<Table> <Tr> <Th colspan="2"> Avatar : The Last Airbender </Th> </Tr> <Tr> <Th> Also known as </Th> <Td> Avatar : The Legend of Aang </Td> </Tr> <Tr> <Th> Genre </Th> <Td> <Ul> <Li> Action / Adventure </Li> <Li> Fantasy </Li> <Li> Comedy - drama </Li> </Ul> </Td> </Tr> <Tr> <Th> Created by </Th> <Td> <Ul> <Li> Michael Dante DiMartino </Li> <Li> Bryan Konietzko </Li> </Ul> </Td> </Tr> <Tr> <Th> Written by </Th> <Td> <Ul> <Li> Michael Dante DiMartino </Li> <Li> Bryan Konietzko </Li> <Li> Nick Malis </Li> <Li> Aaron Ehasz </Li> <Li> Ian Wilcox </Li> <Li> Tim Hedrick </Li> <Li> John O'Bryan </Li> <Li> Elizabeth Welch Ehasz </Li> <Li> Joshua Hamilton </Li> <Li> Joann Estoesta </Li> <Li> Lisa Wahlander </Li> <Li> Andrew Huebner </Li> <Li> Gary Scheppke </Li> <Li> Katie Mattila </Li> <Li> Justin Ridge </Li> <Li> Giancarlo Volpe </Li> <Li> May Chan </Li> <Li> Matthew Hubbard </Li> <Li> James Eagan </Li> </Ul> </Td> </Tr> <Tr> <Th> Directed by </Th> <Td> <Ul> <Li> Lauren MacMullan ( Seasons 1 - 2 ) </Li> <Li> Dave Filoni ( Season 1 ) </Li> <Li> Giancarlo Volpe </Li> <Li> Anthony Lioi ( Season 1 ) </Li> <Li> Ethan Spaulding ( Seasons 2 - 3 ) </Li> <Li> Michael Dante DiMartino ( The Crossroads of Destiny ) </Li> <Li> Joaquim Dos Santos ( Season 3 ) </Li> </Ul> </Td> </Tr> <Tr> <Th> Voices of </Th> <Td> <Ul> <Li> Zach Tyler Eisen </Li> <Li> Mae Whitman </Li> <Li> Jack DeSena </Li> <Li> Jessie Flower </Li> <Li> Dante Basco </Li> <Li> Dee Bradley Baker </Li> <Li> Jennie Kwan </Li> <Li> Mako ( Seasons 1 -- 2 ) </Li> <Li> Greg Baldwin ( Season 3 ) </Li> <Li> Mark Hamill </Li> <Li> Grey DeLisle </Li> <Li> Jason Isaacs </Li> <Li> Clancy Brown </Li> </Ul> </Td> </Tr> <Tr> <Th> Composer ( s ) </Th> <Td> Jeremy Zuckerman , Benjamin Wynn </Td> </Tr> <Tr> <Th> Country of origin </Th> <Td> United States </Td> </Tr> <Tr> <Th> Original language ( s ) </Th> <Td> English </Td> </Tr> <Tr> <Th> No. of seasons </Th> <Td> </Td> </Tr> <Tr> <Th> No. of episodes </Th> <Td> 61 ( list of episodes ) </Td> </Tr> <Tr> <Th colspan="2"> Production </Th> </Tr> <Tr> <Th> Executive producer ( s ) </Th> <Td> <Ul> <Li> Michael Dante DiMartino </Li> <Li> Bryan Konietzko </Li> <Li> Aaron Ehasz ( co-executive ) </Li> </Ul> </Td> </Tr> <Tr> <Th> Running time </Th> <Td> 23 minutes </Td> </Tr> <Tr> <Th> Production company ( s ) </Th> <Td> <Ul> <Li> Nickelodeon Animation Studios </Li> <Li> DR Movie </Li> <Li> JM Animation </Li> <Li> MOI Animation </Li> <Li> Titmouse ( opening ) </Li> </Ul> </Td> </Tr> <Tr> <Th colspan="2"> Release </Th> </Tr> <Tr> <Th> Original network </Th> <Td> Nickelodeon </Td> </Tr> <Tr> <Th> Picture format </Th> <Td> NTSC 4 : 3 ( 480i ) </Td> </Tr> <Tr> <Th> Original release </Th> <Td> February 21 , 2005 ( 2005 - 02 - 21 ) -- July 19 , 2008 ( 2008 - 07 - 19 ) </Td> </Tr> <Tr> <Th colspan="2"> Chronology </Th> </Tr> <Tr> <Th> Followed by </Th> <Td> <Ul> <Li> Avatar : The Last Airbender ( comics ) </Li> <Li> The Legend of Korra ( TV series ) </Li> <Li> The Legend of Korra ( comics ) </Li> </Ul> </Td> </Tr> <Tr> <Th colspan="2"> External links </Th> </Tr> <Tr> <Td colspan="2"> Official website </Td> </Tr> </Table>
when did avatar the last airbender first air
February 21 , 2005