Whether drinks are free on a flight depends entirely on the airline's business model and the length of the journey. Full-service international carriers (like Emirates, Delta, or British Airways) almost always provide a wide range of complimentary beverages, including water, soda, juice, coffee, and often wine or beer, especially on long-haul transoceanic routes. In contrast, Low-Cost Carriers (LCCs) such as Spirit, Ryanair, or Frontier operate on a "unbundled" pricing model where nothing is included in the base fare; on these flights, even a cup of water must be purchased. Domestic flights within the US or Europe on "mainline" carriers often provide free non-alcoholic drinks but charge for "premium" snacks or alcohol. In 2026, many airlines have also moved toward digital ordering systems where you can see the "complimentary" vs "paid" status of items on your seatback screen or personal device. Always check the "In-flight Services" section of your booking to avoid "sticker shock" when the beverage cart arrives.