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
Early Sales


Period Sales Link
February 1
2013
February 4
2013
AmumuSquare.png Little Knight Amumu [S|L] - 50% off
MorganaSquare.png Exiled Morgana [S|L] - 50% off
AsheSquare.png Queen Ashe [S|L] - 50% off
[1]
February 5
2013
February 8
2013
Miss FortuneSquare.png Secret Agent Miss Fortune [S|L] - 50% off
SonaSquare.png Muse Sona [S|L] - 50% off
XerathSquare.png Runeborn Xerath [S|L] - 50% off
[2]
February 8
2013
February 11
2013
VeigarSquare.png Veigar Greybeard [S|L] - 50% off
ShyvanaSquare.png Ironscale Shyvana [S|L] - 50% off
TwitchSquare.png Gangster Twitch [S|L] - 50% off
[3]
February 12
2013
February 15
2013
A Fearsome Fighting Team:
RammusSquare.png Ninja Rammus [S|L] - 50% off
AkaliSquare.png Blood Moon Akali [S|L] - 50% off
ShenSquare.png Blood Moon Shen [S|L] - 50% off
[4]
February 15
2013
February 18
2013
KennenSquare.png Kennen M. D. [S|L] - 50% off
TryndamereSquare.png King Tryndamere [S|L] - 50% off
SwainSquare.png Bilgewater Swain [S|L] - 50% off
[5]
February 19
2013
February 22
2013
LuxSquare.png Spellthief Lux [S|L] - 50% off
PoppySquare.png Scarlet Hammer Poppy [S|L] - 50% off
MaokaiSquare.png Charred Maokai [S|L] - 50% off
[6]
February 22
2013
February 25
2013
Arcane Asylum:
ShacoSquare.png Mad Hatter Shaco [S|L] - 50% off
SingedSquare.png Mad Scientist Singed [S|L] - 50% off
ZiggsSquare.png Mad Scientist Ziggs [S|L] - 50% off
[7]
February 26
2013
March 1
2013
Lee SinSquare.png Acolyte Lee Sin [S|L] - 50% off
NocturneSquare.png Frozen Terror Nocturne [S|L] - 50% off
MalphiteSquare.png Obsidian Malphite [S|L] - 50% off
[8]
March 1
2013
March 4
2013
Tender is the Twilight:
FizzSquare.png Tundra Fizz [S|L] - 50% off
EvelynnSquare.png Tango Evelynn [S|L] - 50% off
Twisted FateSquare.png Tango Twisted Fate [S|L] - 50% off
[9]
March 5
2013
March 8
2013
AkaliSquare.png Nurse Akali [S|L] - 50% off
VolibearSquare.png Thunder Lord Volibear [S|L] - 50% off
JaxSquare.png Temple Jax [S|L] - 50% off
[10]
March 8
2013
March 11
2013
CassiopeiaSquare.png Siren Cassiopeia [S|L] - 50% off
Xin ZhaoSquare.png Viscero Xin Zhao [S|L] - 50% off
JayceSquare.png Full Metal Jayce [S|L] - 50% off
[11]
March 12
2013
March 15
2013
BrandSquare.png Cryocore Brand [S|L] - 50% off
SionSquare.png Barbarian Sion [S|L] - 50% off
NunuSquare.png Grungy Nunu [S|L] - 50% off
[12]
March 15
2013
March 18
2013
DariusSquare.png Lord Darius [S|L] - 50% off
RammusSquare.png Chrome Rammus [S|L] - 50% off
NautilusSquare.png Subterranean Nautilus [S|L] - 50% off
[13]
March 18
2013
March 21
2013
MorganaSquare.png Sinful Succulence Morgana [S|L] - 50% off
PantheonSquare.png Perseus Pantheon [S|L] - 50% off
AnnieSquare.png Prom Queen Annie [S|L] - 50% off
