Online check-in should be done and the boarding pass should be printed or downloaded to your smartphone to save time at the airport. The carry-on bag should be packed wisely, ensuring that all essentials like medications, a change of clothes, and any important documents are included in case the checked luggage gets lost. Early arrival at the airport should be ensured to allow plenty of time for security checks and any unexpected delays. To prevent issues like deep vein thrombosis and to make the journey more comfortable, staying hydrated and moving around during the flight is recommended.