Ключевые слова: 2021, agency, air ticket, airplane, airplane ticket, airport, airport terminal, background, bag, baggage, business, distance, epidemic, europe, expectation, fear, finance, flight, flu, happy, health, holiday, illness, journey, lifestyle, medicine, passenger, passport, prevention, protection, save fly, suitcase, suitcases, ticket, tourism, tourist, transport, traveling, trip, vaccination passport, virus, world, world travel,