SA Police said the five accused include a 49-year-old Northern Territory man who failed to comply with emergency management directions after arriving at Adelaide Airport from Melbourne on Friday.
They allege he also gave false information to airport staff, begin being later arrested at a CBD hotel.
On Saturday, a man and a woman in their 20s were arrested and charged after police were called to a minor crash at Pasadena. Police found the driver and passenger of the truck had come from Victoria without completing a cross border travel application.
Also on Saturday, a man who arrived in Adelaide on a flight from Queensland also allegedly failed to comply with emergency management directions.
The 35-year-old man from Queensland was also charged with hinder police and disorderly behaviour.
All four people were refused police bail and will appear in the Adelaide Magistrates Court later today.
The fifth case involves a man who allegedly drove through the Wentworth checkpoint yesterday afternoon before committing a number of alleged offences, including evading police.
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