There are still limited connections to Guernsey. Potential travellers will need to check any current pre-departure requirements in their home jurisdiction carefully, and whether any public health requirements will apply on their return home. You will also be obliged to follow in-transit requirements stipulated by your carrier.
There are also self-isolation requirements when arriving in the Bailiwick, so you will be given a mask to wear whilst on the plane. Full details can be found here: https://covid19.gov.gg/guidance/travel
Aurigny exempts the following groups from wearing a face mask on their flights into and out of the Bailiwick: