Valiance Keep Riding Trainer Location, WoW Wotlk

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

Orgrimmar Skyway, WoWWiki

Wrath Classic Cold Weather Flying guide

Dalaran Cold Weather Flying Trainer Location, WoW Wotlk

How To Unlock Flying In Northrend--Tome of Cold Weather Flying

Get A FLYING Mount FOR FREE on Wrath of the Lich King

Flight in Pre-Patch Outland

From where to get a free Flying Mount at level 77, WoW Wotlk

You must train pathfinder now for WoD/Draenor similar to Cold

18 Tips for Leveling in Northrend in Wrath of the Lich King