At Portland International Airport, British Airways operates from Concourse D, a modern and traveler-friendly terminal equipped with dining, shopping, and lounge options. Passengers can check in at the designated British Airways counters and proceed through security with ease. It is recommended that travelers arrive at least three hours before departure to allow ample time for check-in, baggage drop, and security screening. https://airportsterminalhub.com/airlines/british-airways/british-airw...