International flights in and out of Adelaide Airport are expected to be delayed while Border Force staff take part in nationwide industrial action.

The strikes will be carried out from 5:00am until 1:00pm and between 4:00pm and midnight, affecting all international flights.

Border Force staff at Adelaide Airport will go on strike for eight hours at a time over the next two weeks as part of rolling industrial action by the Community and Public Sector Union (CPSU).

It follows strikes yesterday by staff at Commonwealth agencies including Medicare and Centrelink over pay and working conditions.

The union's national secretary, Nadine Flood, said the action followed failed negotiations with the Federal Government about pay and conditions.

"We are asking Government to sit down and try and resolve a dispute that has gone on for two years now with workers trying to keep their existing rights like family-friendly rights," she said.

Members of the CPSU will go on strike at international airports around the country at different times over the next two weeks.

Adelaide Airport is urging people with international flights to arrive early ahead of the potential delays.

"People will get on their flights but they may face some delays," Ms Flood said.

"Like the department and airlines, we would be encouraging people to get to airports early.

"Disruption is unfortunate but these workers feel they have no choice."