It follows alliances more than price. Terminal 1 is the Lufthansa Group’s base — Lufthansa, SWISS and Austrian Airlines — alongside British Airways, Turkish Airlines and Ryanair (41 airlines on the official list). Terminal 2 is Air France’s home, with its SkyTeam partners Delta and KLM, plus easyJet, Emirates and Etihad (32 airlines on the official list). Check your ticket if your airline isn’t one of these.