Hans Stråberg, CEO of Electrolux, expressed his concerns in a private letter to his counterpart at SAS Sweden, Anders Ehrling. Newspaper Aftonbladet published a copy of the letter on Wednesday afternoon.
“Whatever the reasons, I can only say that this affects us as customers of SAS and is not something that we can accept,” wrote Stråberg.
The Electrolux chief added that he was worried because thousands of his employees fly with the Scandinavian carrier every year.
“I would like Electrolux to remain a customer of SAS but our patience has its limits,” he wrote.
Similar sentiments were expressed later in the day by telecoms giant Ericsson, which referred to itself as the airline’s second biggest customer.
“We use SAS an awful lot. We are very much dependent on their infrastructure functioning in Scandinavia.
“Air travel is like telecommunications; it has to work,” spokeswoman Åse Lindskog told news agency TT.
Recent strike threats have meant that Ericsson has begun looking at alternatives.
“That’s what we are doing. We are looking at other services, the upshot of which will be that we get used to flying with other airlines instead,” said Lindskog, who would not rule out a permanent move away from SAS.
If a cabin strike breaks out as planned on Friday, SAS has said it will be force to cancel all domestic and European flights.