

목 9/25

5:50 am-1:43 pm

1 stop7h 53m

San Juan Luis Munoz Marin Intl

수 10/1

12:28 am-8:43 am

1 stop8h 15m

$232

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

목 9/25

8:47 am-11:59 pm

2 stops15h 12m

San Juan Luis Munoz Marin Intl

토 9/27

12:28 am-8:43 am

1 stop8h 15m

$240

BostonSan Juan

BOS - SJU

BOSSJU

Boston Logan Intl

수 11/12

8:00 am-6:13 pm

1 stop9h 13m

San Juan Luis Munoz Marin Intl

화 11/18

8:10 am-11:23 am

Nonstop4h 13m

$260

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 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 September, then October is your next best option. Flight prices from Boston to San Juan during October average around $223.

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 $288. The most expensive day to fly to San Juan is Saturday, with ticket prices averaging around $334.

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 $302. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $341 on average. Flights to San Juan from Boston in the evening 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 $282 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 $234 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 48m

Direct flights

Every day

Airports in San Juan

1 airport
The fastest flight from Boston to San Juan takes 3h 48m
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
3,204 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $99Free CancellationRating
6.3
8,028 reviews
Search Spirit Airlines flights
DeltaPriceFrom $140Free CancellationRating
7.9
7,977 reviews
Search Delta flights
JetBluePriceFrom $154Free CancellationRating
7.2
2,920 reviews
Search JetBlue flights
United AirlinesPriceFrom $194Free CancellationRating
7.4
8,944 reviews
Search United Airlines flights
American AirlinesPriceFrom $295Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $398Free CancellationRating
8.0
4,242 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.

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화 9/2
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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