$143 Cheap Flights from Boston (BOS) to San Juan (SJU)

You can find cheap one-way flights from $143 and cheap return flights $276 Boston, MA (BOS-Logan Intl.) to San Juan (SJU-Luis Munoz Marin Intl.) with Expedia. One-way flights usually range from $144 to $1020, and return flights typically cost between $330 and $4082. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Boston, MA (BOS-Logan Intl.) to San Juan (SJU-Luis Munoz Marin Intl.) ticket fares go up or down.

*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.

January is the cheapest month to fly from Boston to San Juan, with average return fares around $334. This is about 15% lower than the average price throughout the year, as demand decreases after the holiday season. Other budget-friendly months include February and October.

*Averages based on flights available on Expedia in the last year.

4 airlines operate nonstop service from BOS to SJU:

• JetBlue Airways operates around 31 direct flights from BOS to SJU every week
• Delta operates around 8 direct flights from BOS to SJU every week
• Spirit Airlines operates around 10 direct flights from BOS to SJU every week
• Frontier Airlines operates around 7 direct flights from BOS to SJU every week

JetBlue Airways is one of the cheapest airlines offering nonstop flights from Logan Intl. (BOS) to Luis Munoz Marin Intl. (SJU), with round-trip tickets starting from around $264. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.

*Prices based on flights available on Expedia in the last year.

To find a cheap flight from Boston, MA (BOS-Logan Intl.) to San Juan (SJU-Luis Munoz Marin Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.

The best airline to fly with from Boston, MA (BOS) to San Juan (SJU) will differ from traveler to traveler. If you like to fly early, Delta offers early morning flights. If price is the most important factor, Spirit Airlines typically offers the lowest fares. American Airlines offers the most daily flights from BOS to SJU, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.

The best time to fly from Boston (BOS) to San Juan (SJU) is typically in January or October. During these months, you can find return flights at around $334, making them the cheapest options. January is particularly appealing as it follows the holiday rush, while October offers pleasant weather and fewer crowds, allowing for a more enjoyable travel experience.

*Prices based on flights available on Expedia in the last year.

On average, there are around 7 nonstop flights per day from Logan Intl. (BOS) to Luis Munoz Marin Intl. (SJU). For more options, look at flights that include layovers.

The earliest flight from Logan Intl. (BOS) to Luis Munoz Marin Intl. (SJU) typically departs at around 12:15 AM, operated by United. This seasonal service is available in December, allowing you to enjoy an early start to your trip to San Juan. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.

The most popular departure times for flights from Boston (BOS) to San Juan (SJU) are from 6am to 9am. About 36% of passengers prefer this time window. Many major carriers, including American Airlines, Delta and United Airlines, offer flights during this window. This timing is popular because it allows you to arrive in San Juan with plenty of time to enjoy the day.

Flying nonstop from BOS to SJU takes around 4 hours, with the route covering approximately 1,679 miles. Flights with a layover typically take 3 hours 20 minutes longer than direct options. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.

You can fly first class between BOS and SJU. First class cabins are available on:

• United Airlines
• Delta Air Lines
• Spirit Airlines

A direct, return business class ticket from Boston (BOS) to San Juan (SJU) typically costs between $1,280 - $2,048. A non-stop, one-way business class flight is usually around $481 - $603. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Boston, MA (BOS-Logan Intl.) to San Juan (SJU-Luis Munoz Marin Intl.) if you opt for a connecting flight.

*Prices based on flights available on Expedia in the last year.

It's easy to earn miles on a Boston, MA (BOS-Logan Intl.) to San Juan (SJU-Luis Munoz Marin Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.

*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.

From Logan Intl. (BOS), you can fly into Luis Munoz Marin Intl. (SJU) to reach San Juan. Some flights may connect through major hubs like Liberty Intl. (EWR), O'Hare Intl. (ORD), Washington Dulles Intl. (IAD) before reaching San Juan. Compare routes and airports on Expedia to find the best flight options for your travel plans.

Typically, booking a last minute flight from Boston, MA (BOS-Logan Intl.) to San Juan (SJU-Luis Munoz Marin Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.

Securing a Boston, MA (BOS-Logan Intl.) to San Juan (SJU-Luis Munoz Marin Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.

If you booked your Boston, MA (BOS-Logan Intl.) to San Juan (SJU-Luis Munoz Marin Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.