Informal way to say, "excellent; correct." * /"First we'll go up the Sears Tower, and then we'll take a night sightseeing tour on the lake," Fran said. "That's the ticket!" Stan, an old inhabitant of Chicago, replied./
THAT'S THE TICKET!
Meaning of THAT'S THE TICKET! in English
Dictionary of English idioms . Словарь английских идиом. 2012