The list is ordered from the oldest to the most recent announcement made by the Riot staff regarding skin sales.

Pre-Seasons Seasons
Pre-Season One Season One
Pre-Season Two Season Two
Pre-Season Three Season Three
Pre-Season Four Season Four
Pre-Season Five Season Five
Pre-Season Six Season Six
Pre-Season Seven Season Seven
Pre-Season Eight Season Eight
Early Sales


Period Sales Link
November 13
2015
November 16
2015
Nasus PharaohCircle Pharaoh Nasus - 50% off
Taric ArmoroftheFifthAgeCircle Armor of the Fifth Age Taric - 50% off
Master Yi IoniaCircle Ionia Master Yi - 50% off
Akali SilverfangCircle Silverfang Akali - 50% off
[1]
November 17
2015
November 20
2015
Evelynn ShadowCircle Shadow Evelynn - 50% off
Jarvan IV DragonslayerCircle Dragonslayer Jarvan IV - 50% off
Ahri DynastyCircle Dynasty Ahri - 50% off
Urgot BattlecastCircle Battlecast Urgot - 50% off
[2]
November 20
2015
November 23
2015
Lee Sin TraditionalCircle Traditional Lee Sin - 50% off
Volibear NorthernStormCircle Northern Storm Volibear - 50% off
Renekton PoolPartyCircle Pool Party Renekton - 50% off
Kha'Zix GuardianoftheSandsCircle Guardian of the Sands Kha'Zix - 50% off
[3]
November 24
2015
November 27
2015
Yorick UndertakerCircle Undertaker Yorick - 50% off
Graves MafiaCircle Mafia Graves - 50% off
Sejuani DarkriderCircle Darkrider Sejuani - 50% off
Aatrox MechaCircle Mecha Aatrox - 50% off
[4]
November 27
2015
November 30
2015
Lux SorceressCircle Sorceress Lux - 50% off
Sivir BanditCircle Bandit Sivir - 50% off
Nidalee HeadhunterCircle Headhunter Nidalee - 50% off
Elise DeathBlossomCircle Death Blossom Elise - 50% off
[5]
December 1
2015
December 4
2015
Garen SanguineCircle Sanguine Garen - 50% off
Rammus ChromeCircle Chrome Rammus - 50% off
Kog'Maw DeepSeaCircle Deep Sea Kog'Maw - 50% off
Ziggs PoolPartyCircle Pool Party Ziggs - 50% off
[6]
December 3
2015
December 7
2015
Ezreal AceofSpadesCircle Ace of Spades Ezreal - 31% off
Nasus ArchdukeCircle Archduke Nasus - 31% off
Vayne ArclightCircle Arclight Vayne - 23% off
Zilean BloodMoonCircle Blood Moon Zilean - 23% off
Galio DebonairCircle Debonair Galio - 31% off
Udyr DefinitelyNotCircle Definitely Not Udyr - 23% off
Bard ElderwoodCircle Elderwood Bard - 23% off
Jinx FirecrackerCircle Firecracker Jinx - 28% off
Jayce ForsakenCircle Forsaken Jayce - 28% off
Rammus GuardianoftheSandsCircle Guardian of the Sands Rammus - 23% off
Skarner GuardianoftheSandsCircle Guardian of the Sands Skarner - 23% off
Xerath GuardianoftheSandsCircle Guardian of the Sands Xerath - 28% off
Akali HeadhunterCircle Headhunter Akali - 28% off
Varus HeartseekerCircle Heartseeker Varus - 28% off
Mordekaiser KingofClubsCircle King of Clubs Mordekaiser - 31% off
Ashe MarauderCircle Marauder Ashe - 31% off
Warwick MarauderCircle Marauder Warwick - 31% off
Ziggs MasterArcanistCircle Master Arcanist Ziggs - 28% off
Soraka OrderoftheBananaCircle Order of the Banana Soraka - 31% off
Syndra QueenofDiamondsCircle Queen of Diamonds Syndra - 31% off
Fiddlesticks RisenCircle Risen Fiddlesticks - 28% off
Ekko SandstormCircle Sandstorm Ekko - 23% off
Xin Zhao SecretAgentCircle Secret Agent Xin Zhao - 23% off
Lux StarGuardianCircle Star Guardian Lux - 28% off
Amumu SurprisePartyCircle Surprise Party Amumu - 28% off
Annie SweetheartCircle Sweetheart Annie - 31% off
Nami UrftheNami-teeCircle Urf the Nami-tee - 31% off
