I know this topic is kinda old, but this is relevant:
the Eon Ticket is available via Mystery Gift.
KOTAKU LINK!Instructions:
Boot up AR/OS, go to Mystery Gift > Receive Gift > Get with Code. Use "POKEMON380381" for Europeans, "2015LATIOSLATIAS" for North Americans. You should get the Eon Ticket at a PokéCenter from one of them Delivery girls. Go to Petalburg, talk to Dad, then you'll go to a ferry in Lilycove to an island with the appropriate legendary. Ya'll got until
March 2nd though.
While on the subject, I think there's another set of events for both Europe and NA. Do the same as above, but use the codes "POKEMON497", "POKEMON500", and "POKEMON503" to get Serperior, Emboar, and Samurott. They've got special abilities and some good moves.