Why are air tickets so expensive in February?

February is the Spring Festival travel period. According to relevant information, many people celebrate the New Year in February during the Spring Festival travel period, so the price is higher. If you fly from the mainland to the coast at this time, it is very cheap. After the Spring Festival, a large number of migrant workers return to the coast, so after the New Year, fly from the mainland to the coast Air ticket prices will also be very high.