[14]
March 22
2013
March 25
2013
PoppySquare.png Battle Regalia Poppy [S|L] - 50% off
RenektonSquare.png Outback Renekton [S|L] - 50% off
JannaSquare.png Tempest Janna [S|L] - 50% off
[15]
March 26
2013
March 29
2013
CaitlynSquare.png Sheriff Caitlyn [S|L] - 50% off
BlitzcrankSquare.png Boom Boom Blitzcrank [S|L] - 50% off
TryndamereSquare.png Viking Tryndamere [S|L] - 50% off
[16]
March 29
2013
April 1
2013
Miss FortuneSquare.png Mafia Miss Fortune [S|L] - 50% off
AlistarSquare.png Longhorn Alistar [S|L] - 50% off
AmumuSquare.png Emumu [S|L] - 50% off
[17]
April 2
2013
April 5
2013
TeemoSquare.png Cottontail Teemo [S|L] - 50% off
LeonaSquare.png Valkyrie Leona [S|L] - 50% off
RivenSquare.png Battle Bunny Riven [S|L] - 50% off
[18]
April 5
2013
April 8
2013
KassadinSquare.png Pre-Void Kassadin [S|L] - 50% off
KennenSquare.png Karate Kennen [S|L] - 50% off
Lee SinSquare.png Traditional Lee Sin [S|L] - 50% off
[19]
April 9
2013
April 12
2013
GravesSquare.png Hired Gun Graves [S|L] - 50% off
Twisted FateSquare.png High Noon Twisted Fate [S|L] - 50% off
LuxSquare.png Imperial Lux [S|L] - 50% off
[20]
April 12
2013
April 15
2013
Ionian nights:
AkaliSquare.png Silverfang Akali [S|L] - 50% off
Master YiSquare.png Ionia Master Yi [S|L] - 50% off
IreliaSquare.png Nightblade Irelia [S|L] - 50% off
[21]
April 16
2013
April 19
2013
SwainSquare.png Northern Front Swain [S|L] - 50% off
WarwickSquare.png Hyena Warwick [S|L] - 50% off
OriannaSquare.png Gothic Orianna [S|L] - 50% off
[22]
April 19
2013
April 22
2013
ZiggsSquare.png Pool Party Ziggs [S|L] - 50% off
NautilusSquare.png AstroNautilus [S|L] - 50% off
SonaSquare.png Arcade Sona [S|L] - 50% off
[23]
April 23
2013
April 26
2013
Lee SinSquare.png Muay Thai Lee Sin [S|L] - 50% off
GalioSquare.png Enchanted Galio [S|L] - 50% off
Master YiSquare.png Chosen Master Yi [S|L] - 50% off
[24]
April 26
2013
April 29
2013
ZileanSquare.png Shurima Desert Zilean [S|L] - 50% off
FiddlesticksSquare.png Fiddle Me Timbers [S|L] - 50% off
SkarnerSquare.png Earthrune Skarner [S|L] - 50% off
[25]
April 30
2013
May 3
2013
Twisted FateSquare.png Jack of Hearts Twisted Fate [S|L] - 50% off
NidaleeSquare.png French Maid Nidalee [S|L] - 50% off
AhriSquare.png Dynasty Ahri [S|L] - 50% off
[26]
April 30
2013
May 6
2013
AniviaSquare.png Hextech Anivia [S|L] - 20% off
AsheSquare.png Freljord Ashe [S|L] - 20% off
GragasSquare.png Gragas, Esq. [S|L] - 20% off
JannaSquare.png Frost Queen Janna [S|L] - 20% off
NunuSquare.png Demolisher Nunu [S|L] - 20% off
OlafSquare.png Glacial Olaf [S|L] - 20% off
TryndamereSquare.png King Tryndamere [S|L] - 20% off
UdyrSquare.png Primal Udyr [S|L] - 20% off
QuinnSquare.png Phoenix Quinn [S|L] - 20% off
