Of course you can, but if you are at the very beginning it can't be given to you as there is still 200 other passengers to serve. You might have to wait for the second meal until everyone else is served. Many airlines do not load many if any extra meals in economy class.

While airlines are only required to provide the number of meals specified for your ticket class, you can often receive a second meal if there is surplus inventory. After the initial service is complete, flight attendants typically know how many extra trays remain. If you are still hungry, politely asking an attendant if there are any "spare meals" once the aisles are clear is the best approach. On long-haul international flights, many airlines also offer a "secret menu" or a basket of snacks in the galley that passengers can access between formal services. In 2026, many carriers have expanded their pre-order and "special meal" options (like gluten-free or low-sodium), and if a passenger fails to show up for their flight, their pre-ordered special meal often becomes a "spare" that can be requested. However, during high-demand periods or on fully booked flights, extra meals are rare, so it is always wise to pack some high-protein snacks as a backup to ensure you stay satiated during your journey.