Cheap Flights from St. Thomas (SPB) to San Juan (SJU)

Popular airlines from St. Thomas (SPB-St. Thomas Seaplane Base) to Luis Munoz Marin Intl. Airport (SJU)

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Flights from St. Thomas (SPB) to San Juan (SJU)
Origin airport
St. Thomas Seaplane Base
Destination airport
Luis Munoz Marin Intl.
Distance
70 mi

St. Thomas to San Juan Flights

The cheapest times to fly from St. Thomas to San Juan

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Thomas to San Juan are during the month of . You can find some of the cheapest flights from St. Thomas to San Juan with Expedia's search tool and vast selection of airlines.

The best time to book a flight from St. Thomas to San Juan

Sunday is one of the best days to book for cheap flights from St. Thomas to San Juan: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from St. Thomas to San Juan

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Thomas to San Juan in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Thomas to San Juan flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Thomas to San Juan airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

Is it cheaper to buy a plane ticket from St. Thomas Seaplane Base Airport (SPB) to Isla Verde Intl. Airport last minute?
Booking your journey from St. Thomas Seaplane Base to SJU at the last minute could save you cash if you luck out and find a good deal. However, airfares generally don’t get cheaper closer to the departure date. If you take a wait-and-see approach, flights could also be sold out or the best seats long gone. If you’d rather not take any chances, book well in advance of the date you want to leave. Keep in mind that some of the best deals can be found up to a year in advance. If your preferred airline hasn’t released tickets yet, check back regularly as offers are constantly updated on Expedia.
What airports do you fly into for San Juan from Charlotte Amalie?
From Charlotte Amalie, you can connect to San Juan via Luis Munoz Marin Intl. Airport (SJU), Antonio Rivera Rodriguez Airport (VQS) and Mercedita Airport (PSE). Do some research into which terminal is the most convenient for you before making your decision. If you choose Luis Munoz Marin Intl. Airport (SJU), it’s approximately 7 mi east of the downtown area. Use the dollars you save when booking your seat with Expedia to explore the city’s well-known sights, such as San Juan Gate and La Fortaleza.
Can I change the date of my flight from SPB to Luis Munoz Marin Intl. Airport (SJU)?
Life can throw a spanner in your plans, so Expedia is here to help make things as simple as possible. First, access your St. Thomas Seaplane Base Airport (SPB) to Isla Verde Intl. Airport itinerary through the Expedia Trips portal and check the ticket rules about change fees or other charges. If you purchased your airfare in the last 24 hours, some carriers will allow you to cancel for free and book new flights. If you booked more than 24 hours ago, get in touch with us through our Customer Service portal to see how we can help.

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