Danish budget carrier Sterling Airlines' collapse has also forced a division of ground-handler Menzies Aviation out of business.
Menzies Aviation Denmark, a subsidiary of the UK-based handling firm, had depended heavily on Sterling, its leading customer in Copenhagen.
The handler had been dealing with 40 flights per day for Sterling and loss of the airline means it cannot sustain itself.
"Menzies has endeavoured to find an alternative solution to bankruptcy but, after an exhaustive review of alternatives, it is clear that the business cannot continue," says the handler.
It has petitioned for bankruptcy, adding: "This is very unfortunate but, in the economic environment we find ourselves in, it has been necessary to take this action."
Menzies Aviation states that it continues to operate at 112 other locations.