To San Juan

Cheap Flights from Boston to San Juan

Browse current best options from Boston. Become a member to unlock all deals and get alerts when new deals appear.

Deals from

Boston

RatePunk searches hundreds of travel sites at once for deals on flights to San Juan

Prices updated 24 days ago

486,190 searches this week

171 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated May 29, 2026.)

Today’s best flight deals from Boston to San Juan

Explore current cheapest deals departing from Boston to San Juan

Round trip

Sort by: Cheapest

October 3 - October 31

Cheapest

Earliest

BOS - San Juan

$266

$272

Round trip

October 10 - October 31

Cheapest

BOS - San Juan

$278

$272

Round trip

October 3 - October 9

Best

Earliest

BOS - San Juan

$297

$281

Round trip

October 3 - October 17

Earliest

BOS - San Juan

$276

$281

Round trip

October 3 - October 24

Earliest

BOS - San Juan

$267

$281

Round trip

October 3 - October 10

Best

Earliest

BOS - San Juan

$297

$281

Round trip

October 10 - October 24

BOS - San Juan

$288

$281

Round trip

October 10 - October 17

Best

BOS - San Juan

$307

$281

Round trip

November 3 - November 13

BOS - San Juan

$311

$354

Round trip

November 3 - November 18

BOS - San Juan

$303

$354

Round trip

Unlock all 500+ flight deals to San Juan and get alerts when great deals appear

Route Intelligence — 486,190 Searches this Week

Insights for flights from Boston to San Juan

Flights from Boston to San Juan cover a distance of 2702 km, classifying this as a medium-haul route. Right now, fares to San Juan from Boston are above the typical level, with prices typically ranging from $212–$707, and a median fare of $403. Currently, new deals appear almost daily for this route, though 0% of recent fares were classified as a good price.

When considering cheap flights from Boston to San Juan, the data indicates that January is typically the most affordable month to fly, with a median fare of $166. Other cost-effective options include April, which sees a median fare of $189, and May, with a median fare of $212.

For travelers flying from Boston to San Juan, most itineraries connect at least once. Only 34.2% of recent fares were for direct flights from Boston to San Juan. When a connection is necessary, the typical number of stopovers is 2.

A typical journey from Boston to San Juan takes approximately 12h 3m, including connections. This duration accounts for both direct and connecting itineraries, reflecting the overall travel time you can expect for this route.

How much is a round trip from Boston to San Juan

Regular price: $225 - $354

Prices for flights from Boston to San Juan are currently within the regular range.

The regular price range for flights from Boston to San Juan is between $225 and $354. The current lowest deal is $272 with Allegiant Air, for travel from Oct 3 to Oct 31.

now $272

Low $225

High $354

The cheapest time to fly from Boston to San Juan

The cheapest month to fly from Boston to San Juan is January, with a median price of $166. The most expensive month is November, with a median price of $1096. Prices are generally lower from January to September.

January

Cheapest

Flights from $166

November

Most Expensive

Flights from $1,096

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from Boston to San Juan

JetBlue Airways

Last-minute flights going from Boston to San Juan

Thu, Jul 9

⌛ Last-Minute

BOS - San Juan

Boston (BOS) - San Juan (SJU)

JetBlue Airways

$211

$694

One-way

Thu, Jul 9

⌛ Last-Minute

BOS - San Juan

Boston (BOS) - San Juan (SJU)

JetBlue Airways

$210

$694

One-way

Mon, Aug 3

⌛ Last-Minute

BOS - San Juan

Boston (BOS) - San Juan (SJU)

JetBlue Airways

$169

$466

One-way

Mon, Aug 3

⌛ Last-Minute

BOS - San Juan

Boston (BOS) - San Juan (SJU)

JetBlue Airways

$212

$578

One-way

Mon, Aug 3

⌛ Last-Minute

BOS - San Juan

Boston (BOS) - San Juan (SJU)

JetBlue Airways

$180

$578

One-way

Mon, Aug 3

⌛ Last-Minute

BOS - San Juan

Boston (BOS) - San Juan (SJU)

JetBlue Airways

$174

$630

One-way

Biggest price drops on these dates for flights from Boston to San Juan

7 nights

Oct 10 - Oct 17

$307 → $281

6 nights

Oct 3 - Oct 9

$297 → $281

7 nights

Oct 3 - Oct 10

$297 → $281

14 nights

Oct 10 - Oct 24

$288 → $281

Popular Airports to fly from Boston to San Juan

Boston - San Juan route insights

💸 Price insights

Recent fares are above the typical level

Recent fares for Boston to San Juan are above the typical level at $272.

📅 Best time to fly

Fly in January for the best prices

Historically, January offers the lowest median prices at $166 for Boston to San Juan.

⏱️ Flight duration

Expect a 12h 3m flight

The median flight duration from Boston to San Juan is 12 hours and 3 minutes.

✈️ Airlines & availability

Connecting flights are more common

About 34% of deals are direct, with connecting flights typically having 2 stopovers.

🏆 Airline highlight

JetBlue Airways offers direct flights

JetBlue Airways is an airline that provides direct flight options on this route.

🎯 Booking tip

Deals appear frequently

Deals for flights from Boston to San Juan appear frequently, more than once a day.

