Security staff at 11 Scottish regional airports are going on a two-day strike to demand for equal pay, holidays and sick pay for airport security workers.
Approximately 120 staff who are members of the Prospect union at security company AMSL and work for Highlands and Islands Airports (HIAL) will take part in the strike.
HIAL informed that despite the strike, all its airports, apart from the Dundee airport, would operate normally.
The BBC quoted an HIAL spokesman advising scheduled passengers to reach the airport 15-20 minutes earlier for their flight and to limit the amount of hand or check-in luggage they take to the airport.
Airports to be affected by the strike are Dundee, Inverness and other regional airports including Barra, Benbecula, Islay, Kirkwall, and Campbeltown.
The union is calling the strike after their talks with the management failed to reach an agreement last week.
STV News quoted HIAL managing director Inglis Lyon as saying: "Whilst we are disappointed that the industrial action is taking place, we have been working hard to develop contingencies to enable the airports to remain open and minimise the amount of disruption for our passengers.
"We would like to thank passengers, in advance, for their co-operation and understanding during this period, and we would also like to thank the local teams for their support and helping it be business as usual."
The union is seeking a basic pay increase of 5%, equalisation with Hial's terms and conditions and parity with higher-paid staff at Sumburgh Airport on Shetland.