VolibearSquare.png Northern Storm Volibear [S|L] - 20% off
[27]
May 3
2013
May 6
2013
MalzaharSquare.png Shadow Prince Malzahar [S|L] - 50% off
AlistarSquare.png Infernal Alistar [S|L] - 50% off
RenektonSquare.png Galactic Renekton [S|L] - 50% off
[28]
May 10
2013
May 13
2013
KayleSquare.png Battleborn Kayle [S|L] - 50% off
KennenSquare.png Deadly Kennen [S|L] - 50% off
RammusSquare.png Freljord Rammus [S|L] - 50% off
[29]
May 14
2013
May 17
2013
SejuaniSquare.png Darkrider Sejuani [S|L] - 50% off
AsheSquare.png Freljord Ashe [S|L] - 50% off
SivirSquare.png Warrior Princess Sivir [S|L] - 50% off
[30]
May 17
2013
May 20
2013
NocturneSquare.png Void Nocturne [S|L] - 50% off
PantheonSquare.png Myrmidon Pantheon [S|L] - 50% off
KarthusSquare.png Pentakill Karthus [S|L] - 50% off
[31]
May 21
2013
May 24
2013
Twisted FateSquare.png Musketeer Twisted Fate [S|L] - 50% off
RumbleSquare.png Bilgerat Rumble [S|L] - 50% off
SorakaSquare.png Dryad Soraka [S|L] - 50% off
[32]
May 24
2013
May 27
2013
AkaliSquare.png Stinger Akali [S|L] - 50% off
KassadinSquare.png Deep One Kassadin [S|L] - 50% off
JannaSquare.png Hextech Janna [S|L] - 50% off
[33]
May 28
2013
May 31
2013
SonaSquare.png Pentakill Sona [S|L] - 50% off
MalphiteSquare.png Coral Reef Malphite [S|L] - 50% off
LeBlancSquare.png Prestigious LeBlanc [S|L] - 50% off
[34]
May 31
2013
June 3
2013
VarusSquare.png Arclight Varus [S|L] - 50% off
Kog'MawSquare.png Deep Sea Kog'Maw [S|L] - 50% off
TrundleSquare.png Junkyard Trundle [S|L] - 50% off
[35]
June 4
2013
June 7
2013
KatarinaSquare.png Sandstorm Katarina [S|L] - 50% off
GragasSquare.png Hillbilly Gragas [S|L] - 50% off
VladimirSquare.png Count Vladimir [S|L] - 50% off
[36]
June 7
2013
June 11
2013
AhriSquare.png Foxfire Ahri [S|L] - 50% off
WukongSquare.png General Wukong [S|L] - 50% off
AmumuSquare.png Almost-Prom King Amumu [S|L] - 50% off
[37]
June 11
2013
June 14
2013
VeigarSquare.png Superb Villain Veigar [S|L] - 50% off
MalphiteSquare.png Marble Malphite [S|L] - 50% off
Kog'MawSquare.png Monarch Kog'Maw [S|L] - 50% off
[38]
June 14
2013
June 17
2013
Dr. MundoSquare.png Rageborn Mundo [S|L] - 50% off
Miss FortuneSquare.png Waterloo Miss Fortune [S|L] - 50% off
KatarinaSquare.png Mercenary Katarina [S|L] - 50% off
[39]
June 18
2013
June 21
2013
VeigarSquare.png Baron Von Veigar [S|L] - 50% off
AsheSquare.png Woad Ashe [S|L] - 50% off
FiddlesticksSquare.png Bandito Fiddlesticks [S|L] - 50% off
[40]
June 21
2013
June 24
2013
ZiggsSquare.png Major Ziggs [S|L] - 50% off
Master YiSquare.png Samurai Yi [S|L] - 50% off
VayneSquare.png Vindicator Vayne [S|L] - 50% off
[41]
June 25
2013
June 28
2013
TaricSquare.png Bloodstone Taric [S|L] - 50% off
HeimerdingerSquare.png Blast Zone Heimerdinger [S|L] - 50% off
