Cheap Flights from Boston Logan International to San Juan

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Compare Boston Logan International to San Juan flight deals

Find the cheapest month or even day of the year to fly to San Juan

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Flight deals from Boston Logan International to San Juan

Looking for a cheap last-minute deal or the best round-trip flight from Boston Logan International Airport to San Juan? If you want to travel next month, round-trip fares start from $453. Find the lowest prices on one-way and round-trip tickets right here.

San Juan.$450 per passenger.Departing Mon, Dec 14, returning Fri, Dec 25.Round-trip flight with jetBlue and Frontier Airlines.Outbound indirect flight with jetBlue, departing from Boston Logan International on Mon, Dec 14, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with Frontier Airlines, departing from San Juan Luis Munoz Marin on Fri, Dec 25, arriving in Boston Logan International.Price includes taxes and charges.From $450, select.

San Juan.$453 per passenger.Departing Sat, Oct 24, returning Sat, Oct 31.Round-trip flight with Allegiant Air and Frontier Airlines.Outbound indirect flight with Allegiant Air, departing from Boston Logan International on Sat, Oct 24, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with Frontier Airlines, departing from San Juan Luis Munoz Marin on Sat, Oct 31, arriving in Boston Logan International.Price includes taxes and charges.From $453, select.

San Juan.$454 per passenger.Departing Tue, Oct 27, returning Fri, Nov 6.Round-trip flight with Delta.Outbound direct flight with Delta departing from Boston Logan International on Tue, Oct 27, arriving in San Juan Luis Munoz Marin.Inbound direct flight with Delta departing from San Juan Luis Munoz Marin on Fri, Nov 6, arriving in Boston Logan International.Price includes taxes and charges.From $454, select.

San Juan.$455 per passenger.Departing Mon, Nov 9, returning Fri, Nov 13.Round-trip flight with Delta.Outbound direct flight with Delta departing from Boston Logan International on Mon, Nov 9, arriving in San Juan Luis Munoz Marin.Inbound direct flight with Delta departing from San Juan Luis Munoz Marin on Fri, Nov 13, arriving in Boston Logan International.Price includes taxes and charges.From $455, select.

San Juan.$455 per passenger.Departing Tue, Oct 6, returning Thu, Oct 15.Round-trip flight with Delta.Outbound direct flight with Delta departing from Boston Logan International on Tue, Oct 6, arriving in San Juan Luis Munoz Marin.Inbound direct flight with Delta departing from San Juan Luis Munoz Marin on Thu, Oct 15, arriving in Boston Logan International.Price includes taxes and charges.From $455, select.

San Juan.$455 per passenger.Departing Mon, Sep 28, returning Tue, Oct 6.Round-trip flight with Delta.Outbound direct flight with Delta departing from Boston Logan International on Mon, Sep 28, arriving in San Juan Luis Munoz Marin.Inbound direct flight with Delta departing from San Juan Luis Munoz Marin on Tue, Oct 6, arriving in Boston Logan International.Price includes taxes and charges.From $455, select.

San Juan.$468 per passenger.Departing Sun, Nov 22, returning Wed, Dec 2.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Boston Logan International on Sun, Nov 22, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with Frontier Airlines, departing from San Juan Luis Munoz Marin on Wed, Dec 2, arriving in Boston Logan International.Price includes taxes and charges.From $468, select.

San Juan.$479 per passenger.Departing Mon, Dec 7, returning Sat, Dec 12.Round-trip flight with jetBlue.Outbound direct flight with jetBlue departing from Boston Logan International on Mon, Dec 7, arriving in San Juan Luis Munoz Marin.Inbound direct flight with jetBlue departing from San Juan Luis Munoz Marin on Sat, Dec 12, arriving in Boston Logan International.Price includes taxes and charges.From $479, select.

San Juan.$492 per passenger.Departing Mon, Feb 8, returning Fri, Feb 19.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Boston Logan International on Mon, Feb 8, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with Delta, departing from San Juan Luis Munoz Marin on Fri, Feb 19, arriving in Boston Logan International.Price includes taxes and charges.From $492, select.

San Juan.$492 per passenger.Departing Mon, Jan 11, returning Fri, Jan 22.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Boston Logan International on Mon, Jan 11, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with Delta, departing from San Juan Luis Munoz Marin on Fri, Jan 22, arriving in Boston Logan International.Price includes taxes and charges.From $492, select.

San Juan.$497 per passenger.Departing Sun, Jan 31, returning Sun, Feb 7.Round-trip flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departing from Boston Logan International on Sun, Jan 31, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with Southwest Airlines, departing from San Juan Luis Munoz Marin on Sun, Feb 7, arriving in Boston Logan International.Price includes taxes and charges.From $497, select.

San Juan.$498 per passenger.Departing Tue, Nov 17, returning Wed, Dec 2.Round-trip flight with Delta.Outbound direct flight with Delta departing from Boston Logan International on Tue, Nov 17, arriving in San Juan Luis Munoz Marin.Inbound direct flight with Delta departing from San Juan Luis Munoz Marin on Wed, Dec 2, arriving in Boston Logan International.Price includes taxes and charges.From $498, select.

San Juan.$498 per passenger.Departing Wed, Mar 10, returning Thu, Mar 18.Round-trip flight with United.Outbound indirect flight with United, departing from Boston Logan International on Wed, Mar 10, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with United, departing from San Juan Luis Munoz Marin on Thu, Mar 18, arriving in Boston Logan International.Price includes taxes and charges.From $498, select.

