A number of SAS flights have been cancelled following the announcement that SAS and the pilots' union have not reached an agreement and that the pilots are now going on strike. According to Swedavia's website, several SAS flights have now been cancelled, both domestic and international. 

SAS has previously announced that 200–250 flights may be affected daily. In Monday's press release, SAS states that the strike is expected to lead to approximately 50 percent of all SAS flights being cancelled, which will affect approximately 30,000 passengers per day.

The flights operated by SAS Link, SAS Connect, and SAS's external partners are not affected by the strike, according to SAS.

Source: DI.SE