How do I pay for the Airport Express? Airport Express services can accept payment via Snapper, cash, or contactless credit/debit cards. You pay with Snapper like you would any other bus journey – make sure to tag on and off! If you’d like to tag on multiple people, simply let the bus driver know. If you decide against taking the Airport Express before the bus has left the stop you tagged on at, simply ask the driver to cancel your trip for you, and follow any subsequent instructions.