Srimad-Bhagavatam: Canto 5 - Chapter 1 - Verse 4

Sanskrit:

ततोऽधस्तात्सिद्धचारणविद्याधराणां सदनानि तावन्मात्र एव ॥ ४ ॥

ITRANS:

tato ’dhastāt siddha-cāraṇa-vidyādharāṇāṁ sadanāni tāvan mātra eva.

Translation:

Below Rāhu by 10,000 yojanas [80,000 miles] are the planets known as Siddhaloka, Cāraṇaloka and Vidyādhara-loka.

Purport:

It is said that the residents of Siddhaloka, being naturally endowed with the powers of yogīs, can go from one planet to another by their natural mystic powers without using airplanes or similar machines.