On almost all full-service international airlines in 2026, all alcohol is complimentary in First Class and Business Class, including premium spirits, fine wines, and top-tier champagne (like Dom Pérignon or Krug). This service begins even before takeoff with a "pre-departure beverage" and continues throughout the flight with "on-demand" dining. On U.S. domestic flights, First Class passengers also receive free alcohol, though the selection is typically more "standard" (e.g., mid-shelf bourbon and sparkling wine rather than vintage champagne). However, some "budget" first-class products on regional carriers or "low-cost" long-haul airlines may have a more limited selection. A high-value "pro-tip" for 2026 is that while the alcohol is free, flight attendants are legally required to manage "responsible service"; if a passenger shows signs of intoxication, the crew can and will stop serving alcohol to maintain cabin safety. Furthermore, even in First Class, it remains a federal crime to consume your own alcohol that you brought on board; all drinks must be served by the airline staff.