section_path: Operations/Terminal 4
section_name: Terminal 4
paragraph_text: Terminal 4
  
  Opened in 1986, Terminal 4 has 22 gates. It is situated to the south of the southern runway next to the cargo terminal and is connected to Terminals 2 and 3 by the Heathrow Cargo Tunnel. The terminal has an area of 105,481 m 2 (1,135,390 sq ft) and is now home to the SkyTeam alliance; except Scandinavian Airlines which uses Terminal 2, and China Airlines, Aeroméxico, Delta Air Lines, Middle East Airlines, and Virgin Atlantic which use Terminal 3. This terminal is also the base for several Oneworld carriers such as Malaysia Airlines, Qatar Airways, and Royal Air Maroc, besides few unaffiliated carriers such as Etihad Airways, Gulf Air, and Royal Brunei Airlines. It has undergone a £200 million upgrade to enable it to accommodate 45 airlines with an upgraded forecourt to reduce traffic congestion and improve security. Most flights using Terminal 4 are those from/to East Europe, Central Asia, North Africa and the Middle East as well as a few flights from/to Europe. An extended check-in area with renovated piers and departure lounges and a new baggage system were installed, and four new stands were built to accommodate the Airbus A380; Qatar Airways operates regular A380 flights.