Nautilus WardenCircle Warden Nautilus - 31% off
Sivir WardenCircle Warden Sivir - 31% off
Katarina WarringKingdomsCircle Warring Kingdoms Katarina - 23% off
Nidalee WarringKingdomsCircle Warring Kingdoms Nidalee - 23% off
Shaco WildCardCircle Wild Card Shaco - 31% off
[7]
December 4
2015
December 7
2015
Gangplank MinutemanCircle Minuteman Gangplank - 50% off
Twitch PickpocketCircle Pickpocket Twitch - 50% off
Sona PentakillCircle Pentakill Sona - 50% off
Zilean ShurimaDesertCircle Shurima Desert Zilean - 50% off
[8]
December 8
2015
December 11
2015
Anivia BirdofPreyCircle Bird of Prey Anivia - 50% off
Kayle BattlebornCircle Battleborn Kayle - 50% off
Janna HextechCircle Hextech Janna - 50% off
Lulu DragonTrainerCircle Dragon Trainer Lulu - 50% off
[9]
December 11
2015
December 14
2015
Ashe SherwoodForestCircle Sherwood Forest Ashe - 50% off
Trundle ConstableCircle Constable Trundle - 50% off
Mordekaiser PentakillCircle Pentakill Mordekaiser - 50% off
Annie ReverseCircle Reverse Annie - 50% off
[10]
December 14
2015
December 19
2015
2015 All-Star Event Bundles (flexible cost):
1. All-Star 1v1 Champion Bundle - 50% off, RP icon 2399 (RP icon 4787 with the champions):
Draven PoolPartyCircle Pool Party Draven
Lucian StrikerCircle Striker Lucian
Ezreal TPACircle TPA Ezreal
Zed ShockbladeCircle Shockblade Zed
Vel'Koz BattlecastCircle Battlecast Vel'Koz
2. All-Star Winner's Bundle - 50% off, RP icon 2699 (RP icon 5042 with the champions):
Lissandra BladeQueenCircle Blade Queen Lissandra
Elise BloodMoonCircle Blood Moon Elise
Zed SKTT1Circle SKT T1 Zed
Kalista BloodMoonCircle Blood Moon Kalista
Blitzcrank iBlitzcrankCircle iBlitzcrank
2. All-Star Playmaker's Bundle - 50% off, RP icon 2211 (RP icon 4047 with the champions):
Azir GalacticCircle Galactic Azir
Sivir WardenCircle Warden Sivir
Gnar GentlemanCircle Gentleman Gnar
Janna FnaticCircle Fnatic Janna
Riven BattleBunnyCircle Battle Bunny Riven
[11]
December 15
2015
December 18
2015
Olaf ForsakenCircle Forsaken Olaf - 50% off
Amumu LittleKnightCircle Little Knight Amumu - 50% off
Zac SpecialWeaponCircle Special Weapon Zac - 50% off
Malphite MechaCircle Mecha Malphite - 50% off
[12]
December 16
2015
December 16
2015
Anivia NoxusHunterCircle Noxus Hunter Anivia - 50% off
Viktor PrototypeCircle Prototype Viktor - 50% off
Teemo ReconCircle Recon Teemo - 50% off
Tristana FirefighterCircle Firefighter Tristana - 50% off
Gragas ScubaCircle Scuba Gragas - 50% off
Miss Fortune SecretAgentCircle Secret Agent Miss Fortune - 50% off
[13]
December 17
2015
December 17
2015
Karma SunGoddessCircle Sun Goddess Karma - 50% off
Lux ImperialCircle Imperial Lux - 50% off
Akali StingerCircle Stinger Akali - 50% off
Shen FrozenCircle Frozen Shen - 50% off
Kennen SwampMasterCircle Swamp Master Kennen - 50% off
[14]
December 18
2015
December 18
2015
Alistar MatadorCircle Matador Alistar - 50% off
Zilean TimeMachineCircle Time Machine Zilean - 50% off
Teemo BadgerCircle Badger Teemo - 50% off
Malphite CoralReefCircle Coral Reef Malphite - 50% off
Caitlyn SheriffCircle Sheriff Caitlyn - 50% off
Gragas VandalCircle Vandal Gragas - 50% off
[15]
December 18
2015
December 21
2015
Karthus StatueofKarthusCircle Statue of Karthus - 50% off
Xerath RunebornCircle Runeborn Xerath - 50% off
Teemo CottontailCircle Cottontail Teemo - 50% off
Veigar SuperbVillainCircle Superb Villain Veigar - 50% off
