For customers flying solely within the UK, including Northern Ireland, a passport is not required, but customers must produce valid/in-date photographic ID when travelling, such as a passport or driving licence (full or provisional), employment ID, military card, residency card, etc.

Technically, the answer is no for almost all commercial airlines in 2026. While the UK government does not legally require an ID for domestic travel by law, individual airlines have their own strict policies for security and revenue protection. British Airways, easyJet, and Ryanair all now require a valid form of photographic ID for all domestic flights within the UK. The most commonly accepted forms are a valid passport (or one expired for less than 5 years), a valid photocard driving license, or a national ID card. Some regional carriers like Loganair might accept a wider range of IDs like a "Young Scot Card" or a bus pass, but a "standard" passenger should never count on traveling without photo identification. Children under 16 generally do not need their own ID if they are traveling with an adult who has a valid ID, but "unaccompanied minors" aged 12-15 usually must carry their own passport or birth certificate. If you show up at the gate without any form of ID, you will almost certainly be denied boarding, as the airline must verify that the person boarding matches the name on the ticket to prevent "ticket reselling" and maintain flight manifests.