Do I need to consult the airline for the connecting ticket I bought?

If you want to leave the airport, you must apply for a transit visa in advance. If not, you don't need it. Generally speaking, transit tickets fly from place A to place B, which are divided into several categories: simply transiting Hong Kong or Macao, without Hong Kong and Macao passes and Hong Kong and Macao endorsements. You only need to stay in Hong Kong for 7 days with China passport+joint ticket (travel ticket is also acceptable)+valid visa for a third country (except visa-free/landing visa, but generally acceptable). If it is a joint flight ticket, you don't need a transit visa. You take the transit passage in the transit area, and you don't need to re-enter the customs, so it doesn't involve entry. However, if you need to pick up your luggage, you need to re-enter and leave the country because your luggage needs to pass the security check, so you need to transfer. Most countries don't need the transit sign 1) What is a transit flight? If you buy a ticket in official website, as long as you buy it once, it is a joint ticket. For example, if you buy a ticket from Beijing to Paris at Aeroflot official website and give you a ticket from Beijing to Moscow, theoretically you don't need to apply for a transit visa if you don't enter Singapore. First of all, if you buy a joint flight ticket, you don't need to go through the customs at the transit point to pick up your luggage, so you just need to transfer at the terminal after you arrive in Singapore. If you have luggage, the airline will fly directly to Japan for you: you don't need to stay overnight, but. Airports open all day in Japan: Haneda Airport in Tokyo and Kansai Airport in Osaka, Thailand: transit visas are required for transit. Passengers transfer at Japan International Airport with valid joint tickets. If they don't need to stay overnight, they don't need to apply for transit visas or other types of entry visas; If you need to stay overnight, it depends on whether the airport is open 24 hours a day. It depends on the regulations of third countries in this regard. Some countries do not allow transit without a visa, some countries allow transit at the airport with a connecting ticket, and some even allow transit with a connecting ticket for 24 hours to 7 days. This depends on the first, so you don't need to enter Korea, so you don't need a transit sign or a health code issued by the embassy or consulate in Korea. If the return ticket issued by the agent is the same ticket number, it is a return ticket. You don't need a transfer sign. In addition, for non-connecting flights, Aeroflot is located in the connecting zone.