Intense competition from low-cost airlines ensures directline-flights can find cheap Glasgow International flights all year round with a variety of airlines. Every year sees new routes from Glasgow International to the UK, Ireland, Europe, the Middle East, Canada and the USA. directline-flights will keep you up to date with Glasgow International information regarding airlines, routes and destinations. directline-flights can also search for Glasgow airport hotels and parking at Glasgow International. Cheap flights from Glasgow also depart from Glasgow Prestwick Airport.