Cheap Summer Hoildays

www.cheapflights.co.uk That should be a helpful site that will allow you to search for flights to Glasgow. It then lists details of the travel agents that sell discount tickets. I have used it to get a cheap airline ticket to Mexico. I like Trailfinders for long haul airline tickets. First Choice are great for charter flights that can be used to stay away for two weeks. Some people use the Travel Supermarket site and Airline Ticket Network. Good luck.