British airline flyglobespan will begin operating daily flights from London Stanstead, Manchester and Glasgow to Hamilton International in Ontario in May, 2007.
I mention this now because, if you are planning to travel between the U.K and Ontario, Canada, next summer, one-way fares (including taxes and fees) start at $259 CAD for economy class ($230 US/124 GBP), which is an incredible price.
The airline will begin taking bookings for these low introductory fares this October.
I've never flown this particular airline, so I leave it to you to look into it. What I can tell you, though, if you are considering this trip and wondering where the heck Hamilton is, is that it's about half an hour drive west of Toronto Pearson airport, midway between Toronto and Niagara Falls.
If you are planning to visit the Canadian west, though, internal flights from Toronto to Vancouver in the busy summer season (June-August) will cost about $600 CAD return economy. The VIApassenger train is much more costly, but makes for a great scenic trip once you get past the miles and miles of miles and miles that are the Prairies.