Police say the incident is not believed to have a link to terror.
British Airways told state police that a woman about 30 years old tried to open the exit door Tuesday on Flight 213. The flight landed about a half-hour ahead of schedule at Boston's Logan International Airport at 1:30 p.m. A spokesman for state police says troopers have taken the passenger into custody.
State police tweeted: "No known nexus to terrorism at this time."
In a statement, British Airways called the passenger "unruly."
This story has been corrected to show authorities now say the woman tried to open the exit door, not the cockpit door.