Boston main airports to depart from

Logan International (BOS)

Cheapest

Boston Logan International Airport (BOS) is a great option for flights from Boston to San Juan.

📍 ~5 km from city center (reachable by car or public transport)

💸 Flights from ~$272

San Juan main airports to arrive at

Luis Muñoz Marín International (SJU)

Cheapest

Luis Muñoz Marín International Airport is the primary arrival airport for flights to San Juan from Boston.

📍 ~10 km from San Juan (reachable by car)

💸 Flights from ~$272

Fernando Luis Ribas Dominicci (SIG)

Fernando Luis Ribas Dominicci Airport offers an alternative arrival option for flights to San Juan.

📍 ~2 km from San Juan (reachable by car)

Airports nearby San Juan used as alternative

Aguadilla Rafael Hernandez (BQN)

Aguadilla Rafael Hernandez is a reliable alternative for travelers on the western side of the island.

📍 ~105 km from San Juan (reachable by car)

💸 Flights from ~$322

Mercedita (PSE)

Mercedita is geographically the closest commercial alternative on the main island, serving the southern region.

📍 ~65 km from San Juan (reachable by car)

💸 Flights from ~$351

Cyril E. King (STT)

Cyril E. King is a major international hub in the US Virgin Islands with extensive US mainland connectivity.

📍 ~115 km from San Juan (reachable by inter-island flight or ferry)

💸 Flights from ~$293

Punta Cana International (PUJ)

Cheapest

Punta Cana International is a massive international hub with global connections, often offering lower fares.

📍 ~240 km from San Juan (reachable by international travel)

💸 Flights from ~$284

Henry E. Rohlsen (STX)

Henry E. Rohlsen is an alternative US territory airport with direct links to the US mainland.

📍 ~145 km from San Juan (reachable by inter-island flight)

💸 Flights from ~$504

Business & First Class Flight Deals to San Juan

San Juan, United States

47% AI deal score

$1,784

Frequently Asked Questions About Flights to San Juan

Historically, the best prices for flights from Boston to San Juan are found when booking 28 to 59 days in advance. During this period, the average price is around $230. Booking within 0-6 days of departure typically sees an average price of $325, while booking 7-13 days out averages $555. For those booking 60 or more days ahead, the average price is $549, indicating that booking too far in advance may not yield the lowest fares.

Across the trailing quarter, a good deal for a flight from Boston to San Juan is considered to be $212 or less. The median price for this route was $403. Prices can range significantly, with 75% of fares being $707 or less. Keeping an eye out for prices at or below the $212 threshold can help you secure a favorable fare.

Historically, January has been the cheapest month to fly from Boston to San Juan, with a median price of $166. April also offers competitive prices, with a median of $189. May typically sees a median price of $212, which is still considerably lower than the annual median price of $403 for this route. Planning your trip during these months could result in significant savings.

Related routes

Consider alternative routes from Boston

Flights from Boston to Accra Flights from Boston to Addis Ababa Flights from Boston to Ahmedabad Flights from Boston to Albuquerque Flights from Boston to Alicante Flights from Boston to Amsterdam Flights from Boston to Ankara Flights from Boston to Athens Flights from Boston to Atlanta Flights from Boston to Austin Flights from Boston to Bangkok Flights from Boston to Barcelona

Cheap Flights from Boston to San Juan

Today’s best flight deals from Boston to San Juan

Unlock all 500+ flight deals to San Juan and get alerts when great deals appear

Route Intelligence — 486,190 Searches this Week

Insights for flights from Boston to San Juan

How much is a round trip from Boston to San Juan

The cheapest time to fly from Boston to San Juan

Direct flights from Boston to San Juan

Last-minute flights going from Boston to San Juan

Biggest price drops on these dates for flights from Boston to San Juan

Popular Airports to fly from Boston to San Juan

Boston - San Juan route insights

Recent fares are above the typical level

Fly in January for the best prices

Expect a 12h 3m flight

Connecting flights are more common

JetBlue Airways offers direct flights

Deals appear frequently

Boston main airports to depart from

San Juan main airports to arrive at

Airports nearby San Juan used as alternative

Business & First Class Flight Deals to San Juan

Best Elite deals to San Juan

Aug 26

Aug 08

Sep 11

Sep 05

Aug 08

Sep 26

Oct 10

Aug 11

Jun 23

Sep 29

Sep 11

Aug 15

Sep 20

Sep 04

Aug 21

Aug 06

Jul 04

Jul 24

Oct 08

Aug 05

Jul 07

Aug 05

Jul 04

Aug 27

Jun 25

Sep 02

Sep 28

Sep 03

Sep 01

Jul 08

Jul 08

Jul 17

Jul 07

Jul 27

Jun 28

Jun 19

Nov 19

Aug 10

Aug 29

Aug 29

Aug 22

Aug 22

Aug 29

Aug 22

Jul 18

Jul 18

Jul 18

Jul 25

Jul 25

Jul 25

Jun 24

Jun 24

Frequently Asked Questions About Flights to San Juan

How early should I book Boston to San Juan flights to get the cheapest price?

How early should I book Boston to San Juan flights to get the cheapest price?

How do I know if a Boston to San Juan flight is a good deal?

How do I know if a Boston to San Juan flight is a good deal?