In the UK, most major scheduled airlines—such as British Airways, Virgin Atlantic, and major international carriers like Emirates or United—typically release their flight schedules and tickets 330 to 365 days (about 11 months) in advance. This window allows travelers to plan a full year ahead, which is particularly useful for securing "award" seats using miles or points, which tend to disappear quickly. Budget carriers like easyJet, Ryanair, and Jet2 operate differently; they release their "blocks" of flights for specific seasons (Summer, Winter, Spring) at different times, often ranging from 6 to 9 months ahead. For the best value, travel experts often suggest the "Goldilocks Window": booking 2 to 8 months in advance for international trips and 1 to 3 months for domestic hops. While you can book a year out, you might pay a premium for that certainty, as airlines haven't yet begun to discount seats to fill the plane. If you are traveling for a major holiday like Christmas or school half-terms in 2026, booking as soon as the window opens is often the only way to avoid sky-high prices.