APD and transfer/connections

skycatcher

HI,

If I start my long haul flight in Dublin but it connects through London do I pay APD once at the origin or also at the transfer point? I know it will all be wrapped up in the ticket cost but the APD in Dublin is much less than in London.

Caz3121

UK APD is for flights originating in UK.  if all on one ticket there is no APD for being in transit through UK. There can be big savings to be made especially in premium classes by starting journey outside the UK
https://www.gov.uk/guidance/air-passenger-duty-and-connected-flights