Air Canada and Irish national carrier Aer Lingus have signed an interline agreement that will make flying between the two countries more convenient.
The deal allows customers to fly year-round through London Heathrow Airport on one ticket.
Canada's largest carrier operates daily seasonal service between Toronto and Dublin from June until Oct. 13, but also has year-round service to London from several Canadian gateways.
Aer Lingus operates 23 daily flights from London's largest airport to Dublin, Belfast, Cork and Shannon.
Passengers on both airlines will be able to use a single electronic ticket, check-in kiosks and have baggage checked through to their final destinations. The agreement is a step toward a full code-sharing partnership expected to be finalized next year.
Air Canada said the carriers also plan to relocate operations to Terminal 2 at Heathrow to facilitate connections and later introduce year-round flights between Canada and Ireland.
Air Canada is the 15th largest airline in the world, carrying more than 33 million passengers to 175 destinations. Aer Lingus flies more than 11 million passengers on 56 aircraft.