$1,571 Cheap TAP Portugal flights Boston (BOS) to São Tomé Island (TMS)

Use the "Price (lowest to highest)" filter on Expedia to search for cheap TAP Portugal round-trip flights from $1,720 from BOS to TMS. Affordable one-way fares from $1,571 are also available.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

To get cheap flights from BOS to TMS with TAP Portugal, start searching about one month before your intended departure. You can save 17% when you lock in your international tickets 18 to 29 days ahead instead of booking four to five months in advance. Want another tip? Booking on Sunday offers average savings of 17% compared to Friday (the most expensive day).**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.

Search TAP Portugal's earliest flights from BOS to TMS by checking the "Early Morning" and "Morning" filters. Not only will you arrive sooner, early departures also have a 20% less chance of being canceled.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.