While most flying mounts can use Skyriding in The War Within, a handful don't currently have this feature available. We prepared a list showing every mount that cannot use Skyriding. Note that this is still Alpha and subject to change before launch. All 464 Mounts Able to Skyride in The War Within Flying Mounts that Cannot Skyride in The War Within Alpha Note that some of those will likely receive Skyriding abilities before TWW launch, like Ardenweald Wilderling or Ravenous Black Gryphon, since they share base models with other mounts that already have Skyriding enabled.
However, others like Amalgam of Rage likely won't since they have a unique model. Blue Old God Fish Mount Goblin Surfboard Red Old God Fish Mount Amalgam of Rage Ardenweald Wilderling Armored Golden Pterrordax Ash'adar, Harbinger of Dawn Astral Emperor's Serpent August Phoenix Autumnal Wilderling Bestowed Ohuna Spotter Coral-Stalker Waveray Crimson Gladiator's Drake Dashing Windsteed Daystorm Windsteed Draconic Gladiator's Drake Duskwing Ohuna Feathered Windsurfer Forest Windsteed Golden Discus Harbor Gryphon Heartseeker Mana Ray Imagiwing Kua'fon Liberated Slyvern Majestic Azure Peafowl Mogu Hazeblazer Obsidian Gladiator's Slitherdrake Otterworldly Ottuk Carrier Pearlescent Goblin Wave Shredder Ravenous Black Gryphon Red Flying Cloud Sky Surfer Summer Wilderling Temperamental Skyclaw Twilight Sky Prowler Underlight Corrupted Behemoth Underlight Shorestalker Verdant Gladiator's Slitherdrake Voyaging Wilderling Winter Wilderling Zenet Hatchling