Yes, you can absolutely pay by card for the Glasgow Airport bus, specifically the First Glasgow Airport Express Service 500. In 2026, the service is fully equipped with "Tap & Cap" technology, meaning you can simply tap your contactless credit card, debit card, or mobile device (Apple Pay/Google Pay) on the reader as you board. You do not need to buy a ticket in advance, although you can still purchase one via the First Bus app for a slightly faster boarding process. The driver can also issue physical tickets for card payments if you need a receipt for business expenses. This "gold standard" of convenience ensures that international travelers arriving at GLA don't need to scramble for British Pounds or coins immediately upon landing. The service runs 24/7, and the contactless system automatically calculates the best fare for you if you use it multiple times within a day or week. It is important to note that while contactless is the norm, the "Tap & Cap" system works best with physical cards or devices; ensure your card is "active" for international transactions if you are visiting from outside the UK.