The regular flight service from Loganair, flying under the name of British Airways, offers flights to Islay airport from Glasgow. There are scheduled flights during week days and in the weekends. The standard fares on these regular services are £79 and £103 for a return ticket.
Loganair announced in spring last year that they will increase its service between Islay and Glasgow with extra flights during some weekdays and on Sunday offering cheaper tickets on these flights.
Funny enough I couldn’t find on their website if they repeated the same schedule and extra flights during this summer season so I have put this to the test and booked myself a return ticket on the loganair website, seeing is believing right? I managed to get myself a ticket for £57.20 on an extra flight which is a lot cheaper than the standard fares. I also tried to book a flight leaving April and returning in May on a regular flight which was £127.20! So if you can book early and travel anywhere between the end of May and the end of September, providing they use the same schedule as last year, and use one of the extra flights you can save yourself somewhere between 40 and 70 pounds!