The beach is set out with three runways in a triangle, marked by permanent wooden poles at their ends, in directions 07/25, 11/29, 15/33. This almost always allows the Twin Otters that serve the airport to land into the wind. At high tide these runways are under the sea: flight times vary with the tide. Emergency flights occasionally operate at night from the airport, with vehicle lights used to illuminate the runway and reflective strips laid on to the beach.
Barra Airport also has a CAA Ordinary Licence (Number P792) that allows flights for the public transport of passengers or for flying instruction as authorised by the licensee (Highlands & Islands Airports Limited). The aerodrome is not licensed for night use.