Five travellers from Adelaide have been told to self-isolate after arriving at Canberra Airport last night.

ACT Health has increased its COVID-19 safety measures at the airport — following an outbreak of coronavirus in South Australia.

Passengers arriving from Adelaide are now being screened for symptoms of COVID-19 — with another two flights set to arrive today.

None of the people told to self-isolate have been labelled high risk, but they have been tested after showing symptoms at the airport.