British Airways OSL Terminal The primary terminal for foreign flights at Oslo Airport Gardermoen (OSL) is Terminal 2, where British Airways is based. Numerous services are available to passengers, such as rapid security clearance, baggage drop, and special check-in offices. In addition, the terminal has food options, duty-free shopping, and cozy lounges, including business class and frequent flyer access to premium lounges. British Airways guarantees a smooth, customer-focused experience by operating frequent flights to locations such as London Heathrow (LHR), offering comfort and convenience to all travelers leaving Oslo.