The propeller plane is so slow that another British Airways flight, from Heathrow, will take off 40 minutes later but arrive at the Scottish city at the same time.
British Airways passengers flying from London Gatwick to Glasgow from late next month will find themselves aboard a propeller plane.
The fare from Gatwick to Glasgow is unappealing, too: £105 one way on the first day of the new service, compared with £30 for the cheapest easyJet flight on the same day.
From 30 March, BA’s Airbus A320 high-flying jet normally used for the link from Sussex to the Clyde will be replaced by a slow, low-altitude ATR72.
British Airways is outsourcing the route to Emerald Airlines, which itself carries the Aer Lingus livery.