If so, how?
Lucky Egg can be found as a wild hold item on Chansey. Although you can't encounter Chansey though normal means in X and Y, it does appear in the Friend Safari. If you have a Normal Safari constraining Chansey, you can simply get a Pokémon with the Ability Frisk and the move Thief, and their Lucky Eggs. I recommend having a Pokémon with Compound Eyes at the front of the party, to raise the chance of getting an item.
4 ways. 1. Chansey in safaris 2. Cloning/hacking 3. Graffiti game in Pokemon GL 4. Giving your lucky egg to someone else, restarting, getting the Lucky Egg again, and then trading it back from the person. commented 50 minutes ago by Fated Fathom ♠
A few more ways mentioned by Qwerty