The deadline for the submission of bids for Sofia Vrazhdbena Airport has been extended again for the fifth time to April 11.

The Transport Ministry of Bulgaria has issued the latest postponement because of the changes to the tender documentation to reflect changes in Bulgaria's Concession Act easing concerns raised by prospective investors in the tender for the Sofia Airport.

The first process of initiating the concession was held in 2016 but was later scrapped in March 2017. The call to push tender of the project receives huge backlash especially from the socialist group who are opposing the plan. 

Several airport operators are interested in bidding for the project which includes: Germany’s Fraport, France’s Aeroports de Paris, and Switzerland’s Flughaven Zurich. Manchester Airports Group (MAG) and London Stansted airports have also expressed interest in bidding for the facility.