Yes, British Airways (BA) utilizes Terminal 3 at London Heathrow (LHR) for a select number of its short-haul and long-haul routes, even though the majority of its operations are centered in Terminal 5. BA's presence in Terminal 3 is primarily for specific "point-to-point" destinations and to facilitate smoother connections with its oneworld partners like American Airlines, Qantas, and Cathay Pacific, who are also based there. As of early 2026, BA routes operating out of Terminal 3 typically include flights to cities like Phoenix, Algiers, and various seasonal European destinations. Passengers flying BA from Terminal 3 have access to the British Airways Galleries Club Lounge or, if they have the appropriate status/ticket class, the highly-regarded lounges of partner airlines. It is crucial for travelers to check their boarding pass or the Heathrow website before heading to the airport, as BA does not offer a "shuttle" for those who arrive at the wrong terminal; moving between Terminal 5 and Terminal 3 requires taking the Heathrow Express or Elizabeth Line, which can add 20 to 30 minutes to your transit time.