You will have to go via another airport to get there as there are no direct flights - the choice thus becomes enormous. You may find the options better from Glasgow. On the Internet you can try www.cheapflights.com or any number of others which your search engine (Google, etc.) will come up with but the search will be easier if you first choose your intermediate airport and search for going from there direct. Alternatively you can try a travel agent and tell them your preferred routing, unless it is simply cheapest price. These days they are pretty switched on and you might not do any better on the net (perhaps no more than say �10). Finally, you can also have a look at teletext. If you really want to learn of all (or even only most) options you will spend a lot of time on this.