You can't. Maybe an event.
beat the elite 4 and steven to get the ticket
i don't know about it. I think there's a guy that is fat named Mr.Bonker
You can get two ferry tickets:The ticket for the SS Tidal is obtained by completing the Delta Episode.You can get the Eon ticket by Streetpassing someone with Pokemon Alpha Sapphire or Omega Ruby.
Defeat Pokemon Leauge Champion then you wait to the credits finish then you automatically go back to your house then you go downstairs then your dad gives you a ticket.
Master Code for Ruby: 0000B138000A 1003A82A0007 Eon Ticket: 82025CE40113 Southern Island Activation: 32026A5E0088 I am sure u dont want ss ticket code
you have to mix records with sapphire/ruby and then you get the ticket!!!!!!!!!!!!
There is no use for the SS Ticket in Pokémon Platinum.
Go to slateport city or lilycove city and find the SS Tidal boat show the lady the ticket then choose southern island to reach an island where latios is.
you have to beat the elite 4 & lance then get the ss ticket. the ss anne will take you to vermilion city. you travel to fuchsia and go to the pal park. you have to have sapphire, ruby, or emerald(gba games) and migrate torchic. I'm not sure it will work, but it should help. ;)
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the sailing ship ticket that takes you to places like the battle frontier
Sorry, to my current knowledge, there is no such thing as an "Infinity Ticket".