Air São Tomé and Príncipe (Linhas Aéreas de São Tomé e Príncipe, Lda) was an airline based in São Tomé, São Tomé and Príncipe.^[1] It operated scheduled services within the islands and to neighbouring Gabon. Its main base was São Tomé International Airport.^[2] It lost its only aircraft in an accident in 2006.

Air São Tomé was founded in 1993 to replace Equatorial International Airlines. The company was owned by TAP Portugal (40%), government of São Tomé and Príncipe (35%) and Mistral Voyages (1%).^[2]

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Air São Tomé and Príncipe operated the following services (at January 2005):

• Domestic scheduled destinations: Príncipe and São Tomé.
• International scheduled destinations: Libreville.

• On 23 May 2006, Air São Tomé and Príncipe's only aircraft, a DHC-6 Twin Otter Series 300, crashed in Ana Chaves Bay in the north east of São Tomé Island during a training flight. There were four fatalities, and the aircraft was damaged beyond repair. [1]

Air São Tomé and Príncipe operated:^[2]

• 1 DHC-6 Twin Otter Series 300 registration S9-BAL, offered by TAP Portugal, and crashed during 2006.