When preparing for a long flight, it's essential to pack smartly and efficiently. Start by selecting a comfortable carry-on bag and familiarize yourself with the airline's baggage restrictions. Ensure you have all necessary travel documents, electronic devices, and a reusable water bottle with snacks. For a comfortable journey, include items like a travel pillow, eye mask, earplugs, and a change of clothes. Don't forget a small toiletry bag, medications, and entertainment options. Keep a pen, notebook, lightweight blanket, and portable charger handy. Bring travel-sized skincare products, valuables, and a reusable shopping bag. Secure your belongings with a travel lock and use packing cubes or ziplock bags to organize your items. Finally, weigh your carry-on and double-check your packing list to avoid carrying unnecessary items.