The surabhi cows and all the demigods and their mothers joined the heavenly king, Indra, in worshiping Lord Kṛṣṇa by bathing Him with Ganges water and the milk of the surabhis. Thus Govinda, Lord Kṛṣṇa, was pleased with all of them. The residents of all higher planetary systems, such as Gandharvaloka, Vidyādharaloka, Siddhaloka and Cāraṇaloka, all combined and glorified the Lord by chanting His holy name as their wives and damsels danced with great joy.
(Krsna Book).

After this, the inhabitants of Siddhaloka, as well as the inhabitants ofVidyādhara-loka, transformed the great sage Kapila into a calf, and making the whole sky into a pot, they milked out specific yogic mystic powers, beginning with aṇimā. Indeed, the inhabitants of Vidyādhara-loka acquired the art of flying in the sky.
The inhabitants of both Siddhaloka and Vidyādhara-loka are naturally endowed with mystic yogic powers by which they not only can fly in outer space without a vehicle but can also fly from one planet to another simply by exerting their will. Just as fish can swim within water, the residents of Vidyādhara-loka can swim in the ocean of air. As far as the inhabitants of Siddhaloka are concerned, they are endowed with all mystic powers. The yogīs in this planet practice the eightfold yogic mysticism—namely yama, niyama, āsana, prāṇāyāma, pratyāhāra, dhāraṇā, dhyāna and samādhi. By regularly practicing the yogic processes one after another, the yogīs attain various perfections; they can become smaller than the smallest, heavier than the heaviest, etc. They can even manufacture a planet, get whatever they like and control whatever man they want. All the residents of Siddhaloka are naturally endowed with these mystic yogic powers. It is certainly a very wonderful thing if we see a person on this planet flying in the sky without a vehicle, but in Vidyādhara-loka such flying is as commonplace as a bird's flying in the sky. Similarly, in Siddhaloka all the inhabitants are great yogīs, perfect in mystic powers.
(Srimad Bhagavatam------4:18:19------translation and purport).

Below Rāhu by 10,000 yojanas (80,000 miles) are the planets known as Siddhaloka, Cāraṇaloka and Vidyādhara-loka.
(Srimad Bhagavatam------5:24:4-------translation).

Being praised by great sages and saints and by the inhabitants of Siddhaloka and Cāraṇaloka, Citraketu, the most powerful mystic yogī, wandered about enjoying life for millions of years. With bodily strength and senses free from deterioration, he traveled within the valleys of Sumeru Mountain, which is the place of perfection for various kinds of mystic power. In those valleys he enjoyed life with the women of Vidyādhara-loka by chanting the glories of the Supreme Lord, Hari.
It is to be understood that Mahārāja Citraketu, although surrounded by beautiful women from Vidyādhara-loka, did not forget to glorify the Lord by chanting the holy name of the Lord. It has been proved in many places that one who is not contaminated by any material condition, who is a pure devotee engaged in chanting the glories of the Lord, should be understood to be perfect.
(Srimad Bhagavatam------6:17:2-3-------translation and purport).

The inhabitants of Vidyādhara-loka prayed: Our acquired power to appear and disappear in various ways according to varieties of meditation was banned by that foolish Hiraṇyakaśipu because of his pride in his superior bodily strength and his ability to conquer others. Now the Supreme Personality of Godhead has killed him just as if the demon were an animal. Unto that supreme pastime form of Lord Nṛsiṁhadeva, we eternally offer our respectful obeisances.
(Srimad Bhagavatam------7:8:46-------translation).