British Airways will suspend service to Calgary during the northern winter season, in what it calls a regular review of its schedule.
The Oneworld carrier confirms that it will "temporarily" end its daily service to Calgary from London Heathrow operated by a Boeing 787-9 on 27 October. It does not say when service will resume after the IATA winter season, which runs from October to March 2019.
BA adds that the move is part of a regular schedule review to "ensure that we are flying to destinations popular with our customers during the months they wish to fly".
The airline did not respond directly address the question of if the Calgary suspension is related to issues with Rolls-Royce Trent 1000 engines that have forced it to remove an undisclosed number of 787s from service this summer.
"We are planning to lease three aircraft from Qatar Airways for the peak summer travel months to help mitigate the level of flight cancellations caused by the continuing issues with Rolls-Royce Trent 1000 engines," says BA.
The airline has faced increased competition to Calgary in recent years. WestJet launched year-round service between the city and London Gatwick in May 2016, five months after which the two carriers suspended their codeshare agreement.
Air Canada and Air Transat also fly between Calgary and London, FlightGlobal schedules data shows.
BA is growing its North America network this year with new Nashville service that began in May.
The story has been updated to reflect that BA is not suspending Austin service in June.