WoW Classic TBC: How To Unlock Flying In Outland

Flying Mount Trainer Location WoW TBC - Alliance and Horde

Riding Swift Flying Trainer TBC Location WoW (Horde)

How to fly in WoW Classic: flight paths, flying mounts, more - Dexerto

How to Unlock Flying in Burning Crusade Classic--Flying Mount Cost

Some people are saying that Artisan Riding (ie. Epic Flying) isn't cheaper in WotLK but they're forgetting reputation discounts. : r/classicwow

Flying in Burning Crusade Classic: Requirements trainer locations, skill and mount cost - GINX TV

From where to buy Epic Flying Mount (HORDE), WoW TBC

Turbo-Charged Flying Machine Control - Item - TBC Classic

Orgrimmar Skyway, WoWWiki

Turbo-Charged Flying Machine Mount Details and How to get it. - Dungeon Guide