Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Belfast to Sydney, Nova Scotia as you normally would.
Sydney (YQY) is the airport you will fly into if you book a flight from Belfast to Sydney. You should not have trouble finding flights to Sydney from Belfast; the airport handles an average of 0 inbound flights from Belfast per day. You should also have plenty of airline options to choose from since 0 airlines have flights to the Sydney airport from Belfast. It is only a 7.0 mi journey from Sydney (YQY) to Sydney’s city center.