Troopers took the woman, who is about 30 years old, into custody after the aircraft landed at Logan International Airport. There was no indication of any terrorism tie to her actions, said state police spokesman David Procopio in an e-mail.
Police identified the flight number as 213, which left London's Heathrow airport at 6:57 a.m. ET (1157 GMT).
British Airways, which is part of International Consolidated Airlines Group SA, said the crew had asked police to meet the flight due to an unruly passenger.
An earlier state police report that the woman had attempted to open the cockpit door was inaccurate, police said.
Live television images showed the aircraft parked at a jetway at Boston Logan International Airport.
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The FBI said it was responding to the incident.
