Yes, you can use an Oyster card (or a contactless payment card/phone) to travel from Heathrow to Paddington, but only on the Elizabeth line. You simply tap in at the Heathrow station and tap out at Paddington. It is a much cheaper alternative to the Heathrow Express, which does not accept standard Oyster "pay-as-you-go" credit (though it does accept Contactless). It is important to note that the Elizabeth line offers a "TfL Rail" fare, which is significantly more expensive than a standard tube fare but much faster than the Piccadilly line. As of 2026, the Oyster card is still widely used, though many locals have switched to Contactless for the seamless "Daily Capping" benefits. If you take the Elizabeth line, the journey takes about 30 minutes. If you accidentally board the Heathrow Express with an Oyster card that doesn't have a specific pre-purchased ticket, you may be issued a "Penalty Fare" by the onboard inspector.