Tigerair Taiwan have ”One for free campaigns by the reservation of four people” on November 22, 2016.
・The Japanese route
Sale period: Nov 22, 2016 at 11:00 − Dec 5, 2016 at 23:59 (JST)
Travel period: Nov 22, 2016 – Jan 31 2017.
To receive the campaign, enter the promotional code “WATANABE” at the time of reservation.
Four people are the number of people that matched a child with an adult. (the infant is excluded)
Campaign applies only from PC version website.