Aberdeen International Airport will be placed at a competitive disadvantage after the Scottish Government confirmed that flights between the Highlands and Islands and other Scottish airports will be exempt from the new Air Departure Tax (ADT).
The devolved tax, due to come into force in April 2027, will exempt flights to and from the Highlands and Islands from the levy.
Russell Borthwick, chief executive of Aberdeen & Grampian Chamber of Commerce, said the policy risked disadvantaging the North-east.
"Using the powers of devolution to penalise rather than stimulate the North-east economy is just plane stupid, he said.
"It makes no sense to put Aberdeen at a competitive disadvantage versus other airports in the north of Scotland.
"Our city and region face many challenges, not least a government-inflicted crisis in oil and gas and the results of chronic underinvestment in infrastructure over decades. Businesses are crying out for support, not more barriers to growth.
"Rail services between the North-east and the rest of the UK are nowhere near as fast and reliable as they could be and are often not a viable alternative for business travellers for whom time is money, or tourists wanting to make the most of their visit. It takes over seven hours to travel by train to London, meaning the equivalent of a full working day in transit each way.
"Aberdeen is a vital aviation hub for a global energy industry. Our business community can remain Scotland’s engine for economic growth if our governments would just allow us to catch a break.”
Deputy First Minister Jenny Gilruth said the exemptions recognise the unique connectivity challenges faced by Highland and Island communities, while also confirming a Scottish private jet tax will be introduced from April 2028.