Highland Council said the news about Eastern Airways was “deeply disappointing”.
“Wick airport provides a lifeline service to communities, decreasing inequality of access to healthcare, education and business,” it added.
A spokesperson said the local authority had already submitted a business case to Scottish government agency Transport Scotland.
“This makes the case not only for the continuation of the PSO air services to Wick but for the expansion of provision,” the spokesperson added.
Earlier this year the Scottish government provided a £1m subsidy, topped up by a £300,000 contribution from Highland Council, for the Wick to Aberdeen flights.
