International flights are air travel routes that connect different countries. These flights allow passengers to travel across borders, often covering long distances. They are operated by various airlines and can vary in duration, depending on the locations involved. Passengers typically need a valid passport and may require a visa to enter their destination country. Before boarding an international flight, travelers must go through customs and immigration checks. This process ensures that all passengers meet the entry requirements of the destination country. Additionally, international flights often have different baggage regulations and may offer in-flight services tailored to long-haul travel, such as meals and entertainment.