Brazilian carriers Azul and Trip are still awaiting an approval from the country's anti-trust authority CADE, the final hurdle for the two airlines to finalise their merger.
Azul had said that it expected the approval by the end of 2012, but this did not happen. The airline now says that it hopes that the approval will be obtained this year, but is unable to specify when it will take place.
Brazil's civil aviation authority ANAC approved a share transfer process between the two airlines in November 2012, in which Trip shares were transferred to Azul Trip SA, a holding company for the merged carrier.
Azul and Trip first announced their intentions to merge in May, and began codesharing later in 2012. The two carriers jointly offer more than 100 domestic destinations in their combined network.