Aviasales.com compares prices for airline tickets to Guernsey with 728 airlines from all over the world. We do not sell airline tickets ourselves, but you can use our service to find the lowest prices and special offers with no additional fees or mark-ups. Find the cheapest flights to Guernsey with Aviasales.com. The population of Guernsey is 65,000. The official currency is British pounds (GBP).