Aer Lingus A319 EI-EPR swapped bases from Belfast City – Dublin today by way of operating EI34 Belfast City – London Heathrow then EI163 London Heathrow – Dublin. Sister EI-EPS, which has been operating from Dublin since 7th December, moved back to Belfast City by operating EI162 Dublin – London Heathrow followed by EI35 London Heathrow – Belfast City.