Alliances

The three global airline alliances—Star Alliance, oneworld, and SkyTeam—decide whose lounge you can use, whose award seats you can book with which currency, and which tier benefits you carry across carriers. Each alliance guide in this category covers the live member roster, the tier reciprocity (Silver/Gold, Ruby/Sapphire/Emerald, Elite/Elite Plus), the best frequent-flyer programmes to hold for each, and how to redeem across the network without falling into legacy assumptions. Updated when an airline joins or leaves an alliance.