GarenSquare.png Sanguine Garen [S|L] - 50% off
[42]
June 28
2013
July 1
2013
SionSquare.png Warmonger Sion [S|L] - 50% off
WarwickSquare.png Tundra Hunter Warwick [S|L] - 50% off
SingedSquare.png Hextech Singed [S|L] - 50% off
[43]
July 2
2013
July 5
2013
RyzeSquare.png Uncle Ryze [S|L] - 50% off
KarthusSquare.png Statue of Karthus [S|L] - 50% off
GangplankSquare.png Minuteman Gangplank [S|L] - 50% off
[44]
July 5
2013
July 8
2013
Xin ZhaoSquare.png Winged Hussar Xin Zhao [S|L] - 50% off
LeBlancSquare.png Wicked LeBlanc [S|L] - 50% off
LuxSquare.png Sorceress Lux [S|L] - 50% off
[45]
July 9
2013
July 12
2013
Kha'ZixSquare.png Mecha Kha'Zix [S|L] - 50% off
LeonaSquare.png Iron Solari Leona [S|L] - 50% off
AniviaSquare.png Bird of Prey Anivia [S|L] - 50% off
[46]
July 9
2013
July 16
2013
Flexible cost bundles:
1. Pentakill Bundle - 50% off, RP 2325 (RP 4345 with the champions):
KarthusSquare.png Pentakill Karthus [S|L]
MordekaiserSquare.png Pentakill Mordekaiser [S|L]
OlafSquare.png Pentakill Olaf [S|L]
SonaSquare.png Pentakill Sona [S|L]
YorickSquare.png Pentakill Yorick [S|L]
2. Ranged Rovers Bundle - 25% off, RP 3585:
Quinn Quinn
Draven Draven
Varus Varus
Graves Graves
Vayne Vayne
3. Pretty in Pink Bundle - 40% off, RP 2067 (RP 4116 with the champions):
OriannaSquare.png Sewn Chaos Orianna [S|L]
LuluSquare.png Bittersweet Lulu [S|L]
AhriSquare.png Dynasty Ahri [S|L]
TaricSquare.png Armor of the Fifth Age Taric [S|L]
4. Good Night, Sweet Skins Bundle (skins removed afterwards), RP 935 (RP 3000 with the champions):
Kog'MawSquare.png Caterpillar Kog'Maw [S|L]
GangplankSquare.png Sailor Gangplank [S|L]
GalioSquare.png Hextech Galio [S|L]
SonaSquare.png Muse Sona [S|L]
RammusSquare.png Molten Rammus [S|L]
[47]
July 12
2013
July 15
2013
RammusSquare.png Full Metal Rammus [S|L] - 50% off
KatarinaSquare.png High Command Katarina [S|L] - 50% off
Miss FortuneSquare.png Road Warrior Miss Fortune [S|L] - 50% off
[48]
July 16
2013
July 19
2013
RyzeSquare.png Dark Crystal Ryze [S|L] - 50% off
KatarinaSquare.png Bilgewater Katarina [S|L] - 50% off
OlafSquare.png Forsaken Olaf [S|L] - 50% off
[49]
July 19
2013
July 22
2013
PantheonSquare.png Full Metal Pantheon [S|L] - 50% off
KarmaSquare.png Sun Goddess Karma [S|L] - 50% off
NocturneSquare.png Ravager Nocturne [S|L] - 50% off
[50]
July 23
2013
July 26
2013
ZyraSquare.png Wildfire Zyra [S|L] - 50% off
RengarSquare.png Headhunter Rengar [S|L] - 50% off
Jarvan IVSquare.png Commando Jarvan IV [S|L] - 50% off
[51]
July 26
2013
July 29
2013
SyndraSquare.png Justicar Syndra [S|L] - 50% off
MorganaSquare.png Blade Mistress Morgana [S|L] - 50% off
ShyvanaSquare.png Boneclaw Shyvana [S|L] - 50% off
[52]
July 30
2013
August 2
2013
