 Terminals 1, 2 and 3 are adjacent terminals that are home to SkyTeam and Star Alliance airlines.Terminal 4 is home to Iberia, its franchise Air Nostrum and all Oneworld partner airlines.Gate numbers are continuous in terminals 1, 2 and 3 (A1 to E89), but are separately numbered in terminal 4 (H, J, K and M, R, S, U in satellite building).