San Juan.$499 per passenger.Departing Mon, Feb 8, returning Thu, Mar 11.Round-trip flight with United.Outbound indirect flight with United, departing from Boston Logan International on Mon, Feb 8, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with United, departing from San Juan Luis Munoz Marin on Thu, Mar 11, arriving in Boston Logan International.Price includes taxes and charges.From $499, select.

San Juan.$519 per passenger.Departing Wed, Apr 7, returning Fri, May 7.Round-trip flight with United.Outbound indirect flight with United, departing from Boston Logan International on Wed, Apr 7, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with United, departing from San Juan Luis Munoz Marin on Fri, May 7, arriving in Boston Logan International.Price includes taxes and charges.From $519, select.

San Juan.$526 per passenger.Departing Sun, May 23, returning Wed, May 26.Round-trip flight with United.Outbound indirect flight with United, departing from Boston Logan International on Sun, May 23, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with United, departing from San Juan Luis Munoz Marin on Wed, May 26, arriving in Boston Logan International.Price includes taxes and charges.From $526, select.

Find the cheapest month to fly from Boston Logan International to San Juan

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Boston Logan International to San Juan flights are currently cheapest in December.

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Direct flights from Boston Logan International to San Juan

Alternative Boston Logan International to San Juan routes

Looking for the cheapest, fastest or easiest route from Boston Logan International to San Juan? You could fly into the following airports instead.

Boston to San Juan: Flight information

The things to know before you go.

Cheapest flight found	$450
Cheapest month to fly	December
Average flight time	4 hrs, 4 mins
Most popular airline	jetBlue
Average flights per week	196

Finding cheap flights from Boston Logan International to San Juan: Frequently asked questions

How many airports are there in San Juan?

There are 6 airports in San Juan: San Juan Isla Grande, San Juan Luis Munoz Marin, Roosevelt Roads, Ponce, Vieques, and Culebra.

How much are round-trip flights from Boston Logan International to San Juan?

The best price we found for a round-trip flight from Boston Logan International to San Juan is $450. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Boston Logan International to San Juan?

4 hours and 4 minutes is the average flight time from Boston Logan International to San Juan.

Which airlines fly direct from Boston Logan International to San Juan?

jetBlue, Qatar Airways and Aer Lingus fly direct from Boston Logan International to San Juan.

How many flights are there a week from Boston Logan International to San Juan?

There are 98 flights per week flying from Boston Logan International to San Juan, as of September 2026.

When is the cheapest time to fly from Boston Logan International to San Juan?

The cheapest month to fly from Boston Logan International to San Juan is usually December.

What's the cheapest airport to fly to in San Juan?

If you're flying from Boston Logan International Airport, the cheapest airport near San Juan is San Juan Luis Munoz Marin – which is 11.3 km away from the center of San Juan. We've found flights to this airport from $450.

Which upcoming date is cheapest to fly from Boston Logan International Airport to San Juan on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Boston Logan International Airport to San Juan on Monday, December 14, 2026.

Can I get a direct flight from Boston Logan International Airport to San Juan?

Yes – the average flight time is 4 hours and 4 minutes.

How can I get the best flight deal from Boston Logan International Airport to San Juan?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Juan but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to San Juan?

We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to San Juan is around 40 days in advance, so don’t leave your flight to the last minute.

What’s the weather like in San Juan?

In September, the average temperature is usually around 28°C. August is typically the warmest month in San Juan, when it usually averages around 30°C. You can expect the least rain in January. The coldest month is February, with temperatures averaging 22°C. The rainiest month is September.

Which is the cheapest airline to fly with from Boston Logan International Airport to San Juan?

Currently, jetBlue and Delta offer the cheapest flight tickets to San Juan.

How to find cheap flights to San Juan from Boston Logan International

Looking for cheap tickets from Boston Logan International to San Juan? Here are a few tips on how to secure the best flight price and make your journey as smooth as possible.

Simply hit "search." From Delta Air Lines to international carriers like Emirates, we compare all major airlines along with the most popular online travel agents to find the cheapest plane tickets from Boston Logan International to San Juan. And with us, there are no hidden fees – what you see is what you pay.
Compare flight deals to San Juan from Boston Logan International from over 1,000 providers. Then choose the cheapest plane tickets or fastest journeys.
Flex your dates to find the best Boston Logan International–San Juan ticket prices. If you're flexible when it comes to your travel dates, use Skyscanner's "Whole month" tool to find the cheapest month, and even day to fly to San Juan from Boston Logan International.
Set up a Price Alert. You can easily track the fare of your cheap Boston Logan International–San Juan flights by creating an alert. Whenever prices go down or up, you'll get an email or push notification to help make sure you get the best possible flight deal.
Fly without stops. Only interested in direct flights between Boston Logan International and San Juan? Make sure to tick "Direct flights only" when performing a search. If there are direct flights available on the route, these will appear in the results.
Find the cheapest Business Class flights from Boston Logan International and San Juan. We scour the Internet for the best Business, Premium Economy and First Class flight fares to San Juan, too. Check the difference in price as you search – you might just stumble on a last-minute low fare. Note that not all cabin classes are available for every destination or airline.
Include nearby airports in your search. Widen your search for Boston Logan International to San Juan flight deals by selecting the "add nearby airports" option. This will allow you to see flight prices for all the nearest airports at your departure point and your destination and could help you save the next time you travel.

Combine your flight to San Juan from Boston Logan International with hotels and car rental

Once you've secured your cheap flight ticket from Boston Logan International to San Juan, discover the best prices and exclusive rates for hotels in San Juan or nearby. You can also compare hundreds of car rental companies at once so you get the best car rental price for your trip.