$1,309 Cheap TAP Portugal flights Washington (DCA) to São Tomé Island (TMS)

Landing cheap one-way TAP Portugal flights from DCA to TMS from $1,309 on Expedia is a cinch — just filter by "Price (lowest to highest)." Or check out our affordable return fares from $2,111 for your next adventure.**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 discover cheap flights from DCA to TMS with TAP Portugal, start searching about one month before your planned 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 DCA to TMS by selecting the "Early Morning" and "Morning" filters. Not only will you arrive at your destination 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.