[16]
December 19
2015
December 19
2015
Corki RedBaronCircle Red Baron Corki - 50% off
Miss Fortune RoadWarriorCircle Road Warrior Miss Fortune - 50% off
Irelia InfiltratorCircle Infiltrator Irelia - 50% off
Vladimir VandalCircle Vandal Vladimir - 50% off
Akali CrimsonCircle Crimson Akali - 50% off
Tristana GuerillaCircle Guerilla Tristana - 50% off
[17]
December 20
2015
December 20
2015
Malphite ObsidianCircle Obsidian Malphite - 50% off
Ezreal NottinghamCircle Nottingham Ezreal - 50% off
Sivir SpectacularCircle Spectacular Sivir - 50% off
Mordekaiser DragonKnightCircle Dragon Knight Mordekaiser - 50% off
Amumu Almost-PromKingCircle Almost-Prom King Amumu - 50% off
Amumu PharaohCircle Pharaoh Amumu - 50% off
[18]
December 21
2015
December 21
2015
Tryndamere HighlandCircle Highland Tryndamere - 50% off
Brand VandalCircle Vandal Brand - 50% off
Poppy BlacksmithCircle Blacksmith Poppy - 50% off
Ashe FreljordCircle Freljord Ashe - 50% off
Morgana SinfulSucculenceCircle Sinful Succulence Morgana - 50% off
Xin Zhao WingedHussarCircle Winged Hussar Xin Zhao - 50% off
[19]
December 22
2015
December 22
2015
Annie AnnieinWonderlandCircle Annie in Wonderland - 50% off
Shaco WorkshopCircle Workshop Shaco - 50% off
Tryndamere VikingCircle Viking Tryndamere - 50% off
Corki HotRodCircle Hot Rod Corki - 50% off
Twitch KingpinCircle Kingpin Twitch - 50% off
Dr. Mundo ExecutionerMundoCircle Executioner Mundo - 50% off
[20]
December 22
2015
December 25
2015
Heimerdinger BlastZoneCircle Blast Zone Heimerdinger - 50% off
Vayne HeartseekerCircle Heartseeker Vayne - 50% off
Dr. Mundo RagebornMundoCircle Rageborn Mundo - 50% off
Miss Fortune ArcadeCircle Arcade Miss Fortune - 50% off
[21]
December 23
2015
December 23
2015
Morgana ExiledCircle Exiled Morgana - 50% off
Kog'Maw CaterpillarCircle Caterpillar Kog'Maw - 50% off
Ashe QueenCircle Queen Ashe - 50% off
Renekton GalacticCircle Galactic Renekton - 50% off
Vayne VindicatorCircle Vindicator Vayne - 50% off
Cho'Gath NightmareCircle Nightmare Cho'Gath - 50% off
[22]
December 24
2015
December 24
2015
Olaf GlacialCircle Glacial Olaf - 50% off
Sona MuseCircle Muse Sona - 50% off
Vladimir CountCircle Count Vladimir - 50% off
Fiddlesticks FiddleMeTimbersCircle Fiddle Me - 50% off
Nocturne VoidCircle Void Nocturne - 50% off
Gangplank SailorCircle Sailor Gangplank - 50% off
[23]
December 25
2015
December 25
2015
Renekton RuneWarsCircle Rune Wars Renekton - 50% off
Leona DefenderCircle Defender Leona - 50% off
Rumble BilgeratCircle Bilgerat Rumble - 50% off
Poppy NoxusCircle Noxus Poppy - 50% off
Heimerdinger AlienInvaderCircle Alien Invader Heimerdinger - 50% off
Ryze ProfessorCircle Professor Ryze - 50% off
[24]
December 25
2015
December 28
2015
Renekton OutbackCircle Outback Renekton - 50% off
Volibear CaptainCircle Captain Volibear - 50% off
Jayce DebonairCircle Debonair Jayce - 50% off
Lee Sin DragonFistCircle Dragon Fist Lee Sin - 50% off
[25]
December 26
2015
December 26
2015
Twisted Fate TheMagnificentCircle The Magnificent Twisted Fate - 50% off
Kennen DeadlyCircle Deadly Kennen - 50% off
Graves JailbreakCircle Jailbreak Graves - 50% off
Ezreal ExplorerCircle Explorer Ezreal - 50% off
Pantheon RuthlessCircle Ruthless Pantheon - 50% off
Alistar LonghornCircle Longhorn Alistar - 50% off
[26]
December 27
2015
December 27
2015
