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How many people can an airplane carry? Depends on the aircraft. Some planes such as the 787 and 320 can carry up too 250 passengers, While an Embraer 145 can only hold about 25-45.
For planes with up to 19 passenger seats, no flight attendant is needed. For larger planes, one flight attendant per 50 passenger seats is needed. The majority of flight attendants for most airlines are female, though a substantial number of males have entered the industry since 1980.