The Belgrade Nikola Tesla Airport has advertised the rent out of the locations for the installation of 18 billboards in the airport building area for a 3-year period.
The initial price is EUR 250 per position, which amounts to EUR 4,500 a month for a total of 18 billboards, it is said in the public invitation, available at this link
The space is rented out as a single unit and can't be subleased, it is added. The bid submission deadline in September 5.
The airport has also advertised the rent out of the locations for the installation of ad media in the zone of the two terminals. More details can be found HERE