Cheap flights from Boston Logan International to San Juan Luis Munoz Marin

Compare Boston Logan International to San Juan Luis Munoz Marin flight deals

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

Book the best San Juan Luis Munoz Marin fare with no extra fees

Flight deals from Boston Logan International to San Juan Luis Munoz Marin

Looking for a cheap last-minute deal or the best round-trip flight from Boston Logan International Airport to San Juan Luis Munoz Marin Airport? If you want to travel next month, round-trip fares start from $303. Find the lowest prices on one-way and round-trip tickets right here.

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

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 Luis Munoz Marin flights are currently cheapest in August.

Direct flights from Boston Logan International to San Juan Luis Munoz Marin

Boston to San Juan: Flight information

The things to know before you go.
Cheapest flight found$266
Cheapest month to flyAugust
Average flight time4 hrs, 3 mins
Most popular airlinejetBlue
Average flights per week118

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

The best price we found for a round-trip flight from Boston Logan International to San Juan Luis Munoz Marin is $266. 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.
4 hours and 3 minutes is the average flight time from Boston Logan International to San Juan Luis Munoz Marin.
jetBlue, Qatar Airways and TAP Air Portugal fly direct from Boston Logan International to San Juan Luis Munoz Marin.
There are 118 flights per week flying from Boston Logan International to San Juan Luis Munoz Marin, as of May 2026.
The cheapest month to fly from Boston Logan International to San Juan Luis Munoz Marin is usually August.
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 Luis Munoz Marin Airport on Tuesday, August 4, 2026.
Yes – the average flight time is 4 hours and 3 minutes.
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 Luis Munoz Marin 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.
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.
Currently, Frontier Airlines and Delta offer the cheapest flight tickets to San Juan Luis Munoz Marin.

Flying from Logan International Airport (BOS) to Luis Munoz Marin International Airport (SJU): what you need to know

  • Around 4 hours 5 minutes is how long you'll be traveling on a direct flight from Logan International Airport to Luis Munoz Marin International Airport.

  • Boston and San Juan share the UTC-4 timezone. That means there's no time difference to consider.

  • You can choose from 40 weekly Logan International Airport to Luis Munoz Marin International Airport flights. The 06:15 departure with JetBlue Airways is the earliest flight you can take. Spirit Airlines operates the last service of the day at 23:22.

  • For a stress-free journey, arrive at the airport two hours ahead of international flights and one hour before domestic departures. This way, you can comfortably board your BOS to SJU flight.

  • Flying during a peak month such as August? School holidays and other high seasons can result in longer queues and delays at security. Play things extra safe and arrive up to four hours ahead of an international flight and two hours before domestic departures.

  • With direct flights from Logan International Airport to Luis Munoz Marin International Airport available through various airlines, getting to San Juan (and then other destinations in Puerto Rico) is a snap. You can travel nonstop with these carriers:

  • The airline most travelers prefer to fly with on this route is JetBlue Airways.

  • With 72.5% of its services arriving as planned, Delta Air Lines is the most punctual carrier operating BOS to SJU flights.

  • If you want to include a stop along the way, simply uncheck 'Direct flights only' when searching for your ticket from Logan International Airport to Luis Munoz Marin International Airport. Here are the top stopovers between BOS and SJU:

    • John F. Kennedy International Airport

    • Philadelphia International Airport

    • Punta Cana International Airport

How to find the cheapest flights from Logan International Airport (BOS) to Luis Munoz Marin International Airport (SJU)

  • $116 is currently the best price for a one-way Logan International Airport to Luis Munoz Marin International Airport flight. Return flights start at $266. These prices may change based on availability and demand.

  • To pick up cheap tickets from BOS to SJU, book your journey six months ahead of your departure.

  • The cheapest month for flights from Logan International Airport to Luis Munoz Marin International Airport is May. Use the 'Whole month' tool to find the lowest airfares if you have a flexible schedule.

  • Getting your hands on cheap flights from BOS to SJU couldn't be easier with Price Alerts. Simply create one of these automatic alerts and we'll let you know as soon as there's a better deal.

  • Discover the right flight for you by using the filters. To see the 'Cheapest,' 'Fastest' or 'Best' flights from Logan International Airport to Luis Munoz Marin International Airport, use the 'Sort by' function. You can also filter results by arrival and departure times, airline, and journey duration.

Handy information about Logan International Airport (BOS)

  • You'll find BOS at One Harborside Drive.

  • When it comes to Logan International Airport's on-time performance, data shows 73.94% of flights complete their journey on time.

  • Central Boston to Logan International Airport is approximately 5 kilometers. Depending on traffic, it'll take you about 10 minutes to get there if you're catching a cab, ride-sharing or driving.

  • The journey when using public transport usually takes 25 minutes.

  • Searching for a convenient hotel close to BOS? If you're catching an early flight from Logan International Airport to Luis Munoz Marin International Airport, these stays will put you moments from your departure gate:

Arriving at Luis Munoz Marin International Airport (SJU)

Getting from Luis Munoz Marin International Airport (SJU) to central San Juan

  • From Luis Munoz Marin International Airport, San Juan is approximately 8 kilometers away. It takes around 10 minutes to reach the center driving.

  • Getting there by public transport will take you roughly 55 minutes.

When to fly to Luis Munoz Marin International Airport (SJU)

  • It's time to work out your travel dates for your flight from Logan International Airport to Luis Munoz Marin International Airport. July is the busiest month to visit San Juan. If you're after a quieter vibe, go in May.

  • Lock in your flight from Logan International Airport to Luis Munoz Marin International Airport for September if you'd like to go to San Juan during its warmest month. Expect temperatures of between 23ºC (73ºF) and 33ºC (91ºF).

  • February has average temperatures of between 20ºC (68ºF) and 28ºC (82ºF). Look for cheap tickets from BOS to SJU sometime then if you want to travel in cooler conditions.

Explore more of Puerto Rico

  • Bayamon is just one of the many cities in Puerto Rico waiting to be discovered after you've seen San Juan. Around 10 kilometers away to the west, top sights here include Plazoleta Ignacio Zorrilla, La Plaza de la Bomba Puertorriqueña, Monumento a los Trovadores and Parque Palm Court.

  • If you want to check out another side of Puerto Rico, head for Carolina, about 11 kilometers east of San Juan. Isla Verde Beach, Parque de Doble A Roberto Clemente Walker and Drone Zone Track are among the biggest draws.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.