The average flight time from the Canary Islands to the United Kingdom is between 4 hours and 4 and a half hours depending on how far north your destination in the UK is. A flight from Lanzarote to Glasgow Prestwick will take about 4h 20 mins.
Glasgow has 2 airports; Glasgow international (near paisley) and Glasgow prestwick (near prestwick in ayrshire). easyjet and flybe offer a service to Amsterdam from Glasgow intl. but there are no services to Amsterdam from prestwick. it will take you about 1 hour at least and 2 hours at most.