Question

Could I transfer Pokémon in X/Omega Ruby to Moon using Pokémon Bank?

Answer 1

Yes. You'll need to put them in PokéBank from XY/ORAS first, then switch cartridges and take them out and into Sun/Moon. If one of your games is a digital copy, obviously you do not need to remove a cartridge.

Source: I dun it

Comments

Thanks! And to get Pokémon Bank on my 3DS, do I just buy it (pay the $5) on Nintendo eShop?

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Yep, and the subscription lasts a year. After the year is up you either pay again or don't. If you do not pay, you cannot deposit more Pokémon. However, there is a (rather long) grace period where you can still take Pokémon that are already in the Bank out.