laurie
Try Prestwick-Islay-Tiree-Oban-Prestwick. Wouldn't go for Glasgow unless you're rich 'cos you won't get a concessionary landing fee.
Over the last two years HIA (Highlands and Islands Airports) have run the Black Bottle Whisky challenge - Campbeltown-Oban-Tiree-Islay inside 24h. That's a nice route as well.
Watch out for local weather along the Kintyre peninsula.