Almost all airlines offer discounts for children. Sometimes such discounts can reach up to 50-60%.
Once you've selected a flight, the system will display flight prices for an infant under 2 years of age (no seat) and for a child under 12 years of age (with a seat) based on the fare for a single adult passenger, with an option to add passengers to the booking.
Please note that if on some flight segment your child turns two but you purchased an infant fare, the child ticket would not be considered valid. The same rules apply for children under 12 years of age.
Please keep these rules in mind during the booking and purchase your tickets based on the child's age at the time and date of the latest departure. To purchase a ticket with a seat for an infant under 2 years of age, you should select a ticket for a child under 12 years of age with a seat.