A UK airline has confirmed it will be withdrawing all of its operations from a Scottish airport.
This flight will stop running on October 23.
The public service obligation (PSO) route is supported by the local authority and the Scottish and UK governments.
But, Loganair said the contract was “financially unsustainable”.
The airline added that it would support its Dundee-based employees to find alternative roles.
Currently, the service runs twice a day during the week and once on Sundays and has been in operation since 2014..
The firm originally claimed the service would end earlier on September 28, but this has now been pushed back.
The closure of its operating base in Dundee will impact air travel to Orkney and Shetland.
A Loganair spokesperson said: “Following a review of the route’s long-term viability, Loganair can confirm that its Dundee–London Heathrow service will cease after Friday 23 October, and the operating base will close.
“Earlier this year, we served notice to the stakeholder group behind the Public Service Obligation route after the contract became financially unsustainable.
“We have since explored alternative options but have not been able to identify a viable way forward that meets the objectives of the PSO while allowing the route to operate sustainably.
“Customers affected by the change will be contacted directly. We are also supporting Dundee-based colleagues and will explore alternative roles across the Loganair network wherever possible.
“These decisions reflect the same disciplined, decisive approach that has driven previous improvements in Loganair’s punctuality and resilience, protecting the long-term future of the airline, our people, and the lifeline connectivity we provide to communities across our network.”