Yes, the British Airways Executive Club is completely free to join for anyone over the age of 18 (and children can be added via a Household Account). In 2026, it remains one of the most accessible loyalty programs in the Oneworld alliance. Upon joining at the "Blue" tier, you immediately begin earning Avios (the program's currency) on flights, hotel bookings, and car rentals. These Avios can be redeemed for "Reward Flights," cabin upgrades, or even part-payment for future bookings. While the entry-level membership is free, the real value comes from climbing the tiers to Bronze, Silver, and Gold, which unlock perks like priority boarding, extra baggage allowance, and access to the prestigious BA and Oneworld lounges. Membership is essential for frequent flyers who want to track their travel and maximize the value of their spend across the BA network.