GangplankSquare.png Special Forces Gangplank [S|L] - 50% off
GragasSquare.png Oktoberfest Gragas [S|L] - 50% off
WarwickSquare.png Big Bad Warwick [S|L] - 50% off
[53]
August 2
2013
August 5
2013
JaxSquare.png Nemesis Jax [S|L] - 50% off
LeonaSquare.png Defender Leona [S|L] - 50% off
NasusSquare.png Galactic Nasus [S|L] - 50% off
[54]
August 6
2013
August 9
2013
UrgotSquare.png Battlecast Urgot [S|L] - 50% off
RenektonSquare.png Bloodfury Renekton [S|L] - 50% off
TrundleSquare.png Lil' Slugger Trundle [S|L] - 50% off
[55]
August 9
2013
August 12
2013
SejuaniSquare.png Sabretusk Sejuani [S|L] - 50% off
Miss FortuneSquare.png Cowgirl Miss Fortune [S|L] - 50% off
LuxSquare.png Commando Lux [S|L] - 50% off
[56]
August 13
2013
August 16
2013
TryndamereSquare.png Sultan Tryndamere [S|L] - 50% off
AnnieSquare.png Reverse Annie [S|L] - 50% off
UdyrSquare.png Black Belt Udyr [S|L] - 50% off
[57]
August 20
2013
August 23
2013
MalphiteSquare.png Glacial Malphite [S|L] - 50% off
Master YiSquare.png Headhunter Master Yi [S|L] - 50% off
FizzSquare.png Atlantean Fizz [S|L] - 50% off
[58]
August 23
2013
August 26
2013
OlafSquare.png Pentakill Olaf [S|L] - 50% off
Jarvan IVSquare.png Dragonslayer Jarvan IV [S|L] - 50% off
Xin ZhaoSquare.png Imperial Xin Zhao [S|L] - 50% off
[59]
August 27
2013
August 30
2013
TristanaSquare.png Rocket Girl Tristana [S|L] - 50% off
NautilusSquare.png Abyssal Nautilus [S|L] - 50% off
OriannaSquare.png Sewn Chaos Orianna [S|L] - 50% off
[60]
August 30
2013
September 2
2013
YorickSquare.png Pentakill Yorick [S|L] - 50% off
GarenSquare.png Rugged Garen [S|L] - 50% off
GalioSquare.png Commando Galio [S|L] - 50% off
[61]
September 3
2013
September 6
2013
SwainSquare.png Tyrant Swain [S|L] - 50% off
HecarimSquare.png Reaper Hecarim [S|L] - 50% off
Dr. MundoSquare.png Executioner Mundo [S|L] - 50% off
[62]
September 6
2013
September 9
2013
ShacoSquare.png Asylum Shaco [S|L] - 50% off
AhriSquare.png Midnight Ahri [S|L] - 50% off
RyzeSquare.png Tribal Ryze [S|L] - 50% off
[63]
September 10
2013
September 13
2013
MordekaiserSquare.png Lord Mordekaiser [S|L] - 50% off
KarthusSquare.png Grim Reaper Karthus [S|L] - 50% off
NasusSquare.png Pharaoh Nasus [S|L] - 50% off
[64]
September 13
2013
September 16
2013
CaitlynSquare.png Officer Caitlyn [S|L] - 50% off
VolibearSquare.png Northern Storm Volibear [S|L] - 50% off
IreliaSquare.png Aviator Irelia [S|L] - 50% off
[65]
September 17
2013
September 20
2013
AmumuSquare.png Sad Robot Amumu [S|L] - 50% off
JaxSquare.png Jaximus [S|L] - 50% off
NidaleeSquare.png Pharaoh Nidalee [S|L] - 50% off
[66]
September 20
2013
September 23
2013
Jarvan IVSquare.png Darkforge Jarvan IV [S|L] - 50% off
BrandSquare.png Apocalyptic Brand [S|L] - 50% off
