TRIP Linhas Aéreas S/A (formerly Transporte Aéreo Regional do Interior Paulista) was a domestic regional airline based in Campinas, São Paulo State, Brazil.

According to the National Civil Aviation Agency of Brazil (ANAC) between January and December 2012 Trip had 4.47% of the domestic market share in terms of passengers per kilometre flown.

The airline was established in 1998 with two Embraer EMB 120 Brasilias and was wholly owned by the Caprioli Group until November 2006, when Águia Branca Group (Chieppe family) bought 49% of its capital.

On January 25, 2007 TRIP Linhas Aéreas has placed an order for seven new ATR 72-500s with options for a further five of the twin turboprops, this deal is its first new ATR order, and the first for the ATR 72-500 in Brazil. The Pratt & Whitney Canada PW127-powered aircraft will be configured with 68 seats. With this growth the company expect have more than 500 employees by 2010. As of January 2007, the company has 500 employees.

On November 13, 2007 TRIP Linhas Aéreas and Total Linhas Aéreas agreed to merge, a transaction which was completed on May 2008. The brand Trip is dedicated to passenger service whereas Total is dedicated to charter and cargo services.

On September 4, 2008, it was announced that SkyWest Airlines agreed to purchase up to 20% of the shares of TRIP Linhas Aéreas. The purchase was done in 3 installments and was completed by 2010. In early May 2012 TRIP bought back the shares.

On August 20, 2010, with the bankruptcy of Flex Linhas Aéreas, Trip took over its services provided to Aerodrome Flight Information Service (AFIS), and Meteorology Service (MET) and Airport Information Service (AIS) on several airports in Brazil through the Flex Communication Center (FCC). FCC serves, among others: TAM Airlines, VRG Linhas Aéreas (operator of Gol and Varig brands), VarigLog, Avianca Brazil, NHT Linhas Aéreas, and Embraer.

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