World-crossing

"Blue Fairy: You will never make it to that world. Rumplestiltskin: Oh, I’ll find a way. There must be other paths."

- The Blue Fairy and Rumplestiltskin World-crossing, also known as Portal Jumping in some cases, is a magical ability featured on ABC's Once Upon a Time and Once Upon a Time in Wonderland. It first appears in the first episode of the first season of Once Upon a Time.

Known Ways to Cross Worlds

 * Ale of Seonaidh (a soul from the Underworld to another realm)
 * Apprentice's Portal Spell (can reach the Land Without Magic)
 * Cyclone (from a magical realm, like Oz, to another)
 * Dark Curse (Fairy Tale Land to Storybrooke and back if undone)
 * Darkness (from wherever to the Vault of the Dark One)
 * Fiery Cave (from the Underworld to a "Worse Place" or Mount Olympus)
 * Furies ability (from the Underworld to another realm and back)
 * Genie's Wish
 * God ability (wherever)
 * Heroes and Villains book
 * Combined with magic quill
 * Combined with magic key
 * Jefferson's Hat (one magical realm to another)
 * Door to the Land Without Color
 * Door to Victorian England
 * Oz Curtains Portal (to Oz and back)
 * The Hat's Looking Glass (to Wonderland and back)
 * Lake Nostos
 * Combined with dehydrated Magic Bean
 * Combined with Magic Wardrobe ashes + Enchanted Compass
 * Looking Glass (Fairy Tale Land to Wonderland, rarely back)
 * Magic Bean (can reach magical realms and the Land Without Magic)
 * Magic Doors (can reach magical realms and the Land Without Magic)
 * Magic Wardrobe (Fairy Tale Land to Land Without Magic)
 * Mermaids ability (can reach magical realms)
 * Pegasus Sail (can be used from Fairy Tale Land to Neverland)
 * Rabbit Holes (one magical realm to another)
 * Shadow flight (can reach magical realms and the Land Without Magic)
 * Slippers (one magical realm to another)
 * Silver Slippers
 * Ruby Slippers
 * Sleeping Curse (sends victim's soul to the Netherworld)
 * Summoning Ceremony (a soul from the Underworld to any realm)
 * Teleportation (rarely, one magical realm to another)
 * Time Travel Spell (from one time to another, and can cross realms)
 * Underworld portal combined with blood of someone who has come back to life (to the Underworld or back)

Appearances
Note: "Archive" denotes archive footage.