Workers at some of Scotlands smaller airports will strike on Dec. 19 and 22. This will not affect Edinburgh or Glasgow airport operations but may affect flights to the airports where strikes are taking place.
Those airports include Barra, Benbecula, Campbeltown, Dundee, Inverness, Islay, Kirkwall, Stornoway, Sumburgh, Tiree and Wick.
https://www.heraldscotland.com/news/23172712.dates-confirmed-highland-islands-airport-strikes/
Loganair, the airline that flies to those airports, has put out a press release saying which flights will and will not be cancelled.