Boston (BOS) to Praia (RAI): 3,387 miles (5,451 km) great-circle, about 7h 15m nonstop by our estimate. Cheapest fare observed: $916 round-trip on TAP Portugal, with 2 stops, departing May 16, 2026.
$916 round-trip, TAP Portugal TP228, departing 2026-05-16 at 23:15, returning 2026-06-07. The recorded itinerary left on a Saturday, returning on a Sunday 22 nights later; the fare was observed 21 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $916, it ranked 22nd of the 30 round-trip fares we recorded from BOS (median $623). That is 27.0 cents per great-circle mile (round-trip price over one-way distance), above the BOS median of 19.1 cents across 30 round-trip routes.
Routes from BOS of similar length: Casablanca (3,434 mi) at $931 and Paris (3,439 mi) at $613.
BOS to RAI is the only one of 30 BOS routes where TAP Portugal priced cheapest. It is the 12th longest of the 30 routes we track from BOS.
Of 2 departure airports with a fare to Praia, Boston (BOS) ranked 2nd at $916. Lowest: $356 from Lisbon (LIS); highest: $916 from Boston (BOS); 1 nonstop. Cheapest-fare airlines (routes): TAP Portugal (2).
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/New_York, Atlantic/Cape_Verde; flight time is our estimate.