hěn duō / háng kōng / gōng sī / huì / zài / jié jià rì / tí jià / suǒ yǐ / tí qián / dìng piào / gèng / huá suàn

很多航空公司会在节假日提价，所以提前订票更划算。

Many airlines raise prices during holidays, so it's more cost-effective to book tickets in advance.