Boston-bound flight makes emergency landing in Portugal after fumes detected in cabin

A Delta Air Lines flight from Barcelona to Boston was diverted to Portugal after smoke filled the cabin, sending three people to the hospital. A Boston-bound Delta flight from Barcelona was forced to make an emergency landing in Porto, Portugal, Sunday night after fumes were detected in the cabin, the airline said.Delta flight 251 departed Barcelona at 9:15 a.m. The flight was scheduled to land at Logan International Airport at 5:15 p.m.