AsheSquare.png Sherwood Forest Ashe [S|L] - 50% off
[67]
September 24
2013
September 27
2013
OriannaSquare.png Bladecraft Orianna [S|L] - 50% off
TeemoSquare.png Super Teemo [S|L] - 50% off
AniviaSquare.png Noxus Hunter Anivia [S|L] - 50% off
[68]
September 27
2013
September 30
2013
GarenSquare.png Dreadknight Garen [S|L] - 50% off
EzrealSquare.png Explorer Ezreal [S|L] - 50% off
MalzaharSquare.png Djinn Malzahar [S|L] - 50% off
[69]
October 1
2013
October 4
2013
MorganaSquare.png Blackthorn Morgana [S|L] - 50% off
RivenSquare.png Redeemed Riven [S|L] - 50% off
XerathSquare.png Battlecast Xerath [S|L] - 50% off
[70]
October 4
2013
October 7
2013
Kog'MawSquare.png Jurassic Kog'Maw [S|L] - 50% off
FioraSquare.png Nightraven Fiora [S|L] - 50% off
MaokaiSquare.png Totemic Maokai [S|L] - 50% off
[71]
October 8
2013
October 11
2013
SkarnerSquare.png Sandscourge Skarner [S|L] - 50% off
DariusSquare.png Bioforge Darius [S|L] - 50% off
UrgotSquare.png Giant Enemy Crabgot [S|L] - 50% off
[72]
October 11
2013
October 14
2013
ZedSquare.png Shockblade Zed [S|L] - 50% off
AmumuSquare.png Little Knight Amumu [S|L] - 50% off
YorickSquare.png Undertaker Yorick [S|L] - 50% off
[73]
October 15
2013
October 18
2013
IreliaSquare.png Frostblade Irelia [S|L] - 50% off
GravesSquare.png Mafia Graves [S|L] - 50% off
EvelynnSquare.png Shadow Evelynn [S|L] - 50% off
[74]
October 18
2013
October 21
2013
LuluSquare.png Wicked Lulu [S|L] - 50% off
CaitlynSquare.png Arctic Warfare Caitlyn [S|L] - 50% off
TristanaSquare.png Buccaneer Tristana [S|L] - 50% off
[75]
October 22
2013
October 25
2013
ShenSquare.png Warlord Shen [S|L] - 50% off
HecarimSquare.png Blood Knight Hecarim [S|L] - 50% off
VladimirSquare.png Marquis Vladimir [S|L] - 50% off
[76]
October 25
2013
October 28
2013
RenektonSquare.png Rune Wars Renekton [S|L] - 50% off
TalonSquare.png Crimson Elite Talon [S|L] - 50% off
ViktorSquare.png Prototype Viktor [S|L] - 50% off
[77]
October 29
2013
November 1
2013
GarenSquare.png Steel Legion Garen [S|L] - 50% off
UdyrSquare.png Primal Udyr [S|L] - 50% off
FiddlesticksSquare.png Spectral Fiddlesticks [S|L] - 50% off
[78]
November 1
2013
November 4
2013
VayneSquare.png Dragonslayer Vayne [S|L] - 50% off
ShyvanaSquare.png Ironscale Shyvana [S|L] - 50% off
KarmaSquare.png Sakura Karma [S|L] - 50% off
[79]
November 5
2013
November 8
2013
Cho'GathSquare.png Jurassic Cho'Gath [S|L] - 50% off
AsheSquare.png Amethyst Ashe [S|L] - 50% off
AniviaSquare.png Hextech Anivia [S|L] - 50% off
[80]
November 8
2013
November 11
2013
GravesSquare.png Jailbreak Graves [S|L] - 50% off
VeigarSquare.png Veigar Greybeard [S|L] - 50% off
PantheonSquare.png Ruthless Pantheon [S|L] - 50% off
[81]

References

Skin Sales Super-Thread by Coreporeal