Karthus PhantomCircle Phantom Karthus - 50% off
Singed MadScientistCircle Mad Scientist Singed - 50% off
Annie RedRidingCircle Red Riding Annie - 50% off
Caitlyn SafariCircle Safari Caitlyn - 50% off
Kassadin DeepOneCircle Deep One Kassadin - 50% off
Nunu SasquatchCircle Sasquatch Nunu & Willump - 50% off
[27]
December 28
2015
December 28
2015
Udyr PrimalCircle Primal Udyr - 50% off
Jax VandalCircle Vandal Jax - 50% off
Kayle UnmaskedCircle Unmasked Kayle - 50% off
Shen YellowJacketCircle Yellow Jacket Shen - 50% off
Dr. Mundo ToxicCircle Toxic Dr. Mundo - 50% off
Jax AnglerCircle Angler Jax - 50% off
[28]
December 29
2015
December 29
2015
Ziggs MajorCircle Major Ziggs - 50% off
Sion HextechCircle Hextech Sion - 50% off
Pantheon PerseusCircle Perseus Pantheon - 50% off
Warwick FeralCircle Feral Warwick - 50% off
Malzahar VizierCircle Vizier Malzahar - 50% off
Evelynn MasqueradeCircle Masquerade Evelynn - 50% off
[29]
December 29
2015
January 1
2016
Master Yi SamuraiYiCircle Samurai Yi - 50% off
Evelynn SafecrackerCircle Safecracker Evelynn - 50% off
Katarina SandstormCircle Sandstorm Katarina - 50% off
Blitzcrank iBlitzcrankCircle iBlitzcrank - 50% off
[30]
December 30
2015
December 30
2015
Kog'Maw SonoranCircle Sonoran Kog'Maw - 50% off
Malphite MarbleCircle Marble Malphite - 50% off
Malphite ShamrockCircle Shamrock Malphite - 50% off
Annie PromQueenCircle Prom Queen Annie - 50% off
Galio HextechCircle Hextech Galio - 50% off
Urgot ButcherCircle Butcher Urgot - 50% off
[31]
December 31
2015
December 31
2015
Twitch VandalCircle Vandal Twitch - 50% off
Janna TempestCircle Tempest Janna - 50% off
Ryze TribalCircle Tribal Ryze - 50% off
Garen DesertTrooperCircle Desert Trooper Garen - 50% off
Sejuani SabretuskCircle Sabretusk Sejuani - 50% off
Veigar BaronVonCircle Baron Von Veigar - 50% off
[32]
January 1
2016
January 1
2016
Warwick BigBadCircle Big Bad Warwick - 50% off
Taric EmeraldCircle Emerald Taric - 50% off
Rammus MoltenCircle Molten Rammus - 50% off
Nidalee LeopardCircle Leopard Nidalee - 50% off
Xin Zhao VisceroCircle Viscero Xin Zhao - 50% off
Dr. Mundo Mr.MundoverseCircle Mr. Mundoverse - 50% off
[33]
January 1
2016
January 4
2016
Ryze UncleCircle Uncle Ryze - 50% off
Ahri MidnightCircle Midnight Ahri - 50% off
Singed AugmentedCircle Augmented Singed - 50% off
Cassiopeia JadeFangCircle Jade Fang Cassiopeia - 50% off
[34]
January 5
2016
January 8
2016
Galio CommandoCircle Commando Galio - 50% off
Rammus FullMetalCircle Full Metal Rammus - 50% off
Varus ArclightCircle Arclight Varus - 50% off
Jarvan IV WarringKingdomsCircle Warring Kingdoms Jarvan IV - 50% off
[35]
January 8
2016
January 1
2016
Nocturne RavagerCircle Ravager Nocturne - 50% off
Twisted Fate RedCardCircle Red Card Twisted Fate - 50% off
Tryndamere SultanCircle Sultan Tryndamere - 50% off
Leona IronSolariCircle Iron Solari Leona - 50% off
[36]
January 12
2016
January 15
2016
Sivir WarriorPrincessCircle Warrior Princess Sivir - 50% off
Brand ApocalypticCircle Apocalyptic Brand - 50% off
Aatrox JusticarCircle Justicar Aatrox - 50% off
Swain TyrantCircle Tyrant Swain - 50% off
[37]
January 15
2016
January 18
2016
LeBlanc PrestigiousCircle Prestigious LeBlanc - 50% off
Shyvana IronscaleCircle Ironscale Shyvana - 50% off
Nami KoiCircle Koi Nami - 50% off
Darius BioforgeCircle Bioforge Darius - 50% off
[38]

References

